The Chevrolet Corvette C7 Z06 that is slated to go on sale early next year in the international markets, will make 641bhp and 90kgm of torque as against the 625bhp initially claimed by the company. The model, which made its debut at the Detroit motor show earlier this year, is powered by a 6.2-litre 'LT4' V8 engine. The Z06 is the most powerful production car ever made by General Motors.
The new-generation Z06 is the first to get a removable roof, optional eight-speed automatic transmission and - more notably - a supercharged V8 engine. The engine utilises direct injection and variable valve timing.
In line with its high-performance nature, the LT4 in the Z06 benefits from a dry sump oiling system, ensuring that the correct oil pressure is maintained in strenuous conditions. Other notable design features of the engine include a 10:1 compression ratio, titanium intake valves, forged aluminium pistons and machined connecting rods. Thanks to the use of a compact 1.7-litre Eaton supercharger, which spins at up to 20,000rpm, the LT4 is only 25mm taller than the standard LT1 engine. This helps keep the Corvette's centre of gravity low, thereby improving its handling characteristics.
In classic Corvette style, the Z06 retains the C7's standard transverse-mounted composite springs, while magneto-rheological electrically adjustable dampers serve to reputedly improve both handling and ride quality. Double-wishbone suspension is used all round, with cast aluminium control arms helping reduce weight.
A 'Driver Mode Selector' offers customisable stability control, launch control, variable traction control and adjustments to the way the electronically controlled limited-slip differential locks up.
Braking power is provided by six-piston aluminium front calipers, four-piston rear calipers and steel disc brakes. Michelin Pilot Sport Cup 2 run-flat tyres are standard, mounted on 19x10 alloys at the front and 20x12 alloys at the rear.
Drive is sent to the Z06's rear wheels via a seven-speed manual gearbox or a rapid-shifting eight speed automatic. The eight-speed gearbox is a new addition to the Corvette range, and benefits from wheel-mounted paddle-shifts for faster manual control. “The new Z06 delivers levels of performance, technology and design that rival the most exotic supercars in the world,” said Mark Reuss, president, General Motors North America.
Buyers can also opt for a track-focused 'Z07' performance pack that adds upgraded Super Sport Cup tyres, Brembo carbon-ceramic brake discs and tweaked aerodynamic components. A carbonfibre aerodynamic package will also be available. The Z06 also features cosmetic and aerodynamic changes.
Interior upgrades, compared to the standard C7, include unique colour schemes and a flat-bottomed steering wheel. Two seat options will be offered, a conventional GT seat or a more aggressively bolstered 'Competition Sport' seat. Both feature magnesium frames, for weight-reduction purposes.