Power for the Z06 comes from Chevy's new supercharged 6.2-litre 'LT4' V8
This is the fourth time the Z06 name has been used. It also appeared on C2, C5 and C6 models
Performance is likely to be close to the 205mph ZR1
The new Z06 is a high-performance version of Chevrolet's Corvette C7 Stingray
The supercharged 6.2-litre V8 is claimed to produce "at least" 625bhp and 635lb ft
The new Z06 was unveiled at the Detroit motor show, alongside the C7.R
Options include an eight-speed automatic transmission and a carbonfibre aero kit
Carbon-ceramic brakes are part of the optional Z07 performance package
A cutaway model on the stand revealed some of the Corvette's inner details
The Z06 badge first appeared in 1963, on a Corvette C2
This new C7 Z06 is the first of its kind to feature a supercharged engine
The standard gearbox is a seven-speed manual
Its new LT4 engine benefits from race-spec features, including a dry sump system and forged aluminium pistons
The C7 Z06 features electrically adjustable suspension and double-wishbone suspension all round
A low-profile supercharger helps keep overall engine height down
The 6.2-litre engine also benefits from variable valve timing and direct fuel injection
Lightweight materials, include aluminium and carbonfibre, are used throughout the Z06
In classic Corvette fashion, the Z06 relies on tried-and-tested transverse composite leaf springs
Interior upgrades include a 'sports' flat-bottomed steering wheel
Chevrolet claims the Corvette's new eight-speed automatic transmission can perform flat-out shifts faster than Porsche's PDK
Exact pricing and performance details have yet to be announced
A choice of sports seats will be offered...
... including a conventional 'GT' seat and a more aggressive 'Competition Sport' seat
Buyers can also opt for a carbonfibre aero kit, as seen pictured here
The 'Z07' performance pack adds upgraded tyres, carbon-ceramic brake discs and tweaked aerodynamic components
Body alterations on the Z06, compared to the stock C7, include flared arches and larger vents
Chevrolet has confirmed that its upcoming Corvette C7 Z06 will feature a supercharged V8 producing 650bhp and 650lb ft.
The Corvette Z06, 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 consequently the most powerful production car ever made by General Motors. Previously, it was thought the Z06 would produce in the region of 625bhp.
An upgraded version of the standard C7 Corvette, the Z06 moniker first appeared on the C2 generation of the car in 1963. It was followed, decades later, by the C5 Z06 and C6 Z06.
This generation of Z06, however, is the first with a removable roof, optional eight-speed automatic transmission and - more notably - a supercharged V8 engine. Chevrolet says the massive torque coming from the engine is 28 per cent more than that offered by the V12-powered Ferrari F12 Berlinetta.
The company says that, at idle, the engine is still producing 625lb ft of torque, and is able to maintain up to 90 per cent of available torque between 2500-5400rpm. 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 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, improving its handling characteristics.
Chevrolet is yet to announce any official performance statistics for the C7 Z06, but it's likely that it'll perform in a similar fashion to the 638bhp ZR1, which accelerates from 0-60mph in 3.4sec and can reach a top speed of 205mph.
No official fuel consumption figures have been released either, but the use of cylinder deactivation should help the Z06 return acceptable figures. The standard naturally aspirated C7 is currently claimed to average 28mpg, while the outgoing supercharged ZR1 returns 19.2mpg.
In classic Corvette style, the Z06 retains the C7's standard transverse-mounted composite springs, while magnetorheological 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 seven speed features active rev matching, like that found on Nissan's 370Z.
The eight-speed gearbox is a new addition to the Corvette range, and benefits from wheel-mounted paddle-shifts for faster manual control. According to Chevrolet, the torque-convertor-based automatic can "deliver shift performance that rivals the dual-clutch/semi-automatic transmissions found in many super cars".
The company claims, for example, that its eight speed can perform full-throttle upshifts up to eight-hundredths of a second quicker than that of Porsche's PDK.
“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.
“It leverages the engineering expertise of GM, offering the choice of two world-class transmissions, supercar performance without supercar fuel consumption and technologies that make it easier to fully enjoy the incredible experience of driving it.”
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. Tom Peters, Corvette design director, said: “The flared arches accommodate larger, wider wheels and tyres for more grip.
"Larger vents provide more cooling air to the engine, brakes, transmission and differential for increased track capability. The more aggressive aerodynamic package generates true downforce for more cornering grip and high-speed stability.”
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.
According to Chevrolet, the new Z06 is reputed to deliver "faster lap times" than the outgoing range-topping 2013 Corvette ZR1 - a car capable of lapping the Nürburgring in 7:19.63, quicker than many more costly rivals.
Pricing and exact performance data is yet to be announced for the new car; the entry-level Corvette C7 costs £31,614 in the US, while the outgoing high-performance C6 ZR1 costs £68,831.