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Performance Specifications |
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| Compression Ratio | 9.5:1 |
| Horsepower Rating | 270-295 hp |
| Torque Rating | 315-335 ft.-lbs. |
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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 |
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|
Suburban 1500 |
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GMC |
Yukon |
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Yukon XL 1500 |
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2002-2005 |
Cadillac |
Escalade (2WD) |
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|
2002-2006 |
Chevrolet |
Avalanche |
|
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2003-2007 |
Chevrolet |
Express |
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GMC |
Savana |
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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. |
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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 |
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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. |
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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 |