Sports car racing is a form of motorsport road racing which utilises sports cars that have two seats and enclosed wheels. They may be purpose-built prototypes or grand tourers based on road-going models. Sports car racing is one of the main types of circuit auto racing, alongside open-wheel racing, touring car racing and stock car racing. Sports car races are often, though not always, endurance races that are run over particularly long distances or large amounts of time, resulting in a larger emphasis on the reliability and efficiency of the car and its drivers as opposed to outright car performance or driver skills. The FIA World Endurance Championship is an example of one of the best known sports car racing series.
The Lotus Esprit is a sports car built by Lotus Cars from 1976 to 2004 at their Hethel, England factory. It has a rear mid-engine, rear-wheel-drive layout. Together with the Lotus Elise / Exige, it is one of Lotus' most long-lived models.
The Porsche 930 is a turbocharged variant of the 911 model sports car manufactured by German automobile manufacturer Porsche between 1975 and 1989. It was the maker's top-of-the-range 911 model for its entire production duration and, at the time of its introduction, was the fastest production car available in Germany.
The Porsche 935 is a race car that was developed and manufactured by German automaker Porsche. Introduced in 1976 as the factory racing version of the 911 (930) Turbo and prepared for FIA-Group 5 rules, it was an evolution of the Carrera RSR 2.1 turbo prototype, the second place overall finisher in the 1974 24 Hours of Le Mans.
The Porsche 934 is a racing version of the Porsche 911 Turbo, prepared to FIA Group 4 rules, similar to the Porsche 935 which was prepared to FIA Group 5 rules.
The Porsche 962 is a sports prototype racing car designed and built by Porsche. Created to replace the Porsche 956, 962 was introduced at the end of 1984 and replaced the 956 in the IMSA's GTP class in 1985 due to regulation changes obsoleting the 956. It was also introduced in the World Sportscar Championship's Group C category in 1984. Over its decade-long career, the car in its Group C form won the 24 Hours of Le Mans twice, with a derivative of the car, the Dauer 962 Le Mans, winning a further title in 1994. In total, the 962 scored nineteen total constructor's championships across various series. The 962's successor was the Porsche WSC-95, introduced for the 1996 24 Hours of Le Mans, but did not receive factory backing or support.
The Porsche 936 is a Group 6 sports prototype racing car introduced in 1975 by Porsche as a delayed successor to the 917, a five-litre Group 5 Sports Car, and the 908, a three-litre Group 6 Prototype-Sports Car, both of which were retired by the factory after 1971. Its name came from using a variant of the Porsche 930's turbocharged engine, as well as competing in Group 6 racing.
The Porsche 908 was a racing car from Porsche, introduced in 1968 to continue the Porsche 906-Porsche 910-Porsche 907 series of models designed by Helmuth Bott (chassis) and Hans Mezger (engine) under the leadership of racing chief Ferdinand Piëch.
A Daytona Prototype was a type of sports prototype racing car developed specifically for the Grand American Road Racing Association's Rolex Sports Car Series as their top class of car, which replaced their main prototype racing class, specifically Le Mans Prototypes (LMPs). The cars later competed in the merged series of the IMSA SportsCar Championship, from 2014 to 2016, before being phased out and replaced by the Daytona Prototype International class in 2017. They are named after the main series event, the Rolex 24 at Daytona.
Peter Holden Gregg was an American race car driver during the golden age of the Trans-Am Series and a four-time winner of the 24 Hours of Daytona. He was also the owner of Brumos, a Jacksonville, Florida, car dealership and racing team.
The 1979 24 Hours of Le Mans was the 47th Grand Prix of Endurance, and took place on 9 and 10 June 1979. With no other major works cars this year, the Porsche team were the strong favourites to win. Their competition would be from Cosworth-powered Mirages and Rondeaus and a swarm of Group 5 and IMSA-class Porsche 935s. The other big talking point was the presence of Hollywood actor Paul Newman, driving for Dick Barbour Racing.
The 1976 24 Hours of Le Mans was the 44th Grand Prix of Endurance, and took place on 12 and 13 June 1976. This year the FIA introduced its new Group 5 and Group 6 regulations and the race was now open to nine distinct classes, although it was still not part of the World Championship seasons. Porsche introduced its new models, the 936 in Group 6, the 935 in Group 5 and the 934 in Group 4. In response, BMW had its modified 3.0 CSL in Group 5. It was the year that turbos arrived in considerable numbers, with over a dozen turbocharged entries, led by the Renault Alpine A442. It saw the arrival of French prototype manufacturers Jean Rondeau and Gérard Welter in a new GTP class and a first-time invitation to American IMSA and NASCAR entries.
Ludwig Heimrath Jr. is a Canadian businessman and former race car driver in open-wheel and sports-car racing.
Porsche has been successful in many branches of motorsport of which most have been in long-distance races.
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 Lola T600 was a racing car introduced in 1981 by Lola Cars as a customer chassis. It was the first GT prototype race car to incorporate ground-effect tunnels for downforce. The revolutionary aerodynamic design of the T600 was widely imitated throughout the 1980s by International Motor Sports Association (IMSA) and Group C prototype cars. The Lola T600 ran initially in the U.S.-based IMSA GT series and later in European Group C races.
The 1977 Trans-Am Series was the twelfth running of the Sports Car Club of America's premier series. Porsche swept the season. All races except for the Six Hours of Watkins Glen ran for approximately one hundred miles. With the revival of the Can Am Series that year, 1977 also began a resurgence of interest in SCCA events. Trans Am would contribute with a slight resurgence in the eighties.
The Porsche 911 is a two-door 2+2 high performance rear-engined sports car introduced in September 1964 by Porsche AG of Stuttgart, Germany. It has a rear-mounted flat-six engine and originally a torsion bar suspension. The car has been continuously enhanced through the years but the basic concept has remained unchanged. The engines were air-cooled until the introduction of the 996 series in 1998.
Ludwig Heimrath, also called Ludwig Heimrath Sr. was a German-born Canadian racing driver. He won the Trans-Am Series championship in 1977, becoming the first person born outside the United States to win the championship since Horst Kwech in 1966.
Grand Touring Experimental (GTX) is a former classification and set of regulations designated to grand touring cars and sports prototypes in sports car racing competing in the IMSA GT Championship, maintained by IMSA between 1977 and 1982. Some cars were based on FIA Group 5 rules; such as the Porsche 935, and some cars were based on FIA Group 6 regulations, such as the Lola T600. Like the original GTO class, the class rules specified turbocharging and supercharging was allowed on engines up to a size of 6.0 L (370 cu in); with engine design and number of cylinders being free and unrestricted. Engines over 6.0 L (370 cu in) were required to be naturally-aspirated.
