Performance Specifications |
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Compression Ratio | 9.5:1 |
Horsepower Rating | 270-295 hp |
Torque Rating | 315-335 ft.-lbs. |
Application Information |
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VIN 8th Digit |
Year |
Make |
Model |
T |
1999-2007 |
Chevrolet |
Silverado 1500 |
GMC |
Sierra 1500 |
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1999-2006 |
Chevrolet |
Tahoe |
|
Suburban 1500 |
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GMC |
Yukon |
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Yukon XL 1500 |
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2002-2005 |
Cadillac |
Escalade (2WD) |
|
2002-2006 |
Chevrolet |
Avalanche |
|
2003-2007 |
Chevrolet |
Express |
|
GMC |
Savana |
Engine Block Specifications |
|
Casting Numbers |
12567392, 12567393, 12551358 |
Material |
Iron |
Displacement |
5.3L / 325 cid |
Bore Dia. |
3.780 in. |
Stroke |
3.622 in. |
Deck Height |
9.230-9.240 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 = 2.326, Bore 2/4 = 2.317, Bore 3 = 2.307 (1999-2003) |
Bore 1/5 = 2.346, Bore 2/4 = 2.326, Bore 3 = 2.307 (2003-2007) |
|
Cam-to-Crank Centerline |
4.914 in. |
Rotating Assembly Specifications |
|
Piston Material |
Hypereutectic Cast Aluminum Alloy |
Piston Style |
Dished |
Piston Volume |
+8cc |
Wrist Pin Dia. (1999-2004) |
0.9447 in., 0.9448 in. (Pressed) |
Wrist Pin Dia. (2005-2007) |
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 |
Flexplate Mounting Flange (1999-2007) |
0.857 in. |
Cylinder Head Specifications |
|
Casting Numbers |
862,706 |
Material |
Aluminum |
Combustion Chamber Volume |
61cc |
Intake Port Shape |
Cathedral |
Intake Runner Volume |
200cc |
Exhaust Port Shape |
Oval |
Exhaust Runner Volume |
70cc |
Intake Valve Diameter |
1.890 in. |
Exhaust Valve Diameter |
1.550 in. |
Cylinder Head Bolt Style |
Torque to Yield (TTY) |
Cylinder Head Bolt Size (1999-2003) |
(8) M11 x 2 x 155, (2) M11 x 2 x 100, (5) M8 x 1.25 x 45 |
Cylinder Head Bolt Size (2004-2006) |
(10) M11 x 2 x 100, (5) M8 x 1.25 x 45 |
Camshaft Specifications |
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Years |
1999 |
2000-2006 |
Duration at .050 in (int./exh) |
191/190 |
191/190 |
Valve Lift (int./exh) |
0.457 in./0.466 in. |
0.457 in./0.466 in. |
Lobe Separation Angle (in degrees) |
115.5 |
114 |
Cam Gear Attachment |
3-Bolt |
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. |
1.890 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 |
All Cable Operated, 1999-2002 |
Drive-by-Wire phased in 2003-2004, on most models |
|
Fuel Injector Flow |
1999 21.8 lb/hr., 2000 24.8 lb/hr., 2001-2007 25.2 lb/hr. |
Fuel Injector Length (between O-Rings) |
1.9 in. |
Fuel Injector Connector |
Mini-Delphi / Multec2 |
PCM |
Warren |
Crankshaft Reluctor Ring |
24x |
Camshaft Sensor |
Rear Mount, 1x on cam |
Oil Pan |
Deep Rear Sump |
Oil Pump |
Standard Volume |