Product Questions

Results 1 - 281 of 281

  1. What are the different Goodyear Racing Tire compounds?

    Drag Tire Compound Data

    **Listed in order from softest to hardest.** D-2 - For Pro Mod. Slightly more starting line hook than D-2A. D-2A - For Pro Mod, Top Alcohol Dragster, Top Alcohol Funny Car, Pro Stock, and other high horsepower applications. D-2E - For Top Fuel, F...

  2. What are the different Mickey Thompson Tire compounds

    Mickey Thompson Drag Tire Compound Information

    Mickey Thompson tires are compounded by size and application. The compound can be found in the serial number on each tire. For example, In the serial number "CY1J M5 FJ087", M5 is the compound. The chart below lists the tire compound and a descrip...

  3. What are the different Hoosier Racing Tire compounds?

    ...

  4. What are the different M&H Racemaster Tire compounds?

    M&H Drag Tire Compound Data

    704 Compound: Drag racing slick, tube type. Not DOT-certified. Extreme traction material. Race cars of 3,500 pounds or less will find this compound very effective. Light or moderate burnout recommended. #8 Compound: Drag racing slick, tube type. No...

  5. Valve Spring Pressure - Hydraulic Roller

    Recommended Spring Pressure

    Roller cams have aggressive Lobe Profiles. This requires higher spring pressure to keep the valvetrain under control. The following table provides general guidelines for street/strip engines with a hydraulic roller camshaft. Engine Type ...

  6. Valve Spring Pressure - Solid Flat Tappet

    Recommended Spring Pressure

    Engines with solid cams are generally more performance-oriented. They will need higher spring pressures. The table below gives general guidelines for engines with a solid flat tappet camshaft. Seat Pressure Open Pressure 130 l...

  7. Upgrading the LQ4 and LQ9 Engines

    Getting more power out of my engine

    On a stock engine, the following upgrades can improve performance and fuel economy: A Cold Air Intake Kit Headers An Aftermarket Exhaust A Computer Programmer The LQ4 and LQ9 have very strong blocks. They can handle over 1,000 hp. using nitr...

  8. Chevy L83 and L8B Engine Specs

    The L83 and L8B are both Gen. 5, 5.3L, small block engines used in GM trucks and SUV's. They are known as the EcoTec3 5.3L engines. These engines are all-aluminum and use Active Fuel Management (AFM), Variable Valve Timing (VVT), and are Flex Fuel ...

  9. Ford Windsor Small Block Torque Specs

    Ford Windsor 289, 302, 351 Torque Specs.

    The following specs apply to the following Ford Windsor engines: 260 c.i.d. 289 c.i.d. 302 c.i.d. Fastener Type Torque Specs Main Cap Bolts 60-70 ft.-lbs. Connecting Rod Bolts 22-25 ft.-lbs. (40-45 ft.-lbs....

  10. Ford Cleveland and Modified Torque Specs

    Ford 351C, 351M, and 400M Torque Specs.

    The following specs apply to: Ford 351C Ford 351M Ford 400 Fastner Type Torque Spec Main Cap Bolts 95-105 ft.-lbs. Connecting Rod Bolts 40-45 ft.-lbs. (45-50 ft.-lbs. for Boss 351C) Cylinder Head B...

  11. Small Block Chevrolet Torque Specs

    Torque specs for Gen.1 SBC

    The following specs apply to: Gen. I, Small Block Chevy Fastener Type Torque Spec 7/16 in. Outer Main Cap Bolt 65 ft.-lbs. 7/16 in. Inner Main Cap Bolt 70 ft.-lbs. 3/8 in. Outer Main Cap Bolt 40 f...

  12. Big Block Chevy Torque Specs

    Gen 4 and 5 Chevrolet Big Block Torque Specs

    The following specs apply to: Gen IV, Big Block Chevy Mark V, Big Block Chevy Fastener Type Torque Specs Main Cap Bolt (396-427, 2-Bolt) 95 ft.-lbs. Main Cap Bolt (396-454, 4-Bolt, Inner and Outer) 110 ft.-l...

  13. Ford Big Block (385 Series) Torque Specs

    Ford 429 and 460 Big Block Torque Specs

    The following specs apply to: Ford Big Block, 385 Series,429 c.i.d.460 c.i.d. Fastener TypeTorque SpecsMain Cap Bolts95-105 ft.-lbs.Connecting Rod Bolts40-45 ft.-lbs.Cylinder Head Bolts140 ft.-lbs.Rocker Arms (Non-Adjustable)18-22 ft.-lbs.Intake Man...

  14. Chrysler 426 Hemi Torque Specs

    Gen 2 Hemi Torque Specs

    The following specs apply to: Chrysler 426 Hemi Fastener Type Torque Specs Main Cap Bolts 100 ft.-lbs. Main Cap Tie Bolts 45 ft.-lbs. 7/16 in. Connecting Rod Bolts 75 ft.-lbs. Cylinder He...

  15. Chrysler "Wedge" (B & RB Series) Torque Specs

    Mopar Big Block Engine Torque Specs

    The following specs apply to these Chrysler Big Block engines: B Series, 350 c.i.d. 361 c.i.d. 383 c.i.d. 400 c.i.d. RB Series, 383 c.i.d. 413 c.i.d. 426 Wedge 440 c.i.d. Fastner Type Torque Specs ...

  16. What is the AMC V8 Firing Order?

    AMC V8 firing order defined.

    Application Details Most AMC V8 engines Cylinder Numbering Front to back1, 3, 5, 7 on the driver side2, 4, 6, 8 on the passenger side Firing Order 1-8-4-3-6-5-7-2 Distributor Rotation Clockwise...

  17. What is the Buick V8 Firing Order?

    Buick V8 firing order defined.

    Application Details Most Buick V8's, except the Nail Head Cylinder Numbering Front to back1, 3, 5, 7 on the driver side2, 4, 6, 8 on the passenger side Firing Order 1-8-4-3-6-5-7-2 Distributor Rotation Clockwise...

  18. Chrysler Small Block Firing Order

    Mopar LA series firing order defined.

    Application Details Mopar Small Block LA Series Cylinder Numbering Front to back 1, 3, 5, 7 on the driver side 2, 4, 6, 8 on the passenger side Firing Order 1-8-4-3-6-5-7-2 Distributor Rotation Clockwise ...

  19. Supercharging Basics – Carburetion

    At full throttle, a blown engine can require 50% more air than an unblown engine. As a result, it needs a larger carburetor(s) in order to make maximum power and boost. However, if your blown engine is primarily driven on the street at moderate engi...

  20. Supercharging Basics – Ignition System

    Most late model OEM electronic ignition systems have the capability of working well with a supercharger. Guidelines Set the initial timing at 6 to 10 degrees BTDC. The distributor advance curve should be calibrated to give a total advance of 28 to ...

  21. Gen 3 Hemi Torque Specs

    Torque Specifications for Gen 3 Hemi Engines

    The torque specs are fairly similar between the Gen 3 Hemi engines. However, there are some differences. Please see the chart below for some of the critical torque specs for your engine.   Fastener Type5.7L5.7L Eagle6.1L6.4L6.2LMain Caps1M1220 ...

  22. Coyote 5.0L Torque Specs

    Torque Specifications for Ford Coyote Engines

    Torque specs for Coyote 5.0L engines are the same. There is no difference in spec from F150 to Mustang. Please see the chart below for some of the critical torque specs and tightening sequences for your engine   Fastener TypeFirst PassSecond Pa...

  23. Do I need new lifters when I change my camshaft?

    When to Replace or Reuse Lifters

    Flat Tappet Camshafts New Flat Tappet Lifters are ALWAYS required for flat tappet cams. Used flat tappet lifters will have a wear pattern on the face. This wear pattern will prevent the lifter from spinning appropriately. It will cause heavy wear ...

  24. When should I replace my stock harmonic balancer?

    Reasons to Upgrade

    Obviously, if your harmonic balancer is damaged, it should be replaced. But there are also other reasons to consider an upgrade. Stock harmonic balancers are designed to work best with a stock rotating assembly, spinning at relatively low RPM's. Wh...

  25. What is the difference between these power chips?

    Stage 1 vs. Stage 2

    Stage 1 chips are programmed to optimize fuel and spark curves on a stock vehicle using premium pump gas (91 octane or higher). This will make the engine more efficient and increase top-end power. It can also improve the vehicle's fuel economy. Sta...

  26. What is the difference between brake fluids?

    DOT 3 vs. DOT 4 vs. DOT 5 vs. DOT 5.1

    The braking system on any vehicle is a critical safety system. It becomes even more critical in race and performance applications. Bringing your car to a stop generates a lot of heat. The heavier the vehicle and the faster it is going, the more hea...

  27. What's the difference between a carb spacer and a divider plate?

    Carburetor Spacers vs. Divider Plates

    Spacers and plenum dividers provide an easy way to change the configuration of the intake tract and the relationship it has with the carburetor. Adding a plenum divider to an open plenum manifold will help keep the left-to-right fuel distribution b...

  28. Will these wheels clear my brakes?

    Caliper to Wheel Clearance

    Most aftermarket brake calipers require 15 in. diameter (or larger) wheels. If you click on "Instructions" under the "Overview" tab on the brake kit detail page, and open the PDF document, you will see installation instructions for that kit. Many ...

  29. What is a brake proportioning valve?

    Definition and Description

    A Brake Proportioning Valve is commonly found on vehicles with front disc and rear drum brakes. It is a safety valve that restricts flow to the rear brakes during a “panic stop.” This prevents the rear wheels from locking up before the front wheels....

  30. Are drag slicks directional?

    Directional Requirements by Manufacturer

    Some slicks are directional right out of the mold. Any tire with a rotation arrow should be mounted so it spins in that direction. All slicks are considered directional once they are used. Goodyear Racing Tires All Goodyear racing tires have an 8 ...

  31. If I use aftermarket parts, will it void the manufacturer's warranty?

    Upgrading Parts and Your Vehicle Warranty

    Using aftermarket parts may, or may not, void your vehicle's warranty. It depends on how the warranty is written, what parts were used, and the nature of the problem that caused the warranty claim. The Magnuson-Moss Warranty Act is a federal law me...

  32. What oil should I use for engine break-in?

    Recommendations

    When breaking in any new or rebuilt engine, we recommend a dedicated Break-In Engine Oil. These are all conventional (mineral-based) oils with higher levels of ZDDP. For instructions, follow the link below that applies to your engine: Break...

