LS9 details
The LS9 features many unique design and manufacturing details that support its high-performance nature. They include:
Aluminum cylinder block with iron cylinder liners that are finish-bored and honed with a deck plate installed
Forged steel crankshaft with a nine-bolt flange
Titanium connecting rods and forged aluminum pistons
Stronger, rotocast cylinder heads with 2.16-inch (55 mm) titanium intake valves and 1.59-inch (40.4 mm) hollow-stem, sodium-filled exhaust valves
Camshaft with 0.555-inch (14.1 mm) lift for excellent idle and low-speed driving qualities
A dry-sump oiling system with 10.5-quart (9.9 liters) capacity
Integrated oil cooler and piston-cooling oil squirters
Intercooler cover visible through the hood window that features ZR1-unique blue accents and "LS9 SUPERCHARGED" embossed on the left and right sides
Specifications
LS9 6.2L SUPERCHARGED V-8
Displacement (cu in / cc):
376 / 6162
Bore & stroke (in / mm):
4.06 x 3.62 / 103.25 x 92
Block material:
cast aluminum
Cylinder head material:
A356-T6 rotocast aluminum
Valvetrain:
overhead valve, 2 valves per cylinder
Fuel delivery:
SFI (sequential fuel injection)
Compression ratio:
9.1:1
Horsepower / kW:
638 / 476 @ 6500 rpm
Torque (lb-ft / Nm):
604 / 819 @ 3800 rpm
Fuel shut-off (rpm):
6600
Recommended fuel:
premium required
Exhaust manifolds:
stainless steel
Main bearing caps:
forged steel
Crankshaft:
forged steel
Camshaft:
hollow steel; 0.555-in (14.1 mm) lift
Connecting rods:
forged titanium
Valves:
intake: titanium
exhaust: hollow steel
Valve lifters:
hydraulic roller
Supercharger:
R2300, four-lobe "Roots" type (2.3L)
Additional features:
piston oil-spray cooling; direct-mount ignition coils; 11-rib accessory drive
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