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2002 HSV HRT 427 Concept

The 2002 HSV HRT 427 Concept was unveiled at the Sydney Motor Show as a closed-circuit racer, featuring a powerful 7-liter V8 racing engine based on the Le Mans-winning C5R Corvette powerplant. Here are the key details:

  • Engine: The V8 engine has a capacity of 427 cubic inches (7.0 liters), sharing its size with the legendary big block Chevy. Hand-built by HRT technicians, it incorporates unique piston and CNC cylinder head designs. The engine is equipped with eight individual throttle bodies with carbon fiber trumpets.

  • Performance: The engine produces an impressive 560 horsepower and 575 lb-ft of torque. The car accelerates from 0 to 60 mph in approximately 3.8 seconds, with a top speed of around 186 mph.

  • Transmission: Power is transmitted to the wheels via a special Tremec T56 six-speed manual gearbox, featuring the same lower ratios as the Corvette Z06. It includes triple synchros to reduce shift effort.

  • Brakes: Braking is handled by a race-bred AP Racing six-piston system with grooved discs. This setup ensures optimal stopping power on the track.

  • Suspension: The car features a double-wishbone front suspension with adjustable dampers, providing precise handling and control.

  • Weight Reduction: A strict weight reduction program was implemented to enhance performance, resulting in a curb weight of just 3472 lbs (1575 kg). Exotic materials such as carbon fiber and magnesium were used extensively to achieve this reduction.

Despite generating significant interest and securing 50 firm orders, Holden Special Vehicles (HSV) ultimately decided not to proceed with production due to economic constraints. The high cost associated with meeting safety and engineering standards at the limited production level of 50 vehicles made the project financially unviable. Consequently, the HSV HRT 427 Concept remained a one-off show car, showcasing HSV's engineering prowess and commitment to high-performance specialty cars.

Source & Images: HSV