  33. Can I use gauges and sending units from different manufacturers?

    Selecting Electrical Gauges and Senders

    Mixing brands of electric gauges and senders is generally NOT recommended. However, the severity depends on the type of gauge/sender combination: Fuel Level, Fluid Pressure, or Fluid Temperature. Why? Gauges and senders work as a set. The se...

  34. How do I measure the resistance range of my fuel level sender?

    Instructions for Measuring Fuel Level Sender Resistance

    Fuel Level Gauges are designed to work with a specific sender. Each Fuel Level Sending Unit is designed with a specific resistive input range. To get the right gauge and/or sender, measure the resistance of your existing sender. Procedure On ...

  35. How much is the core charge?

    See the Core Charge Amount on Our Website

    If the part you are looking at has a core charge, the amount can be found in these locations: Click the "Core Charge" link (under the estimated ship date) in search results. On the part detail page, under the estimated ship date. On the "Cart" ...

  36. What length pushrods do I need?

    Measuring for New Pushrods

    Selecting the correct pushrod length is essential for maximizing the performance of your engine. Finding the correct length after making modifications to your valvetrain, cylinder heads, or machining your engine block can be tricky. Check out this s...

  37. What is the compression ratio?

    Definition and Description

    Compression Ratio (CR) tells you the relationship between minimum and maximum cylinder volume. The cylinder is largest when the piston is at BDC. It is smallest when the piston is at TDC. The ratio is expressed as: Max. Cylinder Vol. : Min. Cylinde...

  38. How do I measure for a new steering column?

    Instructions to Measure for a Steering Column

    Measuring for a new steering column is easy. By following the steps below, you can ensure you will get the correct length column to make your ride as comfortable and safe as possible. Before you start, the seat you will be using or a good facsimi...

  39. What is the difference between 304 and 409 stainless steel?

    Exhaust Materials - 304 vs. 409 Stainless Steel

    All stainless steel contains chromium and other elements. The added elements make the metal harder, stronger, and resist corrosion. The 2 main types of stainless steel used for exhaust parts are 304 and 409. The difference between the types of stain...

  40. How do I know which rear end is in my vehicle?

    Differential Identification Charts

    There are several ways to identify the axle under your vehicle. Having a visual reference is probably the easiest way. Please open the attached documents to see pictures of the cover gaskets, and differential covers for many popular rear ends. ...

  41. Do I have to use inner tubes?

    Overview of Tire Tubes

    Tire Tubes help retain air, enhance performance, and increase stability. However, in some cases, it is appropriate to run the tire without a tube. The decision to run with or without tubes should be based on safety and performance, NO...

  42. What does "FMVSS 126 Compliant" mean?

    Overview of Federal Motor Vehicle Safety Standard 126

    The Federal Motor Vehicle Safety Standard (FMVSS) 126 requires that model year 2009, and newer, passenger cars, multipurpose passenger vehicles, trucks, and buses, with a GVW rating of 10,000 lbs. or less, must be equipped with Electronic Stabi...

  43. Which starter do I need for a later Gen. 1 Chevy Small Block?

    Starter for Late-Build (1999-2002) SBC Engines

    Late build Chevy Small Block Gen 1 engines (1999-2002), that came in Medium and Heavy duty GM trucks and vans (rated over 8,500 GVW), may have had metric threaded holes for the starter, motor mounts and bellhousing. You may have sourced one of these...

  44. Why is my new Moog ball joint missing the dust boot?

    Moog Ball Joint Design Change

    In 2015, Moog changed the design of some of their ball joints. The new design used on select ball joints, including some pre-installed in their control arms, have an integral dust boot and no longer uses the conventional external boots. This change ...

  45. What is carburetor height?

    Definition, Description and Examples

    Carburetor Height is the distance from the base plate to the top of the carb, where the air cleaner sits. It does NOT include any base or air cleaner gasket thickness. Why does it matter? The main reason carburetor height is important is due to ...

  46. What's the best way to tighten stainless steel locking ties?

    The DEI Locking Tie Tool

    The best way to get a professional looking result when using Locking Ties is to use a tool specially designed for this purpose such as the Design Engineering Locking Tie Tool, which attaches to any 1/4" drive. This tool will save you the time ...

  47. How do I tell if my 2004 Ford F150 is a Heritage Edition?

    The 2004 F150 vs. The 2004 F150 Heritage Edition

    In 2004, Ford introduced a new F150 body style. However, they still had 2003 models to be sold. So, they badged the older models as the 2004 F150 Heritage. This can be confusing for owners of either model when shopping for parts and accessories. Mo...

  48. What is a "spline style" lug nut for?

    Recommended Uses

    Many of today's modern wheel designs recess the lug nuts, meaning they are below the face of the wheel. With these wheels, a factory lug wrench or socket may not fit. Sometimes a thin wall socket will allow a conventional chrome lug nut to be u...

  49. Do I need a thin or thick oil pan gasket?

    Explanation and Recommendations

    Over it's lifetime, the SBC used 2 different Oil Pan Gaskets. The difference between them is the thickness of the gasket in the area that meets the timing cover: A "thin seal" is about 1/4 in. thick. A "thick seal" is about 3/8 in. thick. ...

  50. What size wheels do I need?

    Overview of Wheel Specifications

    Wheel sizes are generally defined as Diameter by Width. For example, a 17 x 8 wheel has a 17 inch diameter and an 8 inch width. However, you will need to know more than that before you Order New Wheels. Keep reading for more about the basics of whee...

  51. What is wheel backspacing?

    Definition and Description

    Backspacing is the distance from the innermost surface of the rim to the hub mounting surface. It is important because it can contribute to clearance issues with the suspension and body. How is it measured? Backspacing is measured in inches. ...

  52. Do wheels have measurements stamped on them?

    A Basic Guide to Wheel Markings

    Many Wheels have measurement information marked on them. If you can find and understand the markings, you won't have to measure them yourself. How to Find the Markings Wheel markings can be found on the backside of the hub or spokes. Sometimes the...

  53. Wheel Bolt Pattern Conversion Chart

    Standard and Metric Equivalents

    It can be difficult to know if your wheel's bolt pattern is metric or standard. If you get an odd measurement in inches, the wheel may have a metric pattern. The same is true if you are measuring in millimeters. The charts below show common bolt pa...

  54. What is an ET style lug nut?

    "ET" = Extra Threads

    If you're planning on putting new Aluminum Wheels under an older vehicle, especially from the early 70's or older, wheel stud length can be an issue. These older cars usually have shorter studs because they only came with thin steel wheels. For saf...

  55. Which lug nuts should I buy?

    Lug Nut Selection

    Choosing the right Lug Nuts for your vehicles requires you to know 3 things. (Follow the links below to learn more about each one.) The Bolt Pattern, The Stud Size, and The Seat Type. ...

  56. What does "hub centric" mean?

    Hub Centric vs. Lug Centric Wheels

    Hub Centric Hub centric wheels are centered on the axle by the center bore of the wheel being just large enough to fit over the hub pilot diameter. Most factory steel wheels are made to fit the hub pilot diameter of its intended vehicle. T...

  57. Do I need hub centric rings for my new wheels?

    Overview of Hub Centric Rings

    What are they? Hub Centric Rings fit in the center bore of the wheel and over the hub pilot on the axle. They fill the gap between the two surfaces. The rings can be made from metal or plastic. How do they affect performance? Hub centric rings ...

  58. Wheel Materials & Construction

    Steel vs. Aluminum, Forged, Billet and Multi-Piece Wheels

    Most wheels are made of either steel or aluminum. Depending on the material, the wheel could be made in different ways. The material and construction method will affect the wheel's design, strength, and cost. Aluminum Wheels Aluminum wheels are ...

  59. What's the difference between a wheel spacer and a wheel adapter?

    Wheel Spacers vs. Wheel Adapters

    Wheel Spacers Wheel spacers go between the mounting surfaces of the wheel hub and the axle, and maintain the bolt pattern of the vehicle. Wheel Spacers can be used to widen the stance of the vehicle and / or give additional clearance on the in...

  60. Will these wheels and tires fit my vehicle?

    Wheel and Tire Fitment Guide

    Determining if a new set of wheels and tires will fit on your vehicle can be a complex problem. It is impossible to know every potential combination of vehicle, wheels, tires, brake components, suspension components, etc... and what will work for ev...

  61. Is backspacing related to wheel offset?

    Backspacing to Offset Conversion Chart

    Use this chart as a quick reference to find your offset based on the wheel width and backspacing. Back- spacing 3.25 in. 3.5 in. 3.75 in. 4.0 in. 4.25 in. 4.5 in. 5.0 in. 5.25 in. 5.5 in. 5.75 in. ...

  62. What are Uni-Lug wheels?

    Wheels with Multiple Bolt Patterns

    Uni-Lug wheels are a type of wheel that can fit more than one bolt pattern. Other types of wheels that fit more than one bolt pattern are called "Dual Pattern" or "Multi-Lug" wheels. Uni-Lug Wheels The most common Uni-Lug wheel is the classic Crag...

  63. Tire Load Index

    Definition and Description

    The load index on a tire indicates how much weight each tire can safely support. To determine what load rating your vehicle requires: Check your owners manual, orTake the total weight of the fully loaded vehicle (full tank of gas, luggage, all the k...

  64. Tire Speed Rating

    Definition and Description

    Tire speed ratings have been developed to indicate the maxium speed at which a tire can safely be driven. **This DOES NOT mean it is safe to drive your vehicle at this speed. It only means that the tire can be driven up to this speed without failin...

  65. How do I know how old my tires are?

    Determine Tire Age by Serial Number

    The tire serial number is the best way to determine how old a tire is. The serial number is sometimes called a DOT Code. The end of the serial number has a 4-digit number. This is the date of manufacture. The first 2 digits are the week. ...

  66. Tire Treadwear Rating

    Definition and Description

    The Treadwear Rating is an estimate of how long the tread will last. It is determined by the performance of the tire in a government test, under controlled conditions. Test Procedure Measure the tread depth of the new tire to establish a baselin...

  67. How is tire width measured?

    Definition and Description

    There are 3 common width measurements when talking about tires. Section Width Section width is the measurement from sidewall to sidewall, at its widest point. It is generally expressed in millimeters. Any raised lettering or protective r...

