Dodge Viper GTS-R
The 1998 Dodge Viper GTS-R is the race-homologated version of the Viper GTS coupe, developed by Dodge in collaboration with Oreca (Organisation de Courses Automobiles) in France to compete in international GT racing. The GTS-R program was extraordinarily successful, winning its class at the 24 Hours of Le Mans three consecutive times (1998, 1999, 2000) and claiming the FIA GT Championship.
Note: The GTS-R race car specification differed substantially from the road car. The road-going Viper GTS on which it was based produced 450 horsepower from its 8.0-liter V10, while the race car's engine was significantly modified. The homologation-special road cars featured a tuned version of the V10 producing approximately 460 horsepower with a revised intake and exhaust system.
The 7,990cc V10 engine was derived from a truck engine (the Chrysler/Dodge Magnum V10 used in Ram pickups), but extensively modified for performance applications. The pushrod OHV architecture was simple and robust, with enormous displacement compensating for the lack of multi-valve heads or overhead camshafts. The result was an engine with colossal low-end torque — over 490 lb-ft — that could overwhelm tires in any gear.
The GTS coupe body provided a more refined platform than the original Viper RT/10 roadster. The fixed roof added torsional rigidity, while the double-bubble roof design provided headroom for helmeted drivers in racing applications. The bodywork was styled by Tom Gale and his team at Chrysler, drawing inspiration from the classic Shelby Daytona Cobra coupe.
The chassis featured a tubular steel frame with composite body panels, independent suspension at all four corners using unequal-length double wishbones, and massive Brembo brakes. The six-speed manual transmission (by Tremec) was the only option, and it required a firm, deliberate shift action that matched the car's raw, uncompromising character.
Driving the Viper GTS-R-spec cars was an experience defined by extremes. The V10's torque was available instantly and in overwhelming quantities. The car demanded respect: there was no traction control, no stability control, and no ABS. The driver was responsible for managing all of the car's considerable capabilities through skill alone.
The GTS-R program brought credibility to the Viper that pure road car testing could never achieve. Victories at Le Mans, Daytona, Sebring, and the Nurburgring 24 Hours proved that the Viper was not merely a brutish straight-line weapon but a genuine, world-class racing car. The road cars that inspired and were inspired by this program remain among the most exciting Vipers ever produced.
Distinguish between a standard GTS, an ACR, and any genuine GTS-R homologation car. The V10 engine is robust but check for coolant leaks and overheating issues. The side exhaust system can deteriorate. Verify clutch condition as the heavy V10 is hard on clutches. Check for frame damage, especially in the front area. These cars are often driven hard — inspect for signs of track use and crash damage.
The Viper GTS was produced at Dodge's New Mack Assembly Plant in Detroit. The GTS-R race cars were prepared by Oreca in France. Road-going GTS models with ACR (American Club Racer) specification were the closest production equivalent.