CHEVROLET ENTERS THE WORLD OF
SUPERCARS WITH 2009 CORVETTE ZR1

FOR RELEASE: 2008-06-17

Corvette ZR1 By The Numbers

Chevrolet announces performance results and pricing for the new ultimate-performance Corvette

DETROIT – The official Corvette ZR1 numbers are in and they're good. Very good:

* $103,300 MSRP (including $850 destination charge)
* EPA-estimated fuel economy of 14 city and 20 highway
* 0-60 mph in 3.4 seconds
* 0-100 mph in 7.0 seconds
* Quarter-mile elapsed time of 11.3 seconds at 131 mph

The Corvette ZR1 also has a top speed of 205 mph (330 km/h), making it the fastest Corvette ever produced and ranking it among the global super cars of commensurate performance. None of those other super cars, however, equals the ZR1's performance-per-dollar ratio.

"The ZR1 is an incredible machine by any measure," said Ed Peper, North American Vice President, Chevrolet. "There's simply no other vehicle in the world that does a better job of balancing performance, price and fuel economy."

Performance perspective
The Corvette ZR1's 0-60 performance is 0.3-second quicker than the already-quick Corvette Z06 and the 0-100-mph performance is nearly a full second quicker - 7 seconds vs. the Z06's 7.9 seconds. It is performance that is equal to or better than many super cars costing substantially more.

"A favorable power-to-weight ratio gives the ZR1 an advantage over the competition and performance that has to be experienced to fully appreciate," said Tom Wallace, Corvette chief engineer. "Of course, on a racetrack, drivers of competitors' cars may appreciate the ZR1 in a whole different manner."

And the racetrack isn't the only place where the ZR1 trumps its super-car competitors – it beats them at the gas pump, too. According to fueleconomy.gov, the ZR1's EPA-rated 14 city and 20 highway mileage ratings beat 2008 competitors such as the Ferrari 599 GTB Fiorano (11 city / 15 highway); the Lamborghini Murcielago (8 city / 13 highway) and the Aston Martin V8 Vantage (12 city / 19 highway). They're competitive with the Dodge Viper (13 city / 22 highway) and the Porsche 911 GT3 (15 city / 22 highway).

Under the carbon-fiber hood
A new LS9 6.2L supercharged small-block engine powers the ZR1's performance capability. Heavy-duty and lightweight reciprocating components support high-rpm performance, while a new, sixth-generation supercharger (and complementing charge-cooling system) helps the LS9 make big power and torque across the rpm range. The engine is hand-assembled at GM's Performance Build Center, in Wixom, Mich.

In addition to the LS9 engine, the ZR1 is a technology powerhouse, designed with lightweight and unique components that reinforce its performance with a confidant feel on either a highway or road course.

Options
The standard ZR1 comes with accoutrements based on the Z06, including lightweight seats and lightweight content. The available uplevel interior package includes power-adjustable, heated and leather-trimmed sport seats (embroidered with the ZR1 logo); side air bags; Bose premium audio system; navigation system; Bluetooth connectivity; power telescoping steering column; custom leather-wrapped interior available in four colors and more. Chrome wheels are the only other available option on the ZR1. Detailed pricing noted below.

* $103,300 Base MSRP including destination
* $1,700 Gas guzzler tax
* $10,000 Option package
* $2,000 Chrome wheels

New, Supercharged LS9 V-8 is the Heart of the ZR1

DETROIT – Chevrolet officially announced the 2009 Corvette ZR1 – an American supercar that brings the technology and engineering refinement of carbon-fiber, ceramics and electronics together in a distinctive design.

“Chevrolet's goal with the new ZR1 is to show what an American supercar can deliver, at a price that trumps exotics that cost two, three or four times as much – and does so with exceptional driveability,” said Ed Peper, Chevrolet general manager.

The ZR1's basic stats:

The specialized components of the new ZR1 work harmoniously to deliver the most powerful and fastest automobile ever produced by General Motors. Performance estimates will be announced closer to vehicle's summer 2008 launch.

“Preliminary testing shows the ZR1 builds on the highly respected Corvette Z06 in every performance category, from acceleration and braking, to cornering grip and top speed,” said Peper. “It all boils down to the power-to-weight ratio and the ZR1's is exceptional – better than the Porsche 911 GT2, the Ferrari 599 and even the Lamborghini LP640. In fact, the ZR1 is expected to be the first production Corvette to achieve a top speed of at least 200 mph.”

Supercharged LS9 engine

The new LS9 6.2L small-block engine is the power plant the supports the 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. It is augmented with an integrated charge cooling system that reduces inlet air temperature for maximum performance.

A sixth-generation supercharger developed by Eaton 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. Heavy-duty and lightweight reciprocating components enable the engine's confident high-rpm performance.