  68. How do I get bigger wheels on my stock vehicle?

    Plus Sizing Wheels and Tires

    Plus sizing is a method of adding larger wheels to a vehicle while keeping the tire diameter as close to stock as possible. Maintaining the tire diameter ensures that the speedometer, traction control, ABS, and other systems function properly. ...

  69. What's the difference between radial and bias ply tires?

    Tire Construction Methods Explained

    The terms "Radial" and "Bias Ply" are used to describe the internal construction of a tire. The difference between them may seem small, but it has a significant impact on the way the tire performs. Tires are not just big rubber donuts. They are act...

  70. Why should I choose bias ply tires?

    Benefits, Risks, and Uses for Bias Ply Tires

    Pros of Bias Ply Tires The entire body of the tire flexes easily, making for a smooth ride on rough surfaces Less expensive Good traction at slow speeds and while traveling in a straight line Thicker sidewall is more resistant to cuts and punc...

  71. Why should I choose radial tires?

    Benefits, Risks, and Uses for Radial Tires

    Pros of Radial Tires Longer tread life Better steering control Tread stays in contact with the road while cornering and under a load Lower rolling resistance Better fuel economy Tire will "skim" over cracks and ruts in the ...

  72. How much will shipping cost?

    Get Your Own Shipping Handling Quote on Our Website

    Shipping rates are determined by the package size, weight, and destination. The best way to get an estimate or actual shipping costs is on our website. Follow the instructions below to find your shipping cost or click the link at the bottom to see a...

  73. How Many Rim Screws Do I Need?

    Rim Screws and Your ET

    Before actually drilling any holes, you need to determine how many Rim Screws you need on each side of the wheel. Check the chart below for some basic guidelines. 1/4 Mile ET # of Screws per side of the Rim ...

  74. What is a tire compound and why does it matter?

    Drag Racing Tire Compounds

    The rubber used to make tires has many ingredients. Just like baking a cake, adding different amounts of the various ingredients will change the flavor and consistency of the finished product. Tire manufacturers use their own recipes to make tires i...

  75. What tire compound is best for my car?

    Racing Tire Compound Selection

    Racing Tires have softer compounds than street tires. So, softer is better, right? Well, no, not always. Generally, lighter vehicles should run softer compounds. Heavy vehicles should run harder compounds. Why? A lightweight car with a hard ...

  76. Which TPMS sensors should I buy?

    TPMS Sensor Selection

    The Tire Pressure Monitoring System on your vehicle is an imortant safety feature. It is also Required By Law on all newer vehicles. Getting the right sensors will ensure the system operates as intended. Follow these guidelines when looking for new ...

  77. What is the difference between a flat tappet and a roller camshaft?

    Flat Tappet vs. Roller Camshafts

    Camshafts are classified by the type of lifter they use. The lobes on the cam are machined differently based on the intended lifter. Lifters are sometimes called a "follower" or "tappet." They contact the cam lobe with either a flat surface or a whe...

  78. What camshaft should I buy?

    Basic Overview of Camshaft Specs

    The Camshaft is known as the "brain of the engine." It controls the operation of the intake and exhaust valves. Choosing a camshaft has a direct impact on Torque, Horsepower, idle quality, and more. Understanding camshaft specifications can help...

  79. How do I choose a carburetor?

    A Basic Overview of Carburetors

    A Carburetor is a mechanical device for mixing air and fuel. Each barrel is an air tube with a narrow section in the middle. As air flows through the narrow section (called a venturi) it speeds up. As the air velocity increases, air pressure drop...

  80. What is a carburetor choke?

    Definition and Description

    When an engine is cold, it requires a richer Air/Fuel Mixture to get started. A choke is used to create that condition. The choke is a plate or blade that covers the primary barrels. It restricts airflow through the carburetor. This means that there...

  81. Carburetor Secondary Types

    Vacuum vs. Mechanical vs. Air Valve Secondaries

    A 4-barrel carburetor has 2 primary and 2 secondary venturies (barrels). At idle and low rpm driving, only the primary barrels open. The throttle blades on the secondary barrels stay closed. As rpm increases, the engine requires more air and fuel. ...

  82. Carburetor Mounting Flange

    4-Barrel Mounting Flange Designs

    The carburetor flange shape, size, and bolt pattern need to match the intake manifold. If not, they won't bolt up without an adapter. There are three main 4-barrel flange styles. Spread Bore OEM style carbs usually have a spread bore design. Sprea...

  83. What size fuel return line do need?

    Fuel Return Line Size and Installation

    When using a Return Style Fuel Pressure Regulator, it must be able to return 100% of the fuel back to the tank. The Fuel Return Line should be at least the same size, or one size larger than the supply. Make sure there are no sharp bends or kinks. ...

  84. Can I reuse my stock valve springs?

    Replace or Reuse Valve Springs

    In some cases, stock springs can be reused, as long as they are in good shape. Valve springs do wear out. If you are rebuilding the engine, it is a good idea to replace the valve springs. When swapping a cam, the most important thing to avoid ...

  85. Which header gasket should I buy?

    Overview of Header Gaskets

    An exhaust leak will affect the flow of gases through the system. This will reduce The Scavenging Effect created by the headers. A quality gasket will keep the exhaust system sealed. There are many different types of Exhaust Gaskets avail...

  86. Valve Spring Pressure

    Definition and Description

    Valve springs have 2 important pressure specs, seat pressure and open pressure. When buying valve springs, it is important to understand them both. Seat Pressure – The force holding the valves closed at zero lift. Open Pressure – The force pushi...

  87. Valve Spring Styles

    A Basic Overview

    Valve springs are available in a few different styles. Each type of spring is designed to handle the following issues in different ways: Valve Lift Valve Float Coil Bind Single Springs Single springs are most commonly found on street cars an...

  88. Which steering shaft should I buy?

    Steering Shaft Selection

    When replacing a Steering Shaft, you have to get the right one. If you use the wrong parts in a steering system, dangerous conditions can occur. A steering system failure can cause serious damage and possible injury. Many steering shafts are vehicl...

  89. What is Carburetor CFM Rating?

    Definition and Description

    Carburetors are sized by how much air they can flow. This is expressed in cubic feet per minute (cfm). It is important to understand that cfm has nothing to do with fuel. The fuel delivery circuits in the carb can be tuned to meet the engine's need...

  90. Valve Spring Height

    Definition and Description

    Spring height is the distance between the spring seat and the retainer. There are 3 important heights to consider when buying valve springs: Installed Height - The height of the spring when the valve is closed (zero lift). Open Height - The heig...

  91. What is valve spring rate?

    Definition and Description

    Spring rate is the force required to compress a spring a specific distance. It is expressed in pounds per inch (lbs./in.). Many people refer to spring rate as “stiffness”. A “stiff” spring will have a higher spring rate. How is it calculated? Spr...

  92. What type of metal should I choose for my exhaust parts?

    Overview of Exhaust Materials

    The exhaust system handles a lot of heat. It is also exposed to the elements. The exhaust system must be strong and durable. Exhaust tubing snakes from the engine to the rear bumper. It has to be routed around other parts. The exhaust system must b...

  93. Valve Spring Diameter

    Definition and Description

    There are 2 important diameters to know when selecting valve springs: The Inner Diameter (I.D.) of the inner most spring, and The Outer Diameter (O.D.) of the outer most spring. How is it measured? Spring diameters are listed in thousandths...

  94. Exhaust Material - Mild Steel

    What is it? Mild steel is a mixture of iron and carbon. It is sometimes called carbon steel. Compared to other metals, it is strong and durable. How is it identified? Mild steel will look dull and gray. You can also check it with a magnet. The ma...

  95. Exhaust Material - Aluminized Steel

    Aluminized steel is mild steel that has been coated with an aluminum-silicon alloy. The silicon helps the aluminum stick to the steel. The aluminum then resists corrosion. How is it identified? Aluminized steel will be light gray. It may even...

  96. What length shocks do I need?

    Measuring for "Universal" Shocks

    When changing the ride height of a vehicle, you will usually need new shocks. It is important to get shocks that will not bottom out or fully extend. This will limit your suspension travel and damage the shock. If you use a suspension kit, the manu...

  97. How do I get the right parts for my C-4 transmission?

    Selecting Parts for a C-4 Transmission

    The C-4 is a medium-duty, 3-speed, automatic transmission. It was used in Ford, Lincoln, and Mercury cars and trucks from 1964 into the early 1980’s. It was also used with 4, 6, and 8 cylinder engines. Over its lifetime, the C-4 went through a few ...

  98. Do I need a narrow crank bearing?

    The Fillet Radius and Narrow Bearings

    A narrow bearing is required when using a crankshaft with a large fillet radius. On a crankshaft, The area where the bearing rides is called the Journal. The surface of the counterweight is called the Cheek. The Fillet Radius is the area where...

  99. What valve springs should I buy?

    Overview of Valve Spring Specifications

    Valve Springs are one of the most important parts of an engine. They control the valvetrain. The spring makes sure the valve opens and closes smoothly. It also keeps the lifter in contact with the camshaft. Despite their importance, they are ...

  100. Which electric fan should I get?

    Electric Cooling Fan Selection

    An Electric Fan can help keep your engine temperature in a safe operating range. It is not only recommended for high-horsepower and boosted engines. In many cases, it is required. How do I choose? In the aftermarket, there are a ton of options. ...

  101. How do I choose a set of headers?

    Overview of Headers

    Exhaust Headers are one of the best performance upgrades that you can make. They improve Torque, Horsepower, and fuel economy. Stock, cast iron manifolds are heavy and rust quickly. They also force exhaust gases into a single chamber. This c...

  102. Header Styles

    A Basic Overview

    Full-Length Headers Full-Length Headers will provide the most Torque at low and mid-range rpm and the most Horsepower up top. They curve down and back past the bellhousing and parallel to the ground. This makes it easy to connect to ...

  103. Will these headers fit my vehicle?

    Header Fitment Guide

    Exhaust Headers are designed to fit a specific combination of engine and vehicle. Just because a set of headers fit a similar vehicle with the same engine, doesn't mean it will fit your car. The Header Flange must match the cylinder hea...

  104. What size headers should I buy?

    Recommended Header Primary Tube Diameter

    For most street/strip cars, operating mostly at or below 6,000 rpm, we recommend the following Header sizes: Horsepower Output Primary Diameter 200-325 hp. 1 1/2 in. 275-425 hp. 1 5/8 in. 400-500 hp. ...

  105. What finish should I choose for my new headers?

    An Overview of Header Finishes

    The finish on your headers will determine how they look and how long they last. It will also affect the way they perform. There are several options available. Understanding the benefits and weaknesses of each one will help you make the right decisi...

