Chevrolet Corvette ZR1
The 2009 Chevrolet Corvette ZR1 is an American supercar that brings the technology and engineering refinement of carbon-fiber, ceramics and electronics together in a distinctive design. The specialized components of the 2009 Chevy Corvette ZR1 work harmoniously to deliver the most powerful and fastest automobile ever produced by General Motors. The Corvette ZR1 does more than reach 200 mph; it keeps going to a top speed of 205 mph (330 km/h).
The new LS9 6.2L small-block engine is the power plant the supports the 2009 Chevrolet Corvette ZR1’s performance capability. The enabler of the LS9’s performance and refinement is a large, positive-displacement Roots-type supercharger with a new, four-lobe rotor design. The sixth-generation supercharger helps the LS9 make big power and torque at lower rpm and carries it in a wide arc to 6,600 rpm, as it pushes enough air to help the engine maintain power through the upper levels of the rpm band – the area where supercharged performance tends to diminish.
The LS9 engine is backed by an upgraded, stronger six-speed manual transmission and a twin-disc clutch that provide exceptional clamping power, while maintaining an easy clutch pedal effort. ZR1-specific gearing in the transmission provides a steep first-gear ratio that helps launch the car, and top speed is achieved in sixth gear – a change from the fifth-gear top-speed run-outs in the manual-transmission Corvette and Corvette Z06.
Commensurate with the ZR1’s engine output is the braking system, which is headlined by Brembo carbon-ceramic brake rotors. Found on only a few exotics and more expensive supercars, carbon-ceramic brake rotors are made of a carbon-fiber-reinforced ceramic silicon carbide material . Their advantage comes in low mass and resistance to wear and heat. In fact, the rotors should never show any corrosion or require replacement for the life of the vehicle, when used in normal driving.
Source: Chevrolet press