A new, 6.2-liter V-8 is the base engine in 2008 Corvette Coupe and Convertible models. It is rated at 430 horsepower and 424 lb.-ft. of torque with the standard exhaust system; with the new, optional two-mode exhaust system, power ratings increase to 436 horses and 428 lb.-ft. torque. The standard Corvette is now capable of 190 mph.
The 2008 LS3 with the six-speed paddle-shift automatic is the fastest automatic-equipped Corvette ever, with 0-60 mph capability of 4.3 seconds.
The new, two-mode performance exhaust system is similar in design and function to the system used on the Z06. It uses vacuum-actuated outlet valves, which control engine noise during low-load operation, but open for maximum performance during high-load operation. It is not identical to the Z06 system though; the Coupe/Convertible uses a 2.5-inch-diameter exhaust, while the Z06 uses a 3-inch system.
The Corvette's rack-and-pinion steering system is revised to provide improved feel at all speeds. The revisions are due to a new, premium machining process of the system's internal components, as well as a new, stiffer intermediate shaft and controller calibration changes.
Corvette Coupe and Convertible models also come with a new split-spoke wheel design, originally introduced on the limited-edition 2007 Indianapolis 500 Pace Car replicas.
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