  106. Header Finish - Ceramic Coated

    Definition and Description

    The primary function of ceramic coating is to act as a thermal barrier. As a bonus, it also resists corrosion better than other coatings. It is also available in several colors. How is it applied? The headers are thoroughly cleaned to remove dir...

  107. Header Finish - Painted

    Definition and Description

    Painted Headers are the most popular finish option. They are affordable and provide decent rust resistance. The biggest mistake made with painted headers is to assume the paint is finished. Most painted headers come with a temporary shipping paint....

  108. Should I wrap my headers?

    An Overview of Header Wrap

    Header wrapping involves wrapping an insulating cloth around the primary tubes and collector. Header wrap is more expensive than high temp paint. But, it is less expensive than ceramic coating. It can also be done in your garage! You can't buy wr...

  109. The Header Collector

    4-1 vs. Tri-Y Headers

    The collector is where the primary tubes merge together. "4-1" and "Tri-Y" are the 2 main types of collector design. The 4-1 design brings all 4 primary tubes into one collector at the same point. The Tri-Y design (or 4-2-1) merges the 4 primary...

  110. The Header Flange

    Definition and Description

    The header flange holds the primary tubes to the exhaust ports on the cylinder head. What is important about it? There are several things to consider when looking at the header flange: Flange thickness, Bolt pattern, and Exhaust port size, ...

  111. What size injectors do I need?

    Flow Rate Definition, Calculating and Horsepower Range

    Fuel Injectors are sized by their flow rate. Flow rate is a measurement of how much fuel can be delivered over time. It is listed in pounds per hour (lbs./hr.) or cubic centimeters per minute (cc/min.). The right size injector can supply enough fue...

  112. What is an NPT fitting?

    Plumbing Basics and NPT Fittings

    NPT stands for National Pipe Taper. NPT fittings are used in many different applications, such as: Fuel Systems Pumps Regulators Filters Aftermarket Brake Calipers Oil & Coolant Passages in Intake Manifolds Cylinder Heads ...

  113. Exhaust Parts Sizing

    I.D. / O.D. How they fit together.

    Most exhaust parts are made so they mate up easily. Usually, one piece will slip inside the other. This creates what is called a “lap joint.” In this case, the joint can be clamped or welded to seal it up. Some parts will list the Inside Diameter...

  114. What is an AGM battery?

    Definition and Description

    An Absorbed Glass Mat (AGM) Battery is made of thick plates with electrolyte in specially designed fiberglass mats in between the plates. They may also be known as: Sealed regulated valve Dry cell Non-spillable Valve-regulated lead acid batter...

  115. What speedo gears should I buy?

    Speedometer Gear Selection

    Older vehicles use mechanical speedometers. They have 2 gears that work together to measure vehicle speed. These “Speedo Gears” are usually located in the transmission. The Drive Gear is located on the output shaft. The Driven Gear is located in...

  116. What’s the difference between internal and external engine balance?

    Engine Balance: Internal vs. External

    An engine must be balanced to ensure smooth operation. It minimizes vibration and maximizes engine life. Balancing can be internal, external, or a combination of both. Balancing an engine means offsetting the weight of the pistons and rods. This in...

  117. What size fuel line do I need?

    Recommended Size, Based on Horsepower

    Fuel pumps are sized to feed your system with enough fuel to optimize engine performance. However, when using an External Fuel Pump, you can starve it for fuel if the line is too small. A lot of aftermarket pumps will list the required line sizes. ...

  118. How do I delete the AFM on my LS engine?

    AFM Disabler vs. AFM Delete

    This article applies to any Gen. 4, Chevy LS engine with the Active Fuel Management (AFM) System. You have 2 options that will keep the engine in 8 cylinder mode. Option 1 Install an AFM Disabler. An AFM Disabler is an electronic device that ...

  119. How do I delete the VVT on my LS engine?

    LS Engine VVT Delete Kits

    This article applies to any Gen. 4, Chevy LS engine with the Variable Valve Timing (VVT) System. A VVT Delete Kit removes the VVT components and replaces them with standard parts. At a minimum, they include: A Gen. 4, non-VVT timing cover, A ne...

  120. What is a camshaft phaser limiter? (LS Engines Only)

    Using a Camshaft Phaser Limiter on an LS Engine

    **The following ONLY applies when installing a COMP Cams camshaft with Variable Valve Timing (VVT) into a Gen. 4 Chevy LS engine with a VVT System.** What is it? A camshaft phaser limiter is a device that restricts the movement of the VVT actuator...

  121. Which distributor gear should I buy?

    Distributor Gear Selection

    Getting the right material is the most important part of choosing a distributor gear. The gear should be slightly softer than the camshaft. This will ensure accurate ignition timing and a long engine life. If the gear is too soft, it will quickly w...

  122. Can I use an older GM automatic transmission with an LS engine?

    Mating a GM Automatic Transmission to an LS Engine

    Application Details Any Chevy LS engine, EXCEPT the LS4 and some early LQ4 and LR4 engines. The LS4 was used in FWD cars and uses a metric, 60 degree, Chevrolet V6 bellhousing. For details about the LQ4 and LR4 engines, see Mating ...

  123. I have an early LS engine with a long crank. What do I need to bolt-up my old GM automatic?

    Mating a GM Automatic Transmission to an Early LQ4 or LR4

    Application Details Engines 1999-2000 Chevy LQ4, 6.0L engine (VIN Code U), originally mounted to a 4L80E transmission 1999-2000 Chevy LR4, 4.8L engine (VIN Code V), originally mounted to a manual transmission Transmissions Po...

  124. TCI Converter Stall Speed Ranges

    Torque Converter Stall Chart

    The following chart shows the expected stall range for TCI Torque Converters. This chart is ONLY a guideline. Your actual stall speed may vary. TCI Torque Converter Series Adv. Camshaft Duration Rear Gear Ratio Engine Characterist...

  125. Wheel Diameter

    Definition and Description

    The wheel diameter is measured from the surface where the tire bead is mounted. **It is NOT the overall diameter of the rim.** The wheel diameter is important because it can cause interference issues. If the diameter is too small, it may not fit ov...

  126. Wheel Width

    Definition and Description

    The wheel width is measured from the inner surface of the lip, where the tire bead is mounted. **It is NOT the overall width of the wheel.** The wheel width is used to determine what size tire will fit on it. Wider tires will require a wider rim. ...

  127. Wheel Bolt Pattern

    Definition and Description

    The bolt pattern of a wheel is the layout of the mounting holes. A wheel's bolt pattern can also be called its "Bolt Circle" or "Pitch Circle Diameter (PCD)". Bolt pattern is expressed as the number of lugs by the diameter of the imaginary circle f...

  128. Wheel Offset

    Definition and Description

    Offset is the distance between the centerline of the Wheel and the hub mounting surface. Offset is measured in millimeters (mm). It tells you where the wheel is positioned in the wheel well. The amount of offset will vary, depending on the wheel de...

  129. These 2 parts seem the same. What's the difference?

    Compare the Parts Side-by-Side

    Our "Compare" feature allows you to view the differences between parts. The features are lined up and differences are highlighted in blue. How do I use it? Add items to the "Compare" list. Search for the item you're looking for. From the s...

  130. Is this part in stock?

    Stocking Status Explained

    The status of the products on our website can be listed in several ways. Each one is explained below. In Stock "In stock" means we currently have the product on our shelves. It will be delivered to you by the method you choose during the checkou...

  131. How do I get a copy of the instructions?

    View or Download Instructions Sheets

    When instructions are available online, you can find them on the part detail page. How do I do it? Find the part you want. Scroll down the page and click the "Instructions" Icon. Clicking on "Instructions & Calculators" on the far...

  132. Head Gasket Compressed Thickness

    Definition and Description

    Head gasket thickness is the distance between the engine block and the cylinder head, when the head is properly installed and torqued. The compressed thickness is what matters. The compressed thickness is built-in by the gasket maker. It is based o...

  133. Engine Displacement

    Definition and Description

    Displacement is the size of the engine. It is the total Swept Volume of all its cylinders. It tells you how much air can be pumped through the engine. Engine displacement can be listed in cubic inches (c.i.d.), cubic centimeters (cc), or liter...

  134. What are the Four Strokes of an Engine?

    A Basic Overview

    A single stroke in an engine refers to the piston traveling the full sweep of the cylinder. There are 4 strokes in an engine's cycle. They are Intake, Compression, Power, and Exhaust. One cycle is actually 2 complete rotations of the crankshaft. ...

  135. Engine Horsepower

    Definition and Description

    Horsepower (hp) is a unit of measurement that expresses the rate at which work is done. 1 hp represents the amount of power it takes to perform 33,000 ft.-lbs. of work in 1 minute. Imagine a horse pulling coal out of a mine. A horse exer...

  136. Deck Height

    Definition and Description

    Engine block deck height is the distance from the centerline of the main bearing bore to the flat surface of the block where the heads bolt on. How is it measured? The easiest and most accurate method is to have it measured by a machine shop. To ...

  137. What is Piston Compression Height?

    Definition and Description

    Compression height is the distance from the center of the wrist pin to the crown of the piston. It is listed in inches and provided by the piston manufacturer. When building a performance engine, the piston is usually chosen for its Head Sty...

  138. Why am I being charged GST?

    Australian Goods and Services Tax Statement

    For our Australian customers, we collect and remit Goods & Services Tax (GST) based on legal requirements established by Australia. Please follow this link for more information on Australian GST....

  139. What's a "Universal" part?

    Definition and Description

    The term “universal” is used when a part is not vehicle-specific. This means it was not designed to fit one or a select few vehicles. Universal does NOT mean the part will fit any vehicle. In most cases, one or more of the following will be require...

  140. Do you offer any discounts?

    Saving Cash with Summit Racing

    You will always save the most when you order from us. We have great deals and several great ways to save: Current Promotions Any current promos or discount codes will be advertised on our Home Page. Subscribe to Our Newsletter and Updates Be the...

  141. Which battery should I buy?

    Basic Overview of Automotive Batteries

    The Battery is the heart of your vehicle’s electrical systems. It provides the current that starts the engine, powers the electronics, and fires the ignition system. Just like anything else, choosing the right battery for your application will en...

