The Lowdown On The Vastly '08 Improved Corvette

America's Sports Car Receives A New LS3 6.2 L V-8 And A Host Of Driving And Interior Refinements

Courtesy of GM Apr 1, 2008 0 Comment(s)
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The vast improvements for the new '08 Corvette include an all-new, larger, and more powerful V-8 engine to refinements in driving characteristics that solidify the Corvette's position as the preeminent American sports car, and further the argument that it is one of the world's best. There are also a host of exterior and interior refinements that raise the Corvette's luxury status and enhance the feeling of craftsmanship.

"Corvette is an uncompromising sports car that rewards its owners with impeccable performance and great comfort," says Ed Peper, Chevrolet general manager. "The changes and enhancements to the '08 Corvette reflect continual improvements that speak to Chevrolet's unflagging commitment to building the best sports car, and with nearly 55 years of experience, the Corvette just keeps getting better and better."

Back again for 2008 is the 505hp Corvette Z06, an American supercar that has won over enthusiasts, journalists, and racers around the world for its balance of racetrack-bred performance, daily-driving civility, and value.

Here's a look at the new and enhanced features for the '08 Corvette models.

All-New LS3 6.2L V-8 Engine For Coupe And Convertible
A new, 6.2L LS3 small-block V-8 is the standard engine in coupe and convertible models. It is rated at 430 hp (321 kW) and 424 lb-ft of torque (586 Nm) with the standard exhaust system; with the new, optional, two-mode exhaust system, power ratings increase to 436 horses (325 kW) and 428 lb-ft (592 Nm). As a result, the standard Corvette is a true supercar, capable of 190 mph. The LS3 with the six-speed, paddle-shift automatic is the fastest automatic-equipped Corvette ever, with 0-60 mph capability of 4.3 seconds.

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This new iteration of the storied small-block family features a revised, larger-bore cylinder block-4.06-inch/103.25mm versus the previous 6.0L's 4.00-inch/101.62mm bores-high-flow, LS7/L92-style cylinder heads; larger-diameter pistons; revised camshaft and camshaft timing; revised valvetrain with offset intake rocker arms; high-flow intake manifold; high-flow fuel injectors from the Z06's LS7 engine; and a new engine beauty cover.

Larger-Bore Block With Structural Enhancements
The LS3 features an aluminum cylinder block with cast-iron cylinder liners. In addition to its larger bores, which help create a 376ci displacement, the block casting also features revisions and machining in the bulkheads that enhance its strength and improved bay-to-bay breathing. But while the bore of the 6.2L engine is increased when compared with the previous 6.0L engine, the engine's stroke remains at 3.62 inches (92 mm). The pistons for the larger 6.2L engine also are new and are designed for its high-rpm performance capability.

High-Flow Cylinder Heads
Breathing for the new 6.2L engine is accomplished via new, high-flow cylinder heads. They're based on the large-port/large-valve design found on the LS7 engine and other GM L92 engines, with larger-capacity, straighter intake ports. The design optimizes intake flow to the combustion chamber; the exhaust ports are also designed for better flow.

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