The Mazda 767/767B are prototype racing cars that were built by Mazdaspeed for the 24 Hours of Le Mans running under the IMSA-spec GTP class. The 767 replaced the 757 in 1988, upgrading to a newer and larger 4-rotor 13J Wankel engine which produced nearly 600 hp (450 kW).
Formula Atlantic is a specification of open-wheel racing car developed in the 1970s. It was used in professional racing through the IMSA Atlantic Championship until 2009 and is currently primarily used in amateur racing through Sports Car Club of America Formula Atlantic.
IMSA GT was a sports car racing series organized by International Motor Sports Association. Races took place primarily in the United States and occasionally in Canada.
The Chevrolet Corvette GTP was an American Grand Touring Prototype-class sports prototype racing car which successfully participated in the IMSA Camel GT from 1984 until 1989. The car was professionally fielded in competition as General Motors' Chevrolet Corvette C4 official factory team effort in the IMSA GTP class.
The Mazda RX-792P is a sports prototype racing car built for the IMSA GT Championship's GTP category for Mazda. Its career was short lived, with only two cars running in 1992 before the project was abandoned.
John Schneider is a former American sports car racing driver.
The Jaguar XJR-6 is a Group C sports prototype race car, designed, developed and built by TWR, with the aim of competing, from 1985, in the World Sportscar Championship. A total of six Jaguar XJR-6s were built and they contested in the World Sportscar Championship until 1986, before Jaguar replaced them with the Jaguar XJR-8.
The Lola T616 is a sports prototype built by Lola Cars to the Group C2 and IMSA GTP regulations. It was built with the intention to compete in the IMSA GT Championship and the World Sportscar Championship, and became the second Mazda-powered prototype to score a class win at the 24 Hours of Le Mans after the 717C triumphed in the same C2 class at the 1983 24 Hours of Le Mans.
The Rondeau M382 was a Group C prototype sports car, designed, developed and built by Automobiles Jean Rondeau in 1981, and used in sports car racing between 1982 and 1986.
The Mazda GTP is an IMSA GTP race car that was built by Pierre Honegger in 1981. Based on a Mazda RX-7, the car initially competed in the GTX category as the Mazda RX-7 GTP, before it was rebuilt for the IMSA GTP category in 1983. Throughout its career, the car used a Mazda 13B Wankel rotary engine, similar to that used in the production RX-7s. Although the rotary-engined sports prototypes generally had a reputation of being very reliable, the Mazda GTP frequently failed to finish races, and was never able to better the eighth place achieved at the 1983 24 Hours of Daytona. In 1986, one car was purchased by Erie Scientific Racing, and rebuilt to become the Badger BB. This car was no more successful or reliable than its predecessor, and was last used in 1989, by which point it was owned by Jack Engelhardt. The other car, meanwhile, was rebuilt by Honegger into the Denali Speedcar, which was used with moderate success in 1986 and 1987.
The Jaguar XJR-5 is a IMSA GTP sports prototype race car, designed, developed and built by Group 44 racing for Jaguar with the aim of competing, from 1982, in the IMSA GT Championship. Jaguar XJR-5s contested until 1985, before Jaguar replaced it with the Jaguar XJR-7.
The March 85G was a mid-engined IMSA racing sports prototype, designed and developed by March Engineering in 1984 and used in sports car racing until 1988.
The March 84G was a mid-engined Group C and IMSA racing sports prototype, designed and developed by March Engineering in late 1983 and used in sports car racing until 1989. It was powered by a number of different engines, including a Chevrolet small-block, a Buick V6, a Porsche flat-six, and even a Mazda 13B Wankel rotary engine. Power output was around 620 hp (460 kW). It only managed to score 5 wins, and clinch a total of 10 podium, over the course of 7 years and 119 race entries.
The Ford Probe GTP, also sometimes called the Ford Mustang Probe GTP, was an IMSA GTP sports racing car, designed, developed and built by German constructor Zakspeed, and used by the Zakspeed Racing team in the 1985 IMSA GT Championship. It was based on the standard road-going Ford Probe, and was the successor to the Ford Mustang GTP race car.. Unlike the road car, using a conventional front-engined designed, the prototype race car used a mid-engined design. It was powered by the same 2.1 L (130 cu in) turbocharged Cosworth BDA straight-four engine, producing 600 hp (450 kW), which was plenty powerful enough for the lightweight 1,770 lb (800 kg) vehicle. This drove the rear wheels through a five-speed Hewland VG5 manual transmission. Klaus Ludwig, Doc Bundy, Lyn St. James, Scott Pruett, Pete Halsmer, Arie Luyendyk, Tom Gloy, and Chip Robinson all drove the car. Highlights for the car included two second-place podium finishes at Watkins Glen and Sears Point in 1985, and an outright win for Klaus Ludwig at Laguna Seca in 1986.
The Alba AR6 was a Group C2 sports car prototype, designed, developed and built by Italian manufacturer Alba Engineering in 1985, to compete in the World Sportscar Championship, and used in sports car racing until 1990. A variant of the car, called the Alba AR8, was used in the IMSA GTP Championship.
The Argo JM16 is an IMSA GTP Lights sports prototype race car, designed, developed and built by Argo Racing Cars, in 1984. It competed in the IMSA GT Championship sports car racing series between 1984 and 1993. It, unfortunately, did not win any races, however, it did achieve 11 class victories, and one 3rd-place podium finish. It was powered by three different naturally aspirated engines; a Ford-Cosworth DFV Formula One engine, a Buick V6, and a Mazda 13B Wankel 2-rotor engine.
The Kudzu DG-1 is an IMSA GTP Lights sports prototype race car, designed, developed and built by American racing driver Jim Downing; making its debut in 1989. It competed in the IMSA GT Championship between 1989 and 1993. It was powered by either a Mazda 13B Wankel rotary engine, or a Buick V6 engine. Its best result was a 5th-place finish, and it achieved 4 class wins.
The March 82G is a IMSA GTP/Group C sports prototype race car, designed, developed and built by British manufacturer and constructor March Engineering, for sports car racing, in 1982. It competed in motor racing between 1982 and 1986, but only scored 1 race win, 8 podium finishes, and 2 pole positions. It was powered by a naturally-aspirated 620 hp (460 kW) 5.7 L (350 cu in) Chevrolet V8 engine.
The Alba AR3, and its derivative, the Alba AR3-001, were a series of ground effect IMSA GTP/Group C junior (C2) sports prototype race car, designed, developed and built by Italian manufacturer and constructor, Alba Engineering in 1984, and used in sports car racing until 1988. Its best result was two 4th-place finishes; first at Lime Rock in 1984, being driven by Gianpiero Moretti, and the second at Kyalami in 1987, being driven by Maurizio Gellini and Ranieri Randaccio. It was powered by a number of different engines, including a naturally-aspirated 4.5 L (270 cu in) Buick V6 engine, a turbocharged 4.0 L (240 cu in) Buick Indy V6 engine, a 1.3 L (79 cu in) Mazda 13B 2-rotor wankel rotary engine, a naturally-aspirated 3.0 L (180 cu in) Ford-Cosworth DFV Formula One engine, and a derived 3.3 L (200 cu in) Ford-Cosworth DFL.
The Spice SE90C is a Group C1 and Group C2 sports prototype race car, designed, developed, and built by British manufacturer, Spice Engineering, for sports car racing in the World Sportscar Championship and IMSA GTP Championship, in 1990.