  142. What's the difference between a starting battery and a deep cycle battery?

    Battery Usage - Starting vs. Deep Cycle

    Starting Batteries Starting Batteries are often used for daily drivers. They deliver one large burst of power to start a normal engine. This discharges about 1-3% of its power. Once the engine has started, the alternator maintains power and recharg...

  143. What is a wet cell battery?

    Definition and Description

    A Wet Cell (or "flooded cell") Battery is a standard, traditional type of battery. It contains liquid electrolyte that may require maintenance. There are two styles of wet cell batteries. Serviceable wet cells have removable caps that allow electrol...

  144. What is a gel cell battery?

    Definition and Description

    A Gel Cell Battery contains electrolyte with a silica additive. This causes it to stiffen or set up, like a gel. What are the benefits? The silica gel suspends the electrolyte in a paste. This prevents spilling if the battery is not upright. What...

  145. What is a BCI number?

    BCI Group Number Table

    The Battery Council International (BCI) has developed group numbers that categorize batteries by size. Each number refers to the physical dimensions of the case. It also tells you the type and location of the terminals. BCI Application ...

  146. Battery Reserve Capacity

    Definition and Description

    Reserve capacity is the time (in minutes) that a fully charged battery will deliver 25 amps at 80ºF and maintain a terminal voltage of 1.75+ volts per cell. How is it measured? Manufacturers test batteries to determine their reserve capacity. This...

  147. What spark plugs should I buy?

    Basic Overview of Automotive Spark Plugs

    For most applications, we recommend the same Spark Plugs as the manufacturer. Slightly different plugs will not increase performance much... if at all. Significantly different plugs could do more harm than good. A spark plug has 3 main jobs: Ign...

  148. Spark Plug Seat Type

    Definition and Description

    The spark plug's seat seals the combustion chamber. It can be flat with a gasket or tapered. The cylinder head determines which type is required. The seat types CANNOT be interchanged. The wrong seat will not seal the chamber and cause compres...

  149. Spark Plug Thread Size

    Definition and Description

    The thread size for Spark Plugs refers to the size of the threads that screw into the cylinder head. The first number is the diameter. The second number is the thread pitch. Some common thread sizes are: M18 x 1.5 M14 x 1.25 M12 x 1.25 M10 x ...

  150. Spark Plug Reach

    Definition and Description

    The reach is the distance between the end of the threads and the seat of the spark plug. It does not include the electrodes or any extended metal shell. How is it measured? The reach can be measured using a set of Calipers. How does it affect p...

  151. Spark Plug Heat Range

    Definition and Description

    Spark Plugs help remove heat from the combustion chamber. The listed heat range represents the plug's ability to dissipate heat. If the plug is too hot, it can result in Pre-Ignition. If it's too cold, it can result in fouling and misfires. How is i...

  152. Spark Plug Insulator Type

    Definition and Description

    The insulator type refers to the spark plug's firing tip. It is the amount the central electrode and ceramic insulator protrude from the threaded shell. What types are there? Insulator Type Description Benefits Non-Projec...

  153. Which ignition coil should I buy?

    Basic Overview of Ignition Coils

    The Ignition Coil is an electrical transformer. It converts low battery voltage into the high voltage needed to create a spark. Follow this link to learn more about How the Ignition Coil Works. Most ignition coils are sold by application. Thi...

  154. Ignition Coil Style - Single Coil

    Definition and Description

    A single coil is 1 coil that provides the voltage for all the spark plugs (cylinders). It can be externally placed or located inside the distributor cap. When is it used? Single coils are used in most ignition systems with a distributor. Single C...

  155. Ignition Coil Style - Coil-on-Plug

    Definition & Description

    Coil-on-plug refers to individual ignition coils for each spark plug. They can be located on, over, or near the plug. When are they used? The coil-on-plug design is used in all modern Direct Ignition Systems. How does it affect performance? Ea...

  156. Ignition Coil Style - Coil Packs

    Definition & Description

    A coil pack is a coil that fires 2 spark plugs (cylinders) at the same time. Engines with coil packs will use multiple coils, instead of just 1. A common configuration would be: 4 cylinders - 2 coils 6 cylinders - 3 coils 8 cylinders - 4 coils ...

  157. Ignition Coil Primary Resistance

    Definition & Description

    Primary resistance is the measure of how hard it is for current to flow through the primary windings. It is expressed in ohms (Ω). How is it measured? Resistance can be measured with a Multimeter. Set the multimeter to measure resistance (ohms)...

  158. Do I need a stud girdle?

    Definition & Description

    A Rocker Arm Stud Girdle (aka valvetrain stabilizer) is a bar that links all the studs together. It clamps over the polylocks on Stud Mount Rocker Arms. What do they do? A stud girdle distributes the load across all the studs. This adds strength...

  159. What are shaft mount rockers?

    Definition & Description

    Shaft Mount Rocker Arms ride on a shaft that is bolted to the cylinder head. In most cases, there is a single shaft with all the rockers on it. However, some designs use multiple shafts with only 2 rockers on each. What engines use them? Shaft m...

  160. Which distributor should I buy?

    Basic Overview of Distributors

    All Distributors send electricity to the right spark plug, at the right time. Many also trigger the Ignition Coil to fire. Understanding how they work (and the available options) will help you choose the right one. Spark Distribution All distrib...

  161. What type of connector do I need for my spark plug wires?

    Distributor Cap Style & Spark Plug Wire Connectors

    Distributor Caps come in two basic styles. The difference between them is the shape of the terminals that connect to the spark plug wires. Male/HEI A Male/HEI Distributor Cap has terminals like the end of a spark plug. They require spark plug wi...

  162. What is a computer-controlled compatible distributor?

    Definition & Description

    Like all distributors, Computer-Controlled Compatible Distributors send spark to the right plug at the right time. However, an external computer (or ECU) controls timing and the coil. These distributors were used on some factory engines. They ...

  163. Distributor Trigger Style - Magnetic

    Definition & Description

    The trigger style is the way the distributor signals the Ignition Coil to fire. A magnetic pickup is one style. Magnetic Trigger Distributors are an upgrade over points distributors. They use the following parts: A magnetic pickup (wire wound ar...

  164. What is a mechanical advance?

    Definition & Description

    The mechanical (or centrifugal) advance is an Ignition Timing control mechanism built into most distributors. It is made up of: Two weights, An advance plate or cam attached to the trigger mechanism inside the distributor, and Springs that cont...

  165. Distributor Trigger Style - Optical

    Definition & Description

    The trigger style is the way the distributor signals the Ignition Coil to fire. An optical trigger is one style. (The Mallory Unilite is a common example.) Optical Trigger Distributors are an upgrade over points distributors. They use the following...

  166. Distributor Trigger Style - Points

    Definition & Description

    The trigger style is the way the distributor signals the Ignition Coil to fire. Points is one trigger style. Points Distributors were used in almost all automotive applications up until the mid-1970's. They use the following parts: Spring loaded...

  167. What is a vacuum advance?

    Definition & Description

    The vacuum advance is an Ignition Timing control mechanism built into some distributors. It is made up of: A vacuum canister, A linkage, and An advance plate attached to the trigger mechanism inside the distributor. How does it work? As En...

  168. What is a brake combination valve?

    Definition & Description

    A Brake Combination Valve is exactly what it sounds like. It is a single unit that performs multiple functions. Its job is to achieve Balanced Braking. Combination valves are often just called “proportioning valves.” However, in reality, they do mo...

  169. What is a brake metering valve?

    Definition & Description

    A brake metering valve is used to Balance the Braking Forces. It is only found on vehicles with front disc and rear drum brakes. The metering valve holds back fluid to the front brakes until enough pressure is created to overcome the return springs ...

  170. What is rocker arm ratio?

    Definition & Description

    The rocker arm ratio is the relationship between the 2 halves of the rocker arm. The halves are: The center of the valve stem to the center of the pivot point. (Dimension “Y” in the diagram.) The center of the pushrod to the center of the pivot ...

  171. What is a TTY bolt?

    Overview of Torque to Yield (TTY) Fasteners

    Torque to Yield (TTY) fasteners are used in many modern engines. When torqued properly, they provide better clamping force than standard fasteners. All TTY bolts are 1-time use only. However, some rod bolts and main cap bolts can be tightened up to...

  172. Do I need aluminum heads?

    Cast Iron vs. Aluminum Cylinder Heads

    Most Cylinder Heads are cast iron or aluminum. The right material for you depends on the answers to these questions: What are you using them on? What other parts are you going to use with them? What’s your budget? The sections below explain...

  173. What is Intake Runner Volume?

    Definition and Description

    Intake runner volume is a popular way to compare cylinder heads. It tells you the size of the passage leading to the intake valve. It is expressed in cubic centimeters (cc). How is it measured? For aftermarket heads, the easiest way to find the in...

  174. Exhaust Runner Volume

    Definition & Description

    Exhaust runner volume tells you the size of the passage from the exhaust valve to the manifold mating flange. It is expressed in cubic centimeters (cc). How is it measured? For aftermarket heads, the easiest way to find the runner size is to look ...

  175. Do I need tall valve covers?

    Valve Cover Height Explained

    Valve Covers come in a wide variety of designs to give your engine the look you want. One important thing you will need to determine is your valve cover height. Valve covers are available in “stock” or “tall” height. What’s the difference? Tall va...

  176. What does the PCV valve do?

    Definition & Description

    A PCV Valve regulates positive crankcase ventilation. It is an important part of your Crankcase Ventilation System. What does it do? The PCV valve serves a few purposes: It stops excessive amounts of oil from being drawn out of the crankcase. ...

  177. What does "metering style" mean?

    Speed Density vs. Mass Airflow vs. Alpha-N

    Metering style is the strategy the ECU uses to measure airflow and calculate fuel requirements. A Fuel Injection System compares airflow, engine rpm, and other sensor information in the Fuel Map. It uses that information to determine how much fuel i...

  178. Which style manifold is better?

    Single Plane vs. Dual Plane Intake Manifolds

    Most Intake Manifolds for Carbureted Engines are either “single plane” or “dual plane”. Both designs work well when matched with the right combination of parts. The best choice for you depends on the rpm range where your engine spends the most time....

  179. What does "injection style" mean?

    Throttle Body vs. Multi-Port vs. Direct Injection

    Every fuel injection system will have a throttle body with a butterfly valve. This controls airflow. They will also have one or more fuel injectors to provide fuel. What makes them different is: Where the fuel injectors are located.How the fuel inje...