The LS9 is hand-assembled at GM's Performance Build Center , in Wixom , Mich. , and incorporates specialty processes typically seen in racing engines to produce a highly refined and precise product. For example, cast iron cylinder liners are inserted in the aluminum block and are finish-bored and honed with a deck plate installed. The deck plate simulates the pressure and minute dimensional variances applied to the block when the cylinder heads are installed, ensuring a higher degree of accuracy that promotes maximum cylinder head sealing, piston ring fit and overall engine performance.

Transmission and axle

The LS9 engine is backed by a new, stronger six-speed manual transmission and a twin-disc clutch that provide exceptional clamping power, while maintaining an easy clutch 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.

As the term implies, the twin-disc clutch system employs a pair of discs, which spreads out the engine's torque load over a wider area. This enables tremendous clamping power when the clutch is engaged, while also helping to dissipate heat better and extend the life of the clutch.

The twin-disc clutch system also contributes to the ZR1's exceptional driving quality, with smooth and easy shifting. The twin-disc system's design enables a 25-percent reduction in inertia, thanks to smaller, 260-mm plates, corresponding to a pedal effort that is similar to the Corvette Z06's 290-mm single-disc system.

The rear axle also is stronger in the ZR1 and features asymmetrical axle-shaft diameters that were developed after careful testing to provide optimal torque management. The axles are also mounted on a more horizontal plane that correlates with the wider width of the rear wheels and tires.

Ride and handling

The ZR1 is built on the same aluminum-intensive chassis as the Corvette Z06 and features similar independent SLA front and rear suspensions, with aluminum upper and lower control arms. Where the ZR1 differs is the suspension tuning, which was optimized for the car's steamroller-wide front and rear tires.

Magnetic Selective Ride Control is standard and tuned specifically for the ZR1. The system's ability to deliver a compliant ride with nearly instantaneous damping adjustments enabled engineers to develop a surprisingly supple ride quality in a supercar that still delivers cornering grip of more than 1g.

From a high-performance perspective, Magnetic Selective Ride Control helps the rear axle remain planted during launch for smooth, hop-free acceleration. It also helps suppress axle movement when cornering on broken or uneven pavement.

Brakes, wheels and tires

Commensurate with the ZR1's engine output is the braking system, which is headlined by 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.

The vented and cross-drilled rotors on the ZR1 measure 15.5 inches (394 mm) in diameter in the front and 15 inches (380 mm) in diameter in the rear – making them among the largest carbon-ceramic rotors available on any production vehicle.

Clamping down on the high-tech rotors are six-piston front calipers and four-piston rear calipers, each painted a ZR1-exclusive blue. The front pads are equivalent in size to the largest on any production car with a single-pad design – double that of the Corvette Z06's 70-sq.-cm. front pads.

The brakes are visible through the ZR1's exclusive wheels: 20-spoke alloy rims that measure 19 inches in diameter in the front and 20 inches in the rear. They come standard with a bright, Sterling Silver paint finish and chrome versions are optional. The wheels are wrapped in Michelin Pilot Sport 2 tires developed specifically for the ZR1, measuring P285/30ZR19 in front and P335/25ZR20 in the rear.

Exclusive exterior

The ZR1 is instantly recognizable, with perhaps the most identifiable feature a raised, all-carbon-fiber hood that incorporates a clear, polycarbonate window. The window provides a view of the top of the engine's intercooler, with the legend “LS9 SUPERCHARGED” embossed on the left and right sides, and an engine cover with the Corvette crossed flags logo debossed at the front.

The underside of the hood has an exposed carbon-fiber-weave. Exposed carbon-fiber is used on the roof, roof bow, rocker molding and front splitter. These exterior components are protected by a specially developed glossy, UV-resistant clear coat that resists yellowing and wear.

Widened, carbon-fiber front fenders with specific, dual lower vents, and a full-width, body-color rear spoiler incorporating the center high-mounted stop lamp, are also unique to the ZR1. All of the exterior features of the car were developed to enhance high-speed stability and driver control.

Interior details
The ZR1's interior builds on the brand's dual-cockpit heritage, with high-quality materials, craftsmanship and functionality that support the premium-quality experience promised by the car's performance. The ZR1's cabin differs from the Corvette and Corvette Z06 with the following:

The “base” ZR1 (RPO 1LZ) comes with accoutrements based on the Z06, including lightweight seats and lightweight content. The uplevel interior package includes unique, power-adjustable and leather-trimmed sport seats (embroidered with the ZR1 logo); custom, leather-wrapped interior available in four colors; navigation system, Bluetooth connectivity and more.

By the numbers

In addition to the exterior cues and powertrain, ZR1 models will be distinguished from other Corvette models by their VIN. Each will carry a unique, identifying VIN digit, as well as a sequential build number. This makes it easy to determine the build number of a specific car – information treasured by enthusiasts and collectors. For example, a ZR1 with a VIN ending in “0150” would indicate it is the 150 th ZR1 built for the model year.

2009 CORVETTE ZR1 PRELIMINARY SPECIFICATIONS

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