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Performance Specifications

Compression Ratio 9.9:1
Horsepower Rating 310 hp.
Torque Rating 335 ft./lbs.


Application Information

VIN 8th Digit

Year

Make

Model

B

2005-2007

Chevrolet

Silverado 1500, extended cab, 4WD

GMC

Sierra 1500, extended cab, 4WD


Engine Block Specifications

Casting Numbers

12567392

Material

Aluminum

Displacement

5.3L / 325 cid

Bore Dia.

3.780 in.

Stroke

3.622 in.

Deck Height

9.240 in.

Bore Spacing

4.400 in.

Thrust Bearing Location

#3 Main

Main Cap Style

6-Bolt

Main Housing Bore Diameter

2.751 in.

Cam Housing Bore Diameter

Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307

Cam-to-Crank Centerline

4.914 in.


Rotating Assembly Specifications

Piston Material

Hypereutectic Cast Aluminum Alloy

Piston Style

Flat Top

Piston Volume

0cc

Wrist Pin Dia. (2005)

0.9429 in., 0.9431 in (Floating)

Connecting Rod Material

Powdered Metal

Connecting Rod Style

I-Beam

Connecting Rod Length

6.098 in.

Connecting Rod Bolts

M9 x 1 x 43

Crankshaft Material

Cast Iron

Crankshaft Main Journal

2.559 in.

Crankshaft Rod Journal

2.100 in.

Reluctor Wheel

24x


Cylinder Head Specifications

Casting Numbers

799, 243

Material

Aluminum

Combustion Chamber Volume

65cc

Intake Port Shape

Cathedral

Intake Runner Volume

210cc

Exhaust Port Shape

D Port

Exhaust Runner Volume

75cc

Intake Valve Diameter

2.000 in.

Exhaust Valve Diameter

1.550 in.

Cylinder Head Bolt Style

Torque to Yield (TTY)

Cylinder Head Bolt Size

(10) M11 x 2 x 100, (5) M8 x 1.25 x 45


Camshaft Specifications

Duration at .050 in (int./exh)

193/193

Valve Lift (int./exh)

0.482 in./0.482 in.

Lobe Separation Angle (in degrees)

116

Cam Gear Attachment

3-Bolt


Valvetrain Specifications

Lifter Style

Hydraulic Roller

Lifter Link Style

Plastic Lifter Tray

Lifter Body Diameter

0.842 in.

Pushrod Length

7.385 in.

Rocker Arm Mounting Style

Pedestal

Rocker Arm Style

Die-Cast, Roller Fulcrum

Rocker Ratio

1.7

Rocker Offset

None

Valve Spring Style

Beehive

Valve Spring Color

Natural

Valve Angle

15 Degrees

Intake Valve Material

Steel - Solid Stem

Intake Valve Dia.

2.000 in.

Exhaust Valve Material

Steel - Solid Stem

Exhaust Valve Dia.

1.550 in.


Other Specifications

Intake Manifold

Truck Style

Throttle Body

78mm, 3-Bolt

Throttle Control Drive-by-Wire


Fuel Injector Flow

25.2 lb/hr. @ 58 psi

Fuel Injector Length (between O-Rings)

1.9 in.

Fuel Injector Connector

Mini-Delphi / Multec2

Fuel Rail

Returnless

PCM

Warren

Crankshaft Reluctor Ring

24x

Camshaft Sensor

Rear Mount, 1x on cam

Oil Pan

Rear deep sump

Oil Pump

Standard Volume

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