  180. Can I run E85?

    The Basics of Switching to Ethanol

    You've seen cars making huge power on E85. However, you can’t just switch fuel. That would make your car run worse. It could also cause damage. How does it make more power? E85 contains less energy per gallon than gasoline. But, an engine designed...

  181. What is a throttle body spacer?

    Definition & Description

    A Throttle Body Spacer is an easy way to increase Horsepower, Torque, and fuel economy. The spacer installs between the throttle body and intake manifold. It is typically about 1 in. thick and made from aluminum or nylon. It can also be smooth on th...

  182. What’s the difference between a fuel tank and a fuel cell?

    Definition & Description

    A fuel tank and a fuel cell are both designed to hold fuel. But, they are intended for different uses. Fuel Tanks A Fuel Tank is intended for your average street vehicle. Most tanks are made of stamped steel or molded plastic. Fuel tanks are usu...

  183. What is fuel cell foam?

    Definition & Description

    Fuel Cell Foam is a special, sponge-like material that is installed inside a racing fuel cell. The foam is mostly air, so it doesn’t reduce the capacity of the cell. However, it provides a few key benefits: It reduces sloshing. This reduce...

  184. What is a return style fuel pressure regulator?

    Definition & Description

    Return Style Regulators are a common choice for a performance fuel system. These regulators are also called “bypass” regulators. How does it work? Fuel from the pump enters the inlet. It flows past the “bypass valve,” which is held closed by a s...

  185. What is a non-return style fuel pressure regulator?

    Definition & Description

    Non-Return Style Regulators are common on older vehicles. They are usually used with a carburetor. They are also called “blocking” or “deadhead” regulators. How does it work? Fuel from the pump enters the inlet. It flows through the “fuel contro...

  186. What size fuel pump do I need?

    Fuel Pump Specs Defined

    Fuel Pumps are sized by flow rate. Flow rate is the amount of fuel a pump can supply over time. It is usually measured in gallons per hour (gph) or liters per hour (lph). How do I know what flow rate I need? Minimum flow rate needs can be calculat...

  187. Which bushing material is better?

    Polyurethane vs. Rubber

    Many Bushings & Mounts offer the choice of polyurethane or rubber. Each material has its benefits and trade-offs. It isn’t fair to say one is better than the other. The right material for you depends on the performance you are looking for. Ru...

  188. What type of electric fuel pump should I use?

    In Tank vs. In Line vs. Fuel Sump/Surge Tank

    Electric fuel pumps come in three basic types. As long as a fuel pump provides the Flow Rate your engine needs at the pressure your Fuel Injected or Carbureted system requires, it will work just fine. It is just a matter of deciding which one works ...

  189. Which shock / strut design is better?

    Monotube vs. Twin-Tube Absorbers

    Shocks and Struts absorb the up and down motion of the wheel as it travels over the road. This makes for a more comfortable ride. They also make the vehicle safer. When they work properly, they improve both handling and braking. There are a few thi...

  190. What is a twin-tube shock?

    Definition & Description

    Twin-Tube Shocks and Struts are common on most OEM vehicles. They make for a safe and comfortable ride. How are they designed? A twin-tube absorber has an inner and outer cylinder. The inner tube is filled with oil. The piston rod is attached to t...

  191. What is a monotube shock?

    Definition & Description

    Monotube Shocks and Struts are a common suspension upgrade. They can improve vehicle handling and braking. They are used on all types of race cars, off-road rigs, and performance street vehicles. How are they designed? In a monotube absorber, all ...

  192. What is a ball joint?

    Definition & Description

    A Ball Joint is the pivot point between the control arm and the spindle or steering knuckle. Most ball joints are made up of: A tapered shaft, threaded on one end with a ball on the other end A socket that holds the ball Usually, a rubber bo...

  193. What’s the difference between shocks, struts, and coilovers?

    Definitions and Descriptions

    The terms Shocks and Struts are pretty much interchangeable today. It used to be that full-frame vehicles used shocks and unibody vehicles used struts. With modern suspension design, that is no longer the rule. All of these parts absorb energy from...

  194. Can I remove my catalytic converter?

    Legal & Performance Implications

    We do not recommend removing the Catalytic Converter from any street-driven vehicle. Running a cat-free exhaust is only recommended for closed-course competition vehicles. Why? First, it’s illegal to remove the cat from a vehicle that was original...

  195. What are the different types of electric relays?

    Relay Terms & Schematics Explained

    An Electric Relay is a high amperage switch controlled with a small electrical input. Normally the small input controls an electromagnetic coil. This coil moves a set of contacts that can handle from 10-200 amps. Relays are usually printed with vol...

  196. Is a plastic or metal intake tube better?

    Air Intake Tube Materials

    Air Intake Kits are a popular performance upgrade. They are affordable, easy to install, and provide noticeable gains over a stock intake. However, there are lots of choices. One thing that can be different between kits is the tube. Metal Tubes ...

  197. What is a tunnel ram?

    Definition & Description

    A Tunnel Ram is a special type of intake manifold. They became popular with drag racers in the 1960s. Today, they can be found on all types of cars and trucks. Technically, a tunnel ram is a Single Plane Manifold. However, it is unique enough for...

  198. What is a K-member?

    Definition & Description

    The K-Member is a removable, structural part of the chassis. It attaches to the frame rails and passes under the engine. The K-member is the mounting point for most of the front suspension. It also has mounting points for the Motor Mounts and Stee...

  199. What type of cooling fan should I use?

    Mechanical vs. Electric Fans

    Increased power generates more heat. The type of fan you use can keep your engine cool. It can also free up a few extra horses! The engine cooling fan needs to be “turned on and off” for the system to function properly. Different types of fans are ...

  200. What size fan spacer do I need?

    Correct Positioning of a Belt-Driven Cooling Fan

    When replacing a Recommended Minimum Clearances For best performance, follow these guidelines: About half the depth of the blade should be inside the fan shroud. The forward edge of the fan blades should be at least 1 in. from the radiator....

  201. Can I remove my fan shroud?

    The Function of the Fan Shroud

    It might seem like it just gets in the way. But the Fan Shroud plays an important role in the cooling system. Removing the shroud is not recommended. In fact, if you don’t have one or yours is damaged: Repair It Replace It Fabricate a New One...

  202. Crossflow vs. Downflow Radiators

    Cooling Basics - Radiator Type

    An Automotive Radiator falls into one of 2 basic categories. The difference is the direction the coolant travels across the radiator core. How do they work? A Downflow Radiator is used in many older vehicles. In this design, the tanks are horizont...

  203. What is a “double pass” radiator?

    Single vs. Double & Triple Pass Radiators

    In a single pass radiator, coolant only crosses the radiator core one time. Fluid enters the inlet. It flows across the core in tubes. It is collected in the opposite side tank. It exits the outlet and flows through the system again. Singl...

  204. Is a 3-row radiator better than a 2-row?

    Cooling Basics - Row Quantity vs. Tube Size

    In the radiator core, coolant flows through tubes. The tubes are joined together by the fins. The more tube-to-fin contact area; the more heat can be exchanged. One way to increase the contact area is to use more tubes. This is accomplished by addi...

  205. What type of radiator should I get?

    Radiator Buying Guide

    When it comes to selecting a New Radiator, there are a lot of choices. So, how do you get the right one? It really depends on the engine you are trying to cool. Stock & Mildly Modified Engines For most street vehicles, an OEM Replacement Rad...

  206. Should I run a colder thermostat?

    Selecting the Right Thermostat Opening Temperature

    If you hang around car guys long enough, you will hear that a colder thermostat will help you make more power. However, a low-temp thermostat by itself does not make power. In some circumstances, a colder thermostat can help the engine make more po...

  207. Why do I need to use antifreeze?

    Cooling Basics - The Fluid

    The fluid you use in your engine’s cooling system can affect its performance. For most vehicles, a 50/50 mixture of Antifreeze and water is recommended. Why? In a perfect world, we would use pure distilled water. Water is an excellent cooling agen...

  208. Should I use a high-pressure radiator cap?

    Cooling System Pressure, Coolant Mixture, and Boiling Point

    High-pressure Radiator Caps have a specific purpose. However, let’s start with what they DON’T do. High-pressure caps will not solve overheating problems. For overheating problems, troubleshoot and/or upgrade these parts first: Radiator Cooling...

  209. How do I pick the right size fuel injection kit?

    Horsepower Ratings Explained

    EFI Kits are rated by the maximum horsepower they support with gasoline. But what about the smallest engine a system can support? Choosing an EFI system that’s too big will result in poor idle and bad throttle response, same as a carburetor. Keep re...

  210. What does “SFI Approved” mean?

    Safety Certified Racing Parts

    Parts that carry an SFI approval are certified to be safe for racing. This means they are designed and tested to meet certain safety requirements. The requirements are established by The SFI Foundation, Inc. What is the SFI Foundation? The SFI Fou...

  211. Does an SFI certification expire?

    SFI Dates & Our Policy

    Some SFI Approvals do have an expiration date. Time-limited parts will have a label that lists the expiration date. However, this does not mean the product is no longer good after that date. Some products can be inspected and recertified. Which par...

  212. What is a TPP rating?

    Driver's Suit Safety Ratings

    Driving Suits for racing are assigned a TPP value. TPP stands for Thermal Protective Performance. It is not exactly a safety rating. Rather, it is a value determined through lab testing. The TPP value indicates how long the suit can be exposed to he...

  213. Can I use a fuel injection kit to control ignition timing?

    The Benefits of Computer Controlled Timing

    Most fuel injection kits will work with your existing ignition system. All they really need is a tach signal. Ignition Timing Advance can be handled Mechanically and/or with Vacuum, just like with a carburetor. However, there are advantages to comp...

  214. What is a brake booster?

    Definition & Description

    A Brake Booster is a device that increases the force applied from the brake pedal to the master cylinder. The booster is what separates a power-assisted braking system from a manual one. The most common type of brake booster uses Engine Vacuum. H...

  215. Can I run a turbocharger, supercharger, or nitrous oxide with my fuel injection kit?

    NOS, Turbo, and Blower Compatibility Explained

    Power adders like nitrous, turbochargers, and superchargers are a natural fit with EFI. If you want to use power adders now or in the future, buy an EFI kit that is Power Adder Compatible from the start. A power adder compatible kit will work fine w...

  216. What is a residual valve?

    Definition & Description

    A Residual Pressure Valve is a special type of one-way check valve. They are used to keep a small amount of pressure in the brake lines. This helps the brakes engage more quickly and reduces pedal travel. There are 2 basic types of residual valves,...

