6-76
Engine Specifications
Type 5.7L V8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN Engine Code
LS1 G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LS6 S. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 346 cubic inches (5665 cc). . . . . . . . .
Fuel Delivery Sequential Multi
-Port. . . . . . . . . . . . .
Fuel Injection (SFI)
Valve Arrangement Overhead Valve. . . . . . . . . . . . .
Piston Displacement 5.7L. . . . . . . . . . . . . . . . . . . . . .
Bore 3.90 inches (9.9 cm). . . . . . . . . . . . . . . . . . . . . .
Stroke 3.62 inches (9.2 cm). . . . . . . . . . . . . . . . . . . .
Compression Ratio
LS1 10.0:1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LS6 10.5:1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horsepower
LS1 350@5600 rpm. . . . . . . . . . . . . . . . . . . . . . . . .
LS6 380@6000 rpm. . . . . . . . . . . . . . . . . . . . . . . . .
Torque
LS1 (Automatic Transmission) 360@4000 rpm. . . .
LS1 (Manual Transmission) 370@4400 rpm. . . . . .
LS6 380@4800 rpm. . . . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-8-7-2-6-5-4-3. . . . . . . . . . . . . . . . . .
Thermostat Starts to Open 187
_
F (86
_
C). . . . . . . .
Normal Maintenance
Replacement Parts
Engine Air Cleaner/Filter A917C*. . . . . . . . . . . . . .
Battery 75P
-7YR*. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Surge Tank Cap GM Part No. 10296465. . .
15 psi (105 kPa)
Engine Oil Filter PF44*. . . . . . . . . . . . . . . . . . . . . . .
PCV Valve CV948C*. . . . . . . . . . . . . . . . . . . . . . . . .
0.060 inch (1.524 mm)
Spark Plug PTJ16R15 (0.060 inch Gap). . . . . . . . . .
Denso Type Number
Windshield Wiper Blade
Length 22 inches (55.9 cm). . . . . . . . . . . . . . . . . . . .
Type 9 mm x 3 mm Shepherd’s Hook. . . . . . . . . . . .
* ACDelco
R
part number.
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