The Corvettes, Porsches and Vipers that compete in the SPEED World Challenge GT series are about to get some serious competition from a serious car – the Mercedes McLaren SLR 722 GT. The car was homolgated to World Challenge specs by The Racers Group (TRG) and our sources at the series tell us it will first see competition at the Autobahn County Club outside Chicago on July 24-26th.
Designed specifically to run it a spec series in Europe, the 722 GT is powered by a modified version of the supercharged 5.5-liter V8 and makes 680hp and 612 ft-lbs of torque. It also only weighs 3,200 lbs, meaning it can accelerate to 60 mph in just 3.3 seconds. Thanks to some serious aerodynamics and a significantly lowered ride height, the 722 GT is also capable of hitting 2 Gs in the corners.
No doubt the SCCA (the governing body for World Challenge) will level the playing field, forcing the SLR to either add weight or reduce horsepower… or probably both.
TRG Motorsports should still put on quite a show with the SLR as the team has plenty of racing experience, running cars in the Grand-Am Koni Challenge as well as in the Grand-Am Rolex Series. In 2005 and 2006 TRG competed with a Pontiac GTO.R team in the Grand-Am Rolex Series GT class, and has since been involved with a two-car Porsche effort in the GT Class.
See the Speed World Challenge series website for more info:
Follow the jump for all the specs on the McLaren SLR 722 GT
Mercedes-Benz SLR McLaren 722 GT Information
The Mercedes-Benz McLaren SLR 722 GT raises the bar for high-class motorsports. The idea of developing a racing version of the SLR came from motoring enthusiasts of the Mercedes Benz brand. Renowned British race car manufacturer Ray Mallock Limited Group (RML) in England modified +400 components of the production Coupe SLR to create this racing car version. Among the most significant modifications is a higher-output supercharged 5.5-litre V8 MB (AMG) engine producing 500 kW or 680 HP and a maximum torque of 830 Newton meters.
New body components such as the front apron with splitter, wider rear fenders, and a large rear diffusor, including the wing, reflect the extensive aerodynamic development work. New suspension and brakes allowing wider wheels, resulting in higher cornering speed. The interior of the SLR 722 GT is characterized by the functional atmosphere of a thoroughbred racing machine.
TRG Motorsports, in collaboration with RML, has further developed the car to to meet the sporting regulations to race professionally here in North America.
A limited number of cars can be delivered in the Spring / Summer 2009, from the TRG Motorsports facility located in Mooresville, North Carolina.
-Engine power: 680hp/500kW -Maximum torque: 830Nm @ 6200 rpm -Gear box: Newly (2009) fitted 6 gear sequential -0 to 100kph: 3.3 seconds -Top speed: 320 km/h -Maximum lateral G: 2.0g -Fuel tank capacity: 95 litres -Ride height adjustability: +/- 20mm from static -Ground clearance: 70 – 50mm -Dry weight: 1450kg -Overall dimensions: L = 4660mm, W = 1995mm, H =1210mm -Disc brakes: F Brembo six pot, 380 DIA. X35mm, R Brembo four pot,355 DIA. X28mm -Suspension: Fully adjustable double wishbone front and rear suspension -Rim size front and rear: 18” x 12” , 18” x 13” -Tire size front and rear: 30/65 – 18 S8D, 30/65 – 18 Comp A slicks -Wheelbase: 2700mm -Track width front and rear: 1660mm/1620mm