  217. Which fuel injection kit is right for me?

    A Basic Overview of EFI Systems

    If you’re tired of messing with jets and needles, replacing your carburetor with a Fuel Injection System has never been easier. If you make the right choices, the system will work great with engine you have today. It can also support your planned ...

  218. What is a vented rotor?

    Solid vs. Vented Brake Rotors

    Brake Rotors are available in 2 basic types, solid or vented. This is known as the “rotor construction.” Vented Rotors Vented Brake Rotors are common on most modern vehicles. They have a hollow channel between the inner and outer surfaces. This ...

  219. Do I need drilled or slotted rotors?

    Brake Rotor Styles Explained

    There are lots of options when it comes to selecting new Brake Rotors. Once you know if they’re Solid or Vented, the next questions is “What Style?” Brake rotors come in several styles designed to handle Brake Fade in different ways. Solid Surface...

  220. Do I need a vacuum pump or canister?

    Power Brakes & Big Cams

    Installing a Performance Camshaft can add a lot of power. However, a common side effect is less vacuum. For vehicles with power brakes, this means a hard pedal, which isn’t fun to drive. Why does this happen? Upgrading the camshaft increases perform...

  221. What kind of body filler should I use?

    The Different Types of Body Filler Explained

    Body Fillers fall into a handful of different categories. Each one has its own benefits. Depending on your project, you may want to use more than one type. Body Filler Comparison Chart   Reinforced Body Filler Stand...

  222. What is ZDDP?

    Definition and Description

    ZDDP stands for zinc dialkyldithiophosphate. It was developed in the 1940’s and was a common and effective additive in engine oil. By the 1990’s, the ZDDP level in most oil was reduced. This was due to the negative effects it has on the Catalytic C...

  223. What sandpaper should I use?

    Sandpaper Recommendations for Paint and Body Work

    Before you paint your car, you’ll need to sand it with a fine sandpaper or the paint won’t stick. You may also need to shape and straighten the surface. These steps will require coarser Sandpapers. Sand scratches from coarse sandpaper must be remove...

  224. What's the difference between sanding grits?

    Sandpaper Ratings Explained

    Sandpaper coarseness is indicated by numbered grits. As the grit numbers get smaller, the sandpaper gets coarser. Coarse sandpaper makes deep scratches. Those deep scratches need to be removed completely by “stepping-up” with gradually finer grits b...

  225. What kind of paint gun and air compressor should I use?

    Getting the Right Spray Setup

    Any style spray gun can give you good results if it has the right fluid tip size. The recommended tip size for the paint or primer you are using can be found in its Product Data Sheet. Larger tip sizes are used with thicker material, like primers. T...

  226. Can I use this paint or primer in my state?

    VOC Regulations Aren't Just for California

    VOC stands for volatile organic compounds. These are chemical solvents that evaporate at room temperature and cause ground level air pollution. They are present in paints, primers, hardeners, reducers, and countless other consumer products. The EPA...

  227. Which helmet safety rating do I need?

    Snell, DOT, SFI, FIA, and ECE

    Racing Helmets are available in many different styles. However, the safety ratings can be confusing. Before you buy a helmet, check the rule book for your track or sanctioning body. Most organizations will specify what type of helmet is required. ...

  228. What kind of paint and primer should I use?

    Single Stage vs. Base Coat Paint Systems

    The differences between the systems are more than just the top coat you choose. The products and processes are different from the beginning. Either system can give great results on any type of job. However, each process has its own benefits. Keep re...

  229. Can I use epoxy primer with my base coat clear coat paint job?

    Paint and Primer Compatibility Explained

    Once dry and sanded, The “substrate” and “recoating” section of the TDS will let you know which products are compatible. Keep reading to learn how to build a durable finish using products from different paint systems. Important Notes Wet-on-we...

  230. Which Summit brand heads do I have?

    Summit Racing Cylinder Head Identification

    You may have picked up a set of Our Cylinder Heads from a swap meet. Maybe you bought a used vehicle with a set of our heads already installed. How do you know what they are? Keep reading to learn about the differences and how to tell. Small Block ...

  231. Will this pulley work on my LS engine?

    LS Engine Harmonic Balancers & Accessory Drives

    GM used 3 basic serpentine systems on the LS engines. They all used different spacing to fit inside their original vehicles. Most of the pulleys will bolt onto any LS engine. However, you need to know which one you have to maintain proper belt align...

  232. Will this paint match my car?

    The Causes of Color Variation Explained

    All of our Automotive Spray Paints are made for overall resprays. They don’t match any specific OEM color. We do offer some Touch Up Paint that can be a close match, but a perfect match takes some luck. This is due to variations in color from the fa...

  233. How do I fix a dent?

    An Introduction to Hammer and Dolly Technique

    When a dent is formed, the metal gets stretched severely around the primary impact point making a low spot. This isn’t the only damage. Right around that area there will be a high spot. That metal is also stretched, but in the reverse direction. The...

  234. How do I fix a large dent?

    Metal Straightening Techniques Explained

    Dents can be more complicated than a simple ding. Keep reading to learn how to repair different types of body damage. Where do I start on a big dent? Sometimes you need to get the panel closer to its finished contour before you can finish the meta...

  235. How do I get my body work perfectly straight?

    Sanding Block and Guide Coat Use Explained

    While Orbital and Straight Line sanders are great for removing material quickly, they won’t make your panels straight. Neither will a piece of sandpaper stuck to your hand. It’s also easy to miss a small dent or scratch by feel alone. The secret to...

  236. How do I fix rust?

    Different Repair Methods Explained

    All metals corrode when exposed to oxygen, moisture, and corrosive elements. On metals like brass or aluminum, corrosion forms a thin protective layer which slows the process. Iron and iron alloys act differently. Corrosion of iron is called rust. R...

  237. What type of fuel lines should I use?

    Metal, Rubber, Braided, or PTFE Lined

    Fuel Lines can be made from many different materials. If you plan to race, be sure to check the rule book for your track or sanctioning body. Using the right material the first time will save you time, money, and headaches. Metal Lines Most cars c...

  238. How do I choose the right fuel filter?

    Micron Ratings and Element Types Explained

    Fuel injectors, carburetors, and electric fuel pumps can be harmed by relatively small particles. To keep your car running at peak performance you need to choose a filter with the right micron rating and element type. Micron Ratings A micron is so...

  239. Basics of Fuel Line Routing

    How do I route fuel lines?

    After choosing Fuel Line Size and What Type of Fuel Lines to Run, you need to safely route them from the tank to the engine. If you plan to race your vehicle, we recommend that you consult the rule book for any race sanctioning body you are particip...

  240. What is the Corvette style fuel system?

    Using the Corvette Style Filter/Regulator

    The Corvette style fuel system uses an after-pump fuel filter as both a filter and a return style regulator. Unlike adjustable Return Style Regulators, the fuel pressure is set at 58 PSI. This fuel system is commonly used with LS swaps. It can also ...

  241. What are the different types of clutch discs?

    Selecting The Right Disc Material and Style

    A clutch disc is a mechanical assembly with friction material on both sides. It connects the engine to the transmission by a splined hub when squeezed between the Pressure Plate and flywheel. Most clutch discs use torsional springs in the splined h...

  242. What is a pilot bushing?

    Pilot Bearings and Pilot Bushings Explained

    A pilot bearing or pilot bushing is one of the most important parts of your clutch. Typically pressed in the end of a crankshaft or flywheel, they center and support the input shaft. They also allow for the engine’s crankshaft and the transmission’s...

  243. What kind of flywheel should I use?

    Flywheel Weights Explained

    A flywheel is a heavy metal disc mounted to the crankshaft. It provides the mounting and friction surface for your clutch assembly as well as a gear that engages the starter. The rotational force, or inertia, of its spinning helps to get your car mo...

  244. How do I choose the right clutch?

    The Anatomy of a Clutch

    A clutch allows power to transfer from the engine to the transmission. It also allows the engine to disconnect from the transmission so you can start, stop, and shift. A clutch can be broken down into 5 main parts. Keep reading to learn how to choos...

  245. Mopar ESG, ESH Engine Specs

    6.4L Mopar "Apache" Car and SUV Engine Specs

    Performance Specifications Compression Ratio 10.9:1 Horsepower Rating 470-485 hp Torque Rating 465-475 ft./lbs.   Application Information   VIN ...

  246. Mopar ESF Engine Specs

    Gen 3 Hemi 6.1L SRT8 Car and SUV Engines

    Performance Specifications Compression Ratio 10.2:1 Horsepower Rating 425 hp Torque Rating 420 ft./lbs.   Application Information   VIN 8th Digi...

  247. Intro to the Mopar EZA and EZB

    Early Gen 3 Hemi 5.7L, Car and Truck Engines

    EZA The EZA was the first Gen 3 Hemi. It was introduced in 2003 with the newly redesigned 3rd generation Dodge Ram Truck. The EZA was used exclusively in Dodge Ram trucks from 2003-2008 and the Dodge Durango from 2004-2005. EZB The EZB was the fi...

  248. Mopar ESA, ESB Engine Specs

    6.4L Mopar "Big Gas" Truck Engine Specs

    Performance Specifications Compression Ratio 10.0:1 Horsepower Rating 366-410 hp Torque Rating 429 ft./lbs.   Application Information   VIN 8th ...

  249. Intro to Mopar ESA, ESB, ESG and ESH

    Gen 3 Hemi 6.4L Car, SUV and Truck Engines

    ESA and ESB These Hemis are found only in medium and heavy duty RAM trucks (2500-5500) starting in 2014. The ESA and ESB engines are identical. However, the ESB is detuned for fleet and heavy duty applications. ESG and ESH Introduced in 2011 as t...

  250. Intro to the Mopar ESF

    Gen 3 Hemi 6.1L SRT-8 Car and SUV

    ESF The 6.1L was the beginning of the performance-first Gen 3 Hemis. It made 425 hp using an aluminum intake, tubular exhaust headers, revised high flow heads, and a superior cam profile. The ESF was only found in 2005-2010 SRT-8 versions of the Ch...

  251. I know my VIN. Which Gen 3 Hemi do I have?

    Identify Mopar Gen 3 Hemi Engines by VIN

    You’ll find the third Gen Hemi in a number of Chrysler, Dodge, Jeep, and Ram vehicles. You can identify them with a combination of Vehicle Identification Number (VIN), year, and type of vehicle. Locate the 8th digit of the VIN and vehicle year. ...

