2008 SEMA Show: GM Performance Parts to release LS9 6.2-liter supercharged V8 crate engine

Article by Christian Andrei, on August 27, 2008

The fastest and the most powerful production car in the history of GM, the 2009 Corvette ZR1, is powered by the LS9 6.2-liter supercharged V8 engine. This engine will be offered as a complete crate engine package from GM Performance Parts in the third quarter of next year.

It provides an astonishing 638 hp (475 kW) and 604 lb-ft of torque (819 Nm). The LS9 will be the perfect all-in package for the buffs and racers who want the definitive LS power plant for their venture cars, from restored or modified vintage Corvettes, muscle cars and street rods to late model F-bodies and "shoebox" Chevys.

The supercharger and charge cooler are combined in the engine's valley for a reduced profile, permitting innovative makers to squeeze in the engine in different varieties of applications with an abundance of hood space.

The 6.2-liter displacement is shared with the LS3, but the LS9 is particularly made for high-revving power with a supercharger. It uses a more durable cylinder head castings and steel cylinder lines that are honed with a deck place loaded to make the most of its performance and cylinder sealing. 

High-rpm-validated lightweight reciprocating components, with titanium intake valves, are utilized, together with high-flow cylinder heads that draw the charge forced on them by a sixth-generation supercharger.

A fresh, four-lobe rotor design delivers greater power at the low end and sustains it longer through the rpm band for broad, on-demand power, whether off-idle or at speed.

A dual-brick charge cooler is integrated on a unique manifold system that places the "blower" in the engine's valley, with charge cooler on top. The LS9 from General Motors Performance Parts comes complete, with the ignition system, supercharger assembly, exhaust manifold, etc.

Included also are the production dry-sump oil pan and provisions for the charge cooler's liquid cooling system. Builders will be looking for an extra external oil tank, external coolant tank (for the charge cooler) and an ECU/wire harness.

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