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LS9 Engine Details





The LS9 Engine! V8 Supercharged Aluminum-Block Engine

Info courtesy of GM

The ZR1 (very limited availability) is powered by a 6.2 Liter aluminum-block V8 boosted by an Eaton® TVS™ (Twin Vortices Series) supercharger for a total power output of 638 hp at 6500 rpm and 604 lb.-ft. of torque at 3800 rpm. It is the most powerful motor ever to occupy the engine bay of a General Motors production car.

The supercharger features four lobes instead of the usual three for higher power and efficiency. It also features an intercooler to cool down the air/fuel charge for more power. In addition, nozzles squirt cooling oil into the underside of each piston.

The engine also features a dual-pressure fuel injection system for peak performance during multiple operating conditions.

Like the LS7 engine in the Z06, the LS9 features titanium connecting rods and exhaust valves as well as a dry-sump oil system with a larger capacity reservoir − now 10.5 quarts. The LS9 is hand-assembled at the GM Performance Build Center in Wixom, Mich.

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:
cast aluminum

Valvetrain:
overhead valve, 2 valves per cylinder

Fuel delivery:
SFI (sequential fuel injection)

Compression ratio:
9.1:1

Horsepower / kW:
638 / 475

Torque (lb-ft / Nm):
604 / 835

Recommended fuel:
premium required

EPA estimated fuel economy:
TBD




Dry-Sump Oil System

The dry-sump oil systems on the Z06 LS7 and ZR1 LS9 engines prevent oil starvation on high-g corners or under heavy braking. The system uses an additional oil reservoir separate from the crankcase and pumps oil through the engine to ensure proper lubrication under high-performance situations. Oil capacity has been increased to 10.5 quarts for 2009


A video of the oils jorney in the LS7 or LS9 engine!






Here is a great video of them building an LS9 in the factory!




This is a great video of the Supercharger Assembly!


ZR1 Eaton supercharger details Courtesy of Autoblog Video




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