  252. Intro to the Mopar EZC, EZD, EZE, EZF, and EZH

    2009 and Newer Gen 3 Hemi Eagle 5.7L Car, SUV and Truck Engines

    The late 5.7Ls are all very similar in terms of performance and parts interchangeability. The most common are the EZH and EZC. EZH The EZH was introduced in the middle of the 2009 model year. It features both Variable Valve Timing (VVT) and Mopar’...

  253. Can I use an older Mopar automatic transmission with a Gen 3 Hemi?

    Mating a Chrysler Automatic to a Gen 3 Hemi Engine

    Any automatic transmission with the small block “LA” bellhousing will bolt up to a Gen 3 Hemi. The only difference is that the bolt at the 12 o’clock position is not used in the Hemi block. There are some other considerations when doing this swap. T...

  254. Hemi Engine Tech - Multi Displacement System (MDS)

    Overview of the Mopar MDS system

    The purpose of the Multiple Displacement System (MDS) is to improve gas mileage. How is it Identified? The MDS system can be identified in two ways. The first is by removing the intake manifold and inspecting the valley. In the valley you will ...

  255. How do I delete the MDS on my Gen 3 Hemi engine?

    Disabling MDS Vs. MDS Delete

    This article applies to any Gen. 3 Hemi engine with the Multi Displacement System (MDS). You have three options that will keep the engine in 8-cylinder mode. Option 1 Adjust the transmission settings. MDS is automatically disabled when you switch ...

  256. How do I cam swap a Gen 3 Hemi?

    Removal and Installation Procedure for 2003 and Later Mopar Hemi Car, SUV, and Truck Engines

    Replacing the cam in a Gen 3 Hemi is a little more involved than some other engines. While it is possible to swap a cam with the engine in the vehicle, replacement of the timing chain and guides requires removal of the oil pan. This can be difficult...

  257. How do I get more power out of my Early 5.7L Gen 3 Hemi?

    Upgrading the Early 5.7L Hemi Engine

    There are many options for upgrading your Hemi. On a stock engine, the following upgrades can improve performance and fuel economy: Cold Air Intake Kit Headers Aftermarket Exhaust Computer Programmer Engine Block These engines have a 3.917 ...

  258. How do I get more power out of my 2009 and Newer 5.7L Gen 3 Hemi?

    Upgrading the Eagle 5.7 Gen 3 Hemi Engine

    There are many options for upgrading your Hemi. On a stock engine, the following upgrades can improve performance and fuel economy: Cold Air Intake KitHeadersAftermarket ExhaustComputer Programmer Engine Block These engines have a 3.917 in. bore dia...

  259. How do I get more power out of my 6.4L Gen 3 Hemi?

    Upgrading the 6.4L Hemi Engine

    There are many options for upgrading your Hemi. On a stock engine, the following upgrades can improve performance and fuel economy: Cold Air Intake Kit Headers Aftermarket Exhaust Computer Programmer Engine Block These engines have a 4.090 ...

  260. Ford 7.3L "Godzilla" Engine Specs

    Ford 7X Gas Engine Specifications

    Performance Specifications Compression Ratio 10.5:1 Horsepower Rating 430 - 505 hp Torque Rating 475 - 550 ft./lbs.   Application Information VIN 8th Digit Ye...

  261. Intro to the Ford 7X “Godzilla” V8

    The 2020 and Newer 7.3L Gas Engine

    Ford first introduced the Godzilla engine in 2020 as an option for Ford Super Duty trucks. In 2021 a detuned version found its way into the E-series Super Duty vans. This was Ford’s first pushrod V8 in decades. It makes impressive power in stock for...

  262. How do valve timing events affect engine performance?

    Valve Timing Events Explained

    Knowing what Valve Timing Events are and how they affect performance will help you understand what to expect from your cam. Valve timing events set Duration, Lobe Separation, Exhaust Valve Opening (EVO) EVO controls the evacuation of combust...

  263. Ford Coyote First Gen Car Engine Specs

    2011 to 2014 Mustang GT 5.0L Engines

    Performance Specifications Compression Ratio 11.0:1 Horsepower Rating 412 hp - 420 hp Torque Rating 390 ft./lbs.     Application Information   ...

  264. Ford Coyote Second Gen Car Engine Specs

    2015 to 2017 Ford Mustang GT 5.0L Engines

    Performance Specifications Compression Ratio 11.0:1 Horsepower Rating 435 hp Torque Rating 400 ft./lbs.     Application Information   V...

  265. Ford Coyote Third Gen Car Engine Specs

    2018 to 2023 Ford Mustang GT 5.0L Engines

    Performance Specifications Compression Ratio 12.0:1 Horsepower Rating 460 hp Torque Rating 420 ft./lbs.     Application Information   V...

  266. Ford Coyote First Gen Truck Engine Specs

    2011 to 2014 Ford F150 5.0L Engines

    Performance Specifications Compression Ratio 11.0:1 Horsepower Rating 412 hp - 420 hp Torque Rating 390 ft./lbs.     Application Information   ...

  267. Ford Coyote Third Gen Truck Engine Specs

    2018 to 2023 F150 5.0L Engines

    Performance Specifications Compression Ratio 12.0:1 Horsepower Rating 395 hp Torque Rating 400 ft./lbs.     Application Information   V...

  268. Ford Coyote Second Gen Truck Engine Specs

    2015 to 2017 F150 5.0L Engines

    Performance Specifications Compression Ratio 10.5:1 Horsepower Rating 360 hp Torque Rating 380 ft./lbs.     Application Information   V...

  269. Intro to the Ford Coyote Engine

    2011 and newer F150 and Mustang 5.0L Engines

    In 2011 Ford released the newest version of their modular engine, the “Coyote” 5.0L. It can be found in the Mustang GT and F-150. While there are some differences between the car and truck version, they offer impressive power across 3 gene...

  270. Ford Road Runner Engine Specs

    2012 to 2013 Mustang Boss 302 Engines

    Performance Specifications Compression Ratio 11.0:1 Horsepower Rating 444 hp Torque Rating 380 ft./lbs.     Application Information   V...

  271. Ford Coyote Third Gen Bullitt and Mach 1 Engine Specs

    2019 to 2023 Limited Production Mustang 5.0L Engine Specs

    Performance Specifications Compression Ratio 12.0:1 Horsepower Rating 480 hp Torque Rating 420 ft./lbs.     Application Information   V...

  272. I don't know the VIN. Which 5.0L Coyote Engine do I have?

    Identify Ford Coyote Engines by Inspection.

    Before you begin any project, you need to know the starting point. When it comes to the Ford Coyote 5.0L, there can be some confusion. There are around a dozen variations of these engines used in F150s and Mustangs starting in 2011. The similarities...

  273. How do I get more power out of my Coyote 5.0L?

    Upgrading the Ford Coyote Engine

    p>There are many options for upgrading your 5.0L. On a stock engine, the following upgrades can improve performance and fuel economy: Cold Air Intake Kit Headers Aftermarket Exhaust Computer Programmer Engine Block These engines have a 3...

  274. Ford 4.6L 2V Engine Specs

    1991 to 2012 4.6L Ford 2-Valve Modular Motor Technical Specifications

    Performance SpecificationsCompression Ratio9.0:1Horsepower Rating190 hp - 260 hpTorque Rating260 ft./lbs. - 305 ft./lbs.     Application Information  VIN 8th DigitYearMakeModelW,91992-2012FordCrown VictoriaW,61997-2014FordE-150W...

  275. Ford 4.6L 3V Engine Specs

    2005 to 2010 4.6L Ford 3-Valve Modular Motor Technical Specifications

    Performance SpecificationsCompression Ratio9.4:1Horsepower Rating300 hpTorque Rating320 ft./lbs.     Application Information  VIN 8th DigitYearMakeModel82006-2010FordExplorer82009-2010FordF-150H2005-2009FordMustang GTH2008-2009Fo...

  276. Ford 4.6L 4V Engine Specs

    1993 to 2004 4.6L Ford 4-Valve Modular Motor Technical Specifications

    Performance SpecificationsCompression Ratio8.5:1 - 10.0:1Horsepower Rating260 hp - 300 hp*Torque Rating265 ft./lbs. - 320 ft./lbs.*     Application Information  VIN 8th DigitYearMakeModelR2003-2004FordMustang Mach 1V199...

  277. Ford 5.4L 2V Engine Specs

    5.4L Ford 2-Valve Modular Motor Technical Specifications

    Performance SpecificationsCompression Ratio9.0:1 - 9.8:1Horsepower Rating235 hp - 260 hpTorque Rating330 ft./lbs. - 350 ft./lbs.   Application InformationVIN 8th DigitYearMakeModelL, Z1997-2017FordE-150L, M, Z1997-2017FordE-250L, M, Z...

  278. Ford 5.4L 3V Engine Specs

    5.4L Ford 3-Valve Modular Motor Technical Specifications

    Performance SpecificationsCompression Ratio9.8:1Horsepower Rating300 hp - 320 hpTorque Rating330 ft./lbs. - 360 ft./lbs.   Application InformationVIN 8th DigitYearMakeModel52005 - 2014FordExpeditionV, 52004 - 2010FordF-15052005 - 2010FordF...

  279. Ford 5.4L 4V Engine Specs

    5.4L Ford 4-Valve Modular Motor Technical Specifications

    Performance SpecificationsCompression Ratio8.5:1 - 10.0:1Horsepower Rating300 hp - 550 hpTorque Rating330 ft./lbs. - 510 ft./lbs.     Application Information  VIN 8th DigitYearMakeModelH2000FordMustang Cobra R*S2004 - 2006Fo...

  280. Intro to the Ford Modular 4.6 / 5.4L 2V Engine

    Ford Modular 2-Valve V8 Motor Overview

    Ford 4.6 2-Valve Engine. The 4.6L Ford engine was first used in the 1991 Lincoln Town Car. It was also made available for trucks and vans starting in 1997. The PI or “Performance Improved” version was introduced in 1999 and ran virtually unchanged i...

  281. Intro to the Ford Modular 4.6 / 5.4L 3V Engine

    Ford Modular 3-Valve V8 Motor Overview

    Ford 4.6 3-Valve Engine. The 4.6L 3V engine was first available in the 2005 Mustang GT. Variable cam timing and a charge motion control valve helped make this a potent performance engine. It was also available in some trucks and SUVs until 2010. For...