Pratt & Miller Engineering Introduces Corvette C6RS Supercar for the Street Championship-Winning Race Team Develops the Ultimate Performance Corvette for the Highway

NEW HUDSON, Mich., Oct. 30, 2007 - Pratt & Miller Engineering has designed and developed a new limited edition Corvette C6RS that provides an exceptional level of performance and refinement for enthusiasts. Inspired by the Le Mans-winning Corvette C6.R race cars, the new Pratt & Miller Corvette C6RS supercar combines advanced racing technology with everyday driveability. The first production Corvette C6RS will be available in April 2008.

Powered by a Katech Performance 8.2-liter (500ci) all-aluminum
small-block V-8 engine that produces 600 horsepower and 600 lb.-ft.
torque, the Pratt & Miller Corvette C6RS employs a purpose-built
carbon fiber body to reduce weight and improve aerodynamic efficiency. A
computer-controlled adjustable suspension system, center-nut forged
aluminum BBS wheels with Michelin tires, and massive Brembo monoblock
disc brakes enhance vehicle dynamics. A two-tone leather interior and a
comprehensive sound control system produce a quiet, comfortable
environment for driver and passenger.

"Our goal was to create a Corvette supercar that delivers an
extremely high level of performance with extraordinary comfort and
reliability," said Gary Pratt, co-owner of Pratt & Miller Engineering. "The
Corvette C6RS was inspired by our Corvette race program, but it's not a race
car for the street. You can take the Corvette C6RS on a 300-mile road
trip, or drive it to a track day and run fast laps."

Conceived, designed, developed and constructed by the
championship-winning Pratt & Miller team, the Corvette C6RS bristles
with sophisticated materials and race-inspired technology. The
aggressively styled lightweight body, made entirely of carbon fiber,
measures 1.6 inches wider than a production Corvette Z06. The carbon
fiber front fascia has integrated brake ducts and ram air induction.
Aerodynamic enhancements include functional front fender louvers, a
carbon fiber underwing and rear diffuser, enlarged front wheel vents
and rear brake ducts, an integrated rear spoiler, and a front splitter.

"Every body modification has a purpose," Pratt explained. "The
features were modeled on the C6.R race cars, and there are no nonfunctional
styling elements."

The C6RS chassis is upgraded to complement the improved aerodynamic
grip. A Dynamic Ride Height Control suspension system provides three
driver-adjustable settings: Low, Drive and High. In the Low mode, the
system lowers the ride height to improve handling, while the High
setting increases ground clearance to negotiate steep driveways and
ramps. The suspension is upgraded with Pratt & Miller-tuned dampers
and heavy-duty wheel hubs and bearings.

The same manufacturers who supply tires, wheels, and brakes for the
Corvette C6.R race cars also provide the rolling stock for the Pratt &
Miller C6RS. The street car's BBS forged aluminum wheels (18 x
11-inch front, 19 x 13.6-inch rear) have racing-style center nuts. The
stunning black chrome wheels are wrapped in Michelin Pilot Sport tires
(P295/30-18 front and P345/30-19 rear). The Brembo Grand Tourismo
brake system delivers impressive stopping power with six-piston monoblock
front calipers with 14-inch rotors and four-piston monoblock rear
calipers with 13.5-inch rotors.

With 600 horsepower on tap, the 8.2-liter C6RS engine rivals the
performance of the restricted 7.0-liter engines that powered the C6.R
race cars to five GT class victories in the 24 Hours of Le Mans and
seven consecutive American Le Mans Series championships. Developed by
engine partner Katech Performance, the 500ci small-block V-8 is based
on a high-strength 6061-T6 billet aluminum Dart block with linerless
Nicom-coated 4.205-inch diameter cylinder bores. The rotating
assembly features a forged steel crankshaft (4.500-inch stroke), forged 4340
steel connecting rods, and 11:1 compression forged aluminum pistons.
The custom-built CORSA stainless steel exhaust system employs the company's
patented Reflective Sound Cancellation(tm) (RSC) technology to optimize
interior and exterior sound quality. An aluminum flywheel and twin-disc
clutch transfer the engine's torque to a blueprinted T56 six-speed
transmission.

A luxurious interior is the counterpoint to the Corvette C6RS's cutting
edge technology. A Dynamat sound insulation system produces a quiet
refuge, while the instrument panel, doors, console, steering wheel
and seats are wrapped in premium quality leather with French seams.
"Our goal with the Corvette C6RS was to capture the soul and spirit
of the Corvette C6.R race car in a premium GT car for the street," said
Pratt. "The C6RS is a car with a legendary racing heritage and an
unrivalled engineering pedigree. Just as the Corvette C6.R race car has
become the benchmark in production-based sports car competition, we
believe that the Pratt & Miller Corvette C6RS will set the new standard
for sports car performance and luxury on the highway."

