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Pontiac's 2006 Grand American Rolex Sports Car Series championship-winning GTO.R has been retired. In its place, the G6 GXP.R is set to compete in the 2007 series, where it will rub fenders with the best and brightest from BMW and Porsche.

The tube chassis racer is built to Grand America GT class specs and equipped with an LS2 pushrod V8, making upwards of 450 HP and sending power to the rear wheels. Although the exterior is a dead ringer for the production G6, most of the body panels have been replaced with carbon-fiber pieces.

Expect the GXP.R to make its debut at the Rolex 24 Hours of Daytona later this year.

The full press release is posted after the jump.

For our comprehensive listing of everything from Detroit, click here.



DETROIT – Pontiac unveiled the GXP.R racecar, which will compete in the GT class of the 2007 Grand American Rolex Sports Car Series presented by Crown Royal Special Reserve. The GXP.R hits the track running later this month at the famed Rolex 24 Hours of Daytona race in Florida.

With the bodywork inspired by the Pontiac G6 GXP Street edition coupe, the GXP.R is the next step in the evolution of a successful racing program that began with the purpose-built GTO.R. The GTO.R was retired after winning the 2006 GT championship; the new GXP.R is built on the same winning foundation as the GTO.R.

"The GXP.R begins the next chapter in a very successful racing campaign that has put Pontiac over Porsche and BMW in the highly competitive GT class," said John Larson, Pontiac general manager. "The GXP.R promises to pick up the GTO.R's momentum and carry it into another winning season."

Built to the specifications of the Grand American GT class, the GXP.R features a rear-drive layout and a racing version of the LS2 V-8 engine that produces approximately 450 horsepower (335 kW). It is based on the same Gen IV V-8 engine design as found in the production Grand Prix GXP. The production G6 GXP is powered by a sophisticated, DOHC 3.6L V-6 with variable valve timing that produces approximately 252 horsepower (188 kW).

The GXP.R's bodywork retains the silhouette of a production G6 GXP, but lightweight, carbon-fiber replica panels are used throughout to reduce overall mass. The stock window glass also is replaced with lighter, shatter-resistant polycarbonate pieces. The body panels are attached to a custom tube-frame chassis, with the front and rear fenders flared to cover the wide, 18-inch wheels and class-spec Hoosier racing tires. Also, a huge rear wing that provides stabilizing downforce is tied into the chassis. It's not a production-model wing, but the G6 GXP street car has its own distinctive rear spoiler.

Production-based racing
The Grand American GT class is comprised of production-based coupes and sedans that are modified for racing. Many of the engine components must be the same as those found on production models. The tube-frame chassis and ground-hugging bodywork are used to ensure high-speed traction and stability, while a purposeful interior deletes amenities such as air conditioning and an MP3-capable radio for a crisscross of safety roll cage tubing, a single racing seat, racing instruments and other race-only accoutrements.

Grand American Racing's racing series, which also includes the Daytona Prototype class, was founded in 1999 with the goal of reinvigorating American road racing. Pontiac models were campaigned in the GT class from its inception, and the GTO.R program was launched in 2005. In their first full season of competition, two GTO.R teams dominated the 2006 season. With eight wins, including a podium sweep at Phoenix , Pontiac clinched its first GT Manufacturers championship, and the No. 65 TRG/F1 Air GTO.R of Andy Lally and Marc Bunting took the GT Drivers and Team championship. The No. 64 TRG GTO.R of Paul Edward and Kelly Collins finished third in points. The remainder of the class's top 10 finishers included five Porsche GT3 Cups, a BMW M3 and a Chevy Corvette. During the 2005 and 2006 seasons, the GTO.R amassed an impressive 19 consecutive podium finishes – a class record.

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    • 1 Second Ago
      • 8 Years Ago
      I wish they would make a LS2 RWD G6 available to the public. That would be a fun car!

      I guess I will have to wait for the G8 :)
      • 8 Years Ago
      What was totally inaccurate? I said "do" not "did". Yes, I know BMW HAD the V8 in the ALMS version of the M3 and ALMS pretty much kicked them to the curb for it. Other wise Pontiac's competition races cars that are based on cars that really exist.

      And yeah, where the hell would Porsche put an "8" in the 911? And what point are you trying to make?
      • 8 Years Ago
      BMW and Porsche do not have to have totally different drivetrian configurations in their race cars.
      That is a totally inaccurate statement: BMW has had an "Eight" in the previous gen M3 racing for a number of years, no more successful than the "Six".

      Where the hell would Porsche put an "8" in the 911?

      This car is a Solara fighter at best, doesn't need to be RWD. Chicks will dig the GXP. It like the Solara is a chick car.
      • 8 Years Ago
      LS2 V-8? Is that a Corvette engine? If so, then how is the GXP.R coupe any different from a racing version of the Corvette?

      Anyway, I like the idea of a GXP version of the G6 and Grand Prix. It's a step in the right direction. But it's going to need a 300HP V6 and some serious suspension tweaks if they want to steal sales from cars like the BMW 335 Coupe or Ford Mustang. Or how about a 400HP version of the Grand Prix/G8 with AWD to compete with the Audi RS4 and upcoming V8 version of the BMW M3?

      Pontiac used to sell serious performance cars in the 60s and 70s. They need more than GXP if they are serious about "excitement." We want a streent version of the GXP.R.
      • 8 Years Ago
      If you haven't noticed, none of the cars racing these days are anywhere near a dealer sold car in the Rolex series, or just about any other. There are a few exceptions, but not many. I would love for some real "Stock car" racing, but that won't happen, and the closest thing there is is the old Trans Am Series classics going around.
      • 8 Years Ago
      Hmmm...production based. Did I miss the announcement that I should be able to get a RWD G6 at my local Pontiac dealership sometime soon? Whatever happened to race on Sunday, sell on Monday?

      • 8 Years Ago
      Like the Cadillac and GTO race cars did anything to raise people's views of the cars they were based on. Still, I like this.