Founded in 1989 by Gary Pratt and Jim Miller, Pratt & Miller Engineering
& Fabrication provides automotive and non-automotive clients with
leading-edge engineering and low-volume manufacturingsolutions. For
more information, visit the Pratt & Miller website at
www.prattmiller.com.

The (as of now) one-off machine boasts a wider rear end than the Z06 by two inches. And even though the body is made completely of carbon fiber, the C6RS is the same weight as the Z06 due to the addition of about 140 pounds of sound deadening material which makes the car, Kip says "quiet as a Mercedes" on the inside.

One feature that didn't make it onto Jay's version of the E85-powered Corvette was a retractable spoiler that would raise up at higher speeds, a la the Porsche 911, but Kip said he and his team just didn't have enough time to get it done. He did say that feature might show up on the next generation.

Kip also hinted at a possible drop-top version, much to the chagrin of at least one of us, who argued that it just wasn't right to make a convertible out of a super-Vette that really belongs at the track.

GREEN AND MEAN: JAY LENO'S E85-CAPABLE Z06-INSPIRED C6RS CORVETTE BOASTS 600 HP AND ALTERNATIVE-FUEL CAPABILITY

LAS VEGAS - "Tonight Show" host Jay Leno's predilection for performance cars is no secret, but many fellow enthusiasts may not know that he is keenly interested in alternative fuels. To prove that red-blooded power mixes easily with a touch of green, Leno partnered with Pratt & Miller - the engineering company that builds and campaigns C6.R Corvettes - to develop a modified Corvette Z06 that is capable of running on E85 ethanol. It was unveiled at the 2007 SEMA Show.

More than merely a conversion of the stock LS7 engine to E85 capability, Leno's alternative-fuel supercar is powered by a custom, 8.2L (500-cubic-inch) all-aluminum small-block V-8 that pumps out approximately 600 horsepower and 585 lb.-ft. of torque.

"The C6RS is the result of an idea we hatched to prove that high-performance cars and alternative fuel technology weren't diametrically opposed concepts," said Leno. "I love the idea of having 600 horsepower at my disposal, but using a homegrown alternative to gasoline."

The engine is built around a custom aluminum cylinder block that was CNC-milled from a single block of billet aluminum. And while the cylinder heads, intake system and dry-sump oiling system are stock LS7 components, the engine - which has larger bore and stroke dimensions than the 7.0L (427-cubic-inch) LS7 - uses a one-off reciprocating assembly, including a forged steel crankshaft, forged rods and forged pistons. Katech Engines, the company that builds engines for the Corvette C6.R racing program, developed the engine.

The fuel system and engine control computer were modified to accommodate E85, and spent gases exit through a Corsa exhaust system. Supporting the 600-horse engine's power is a blueprinted and strengthened T-56 six-speed transmission and a high-performance Centerforce dual-friction clutch.

C6.R inspiration
On the outside, Leno's bad and black C6RS emulates the styling of C6.R racecars, with wider front and rear fenders and a wider rear fascia with an integrated spoiler on top and a racing-style diffuser at the bottom (the diffuser incorporates an LED-lit backup lamp). A C6.R-style waterfall hood front fender louvers, rockers and lower grille opening further define this special Corvette - and all of the car's front-end panels are made of carbon-fiber, including custom brake air ducts routed through the front fenders. With all of its body modifications, Leno's C6RS is 1.6 inches wider than stock.

The C6.R's - and production Corvette's - aerodynamically styled bodywork is designed to slice efficiently through the wind, which helps enhance fuel mileage.

The race-ready look of the car is enhanced with a quartet of BBS wheels that feature racing-type locking center hubs. The forged aluminum 18-inch front wheels and 19-inch rear wheels ride on Michelin P295/30ZR18 and P345/30ZR19 tires, respectively.

Adding authenticity to the car's custom bodywork was the involvement of Pratt & Miller. The company took on the task of crafting Leno's Corvette into a street-going replica of the racecars, which included installing or fabricating a host of unique components, including:
• A custom DeWitt high-capacity radiator with dual cooling fans
• A carbon-fiber ram-air induction system
• Carbon-fiber inner fender panels that vent hot air from the engine compartment
• Brembo brakes with six-piston mono-block calipers in front and four-piston rear calipers
• Dyna-Mat used throughout the cabin and chassis to reduce interior noise

While the exterior and drivetrain were inspired by the racetrack, the C6RS's cabin exudes luxury, with premium touches and enhancements from Genuine Corvette Accessories that include a two-tone shift knob and boot; leather-covered console armrest, parking brake handle and boot; an interior trim kit, racing-style pedal covers and more.

With its 600 horses on tap and domestically produced E85 fuel in the tank, Jay Leno's alternative-fueled C6RS is an all-American supercar that proves high performance and environmental consciousness go together like the Corvette and checkered flags.

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