|Category||IMSA GTP & Group C|
|Suspension (front)||Double wishbones, coil-over dampers|
|Suspension (rear)||Double wishbones, coil-over dampers|
|Engine|| Chevy 6,000 cc (366.1 cu in), mid-mounted, NA pushrod V8 |
Cosworth DFL, 3,298 cc (201.3 cu in), mid-mounted, NA DOHC V8
Porsche, mid-mounted, Turbo Flat 6
|Transmission||Hewland 5 speed manual|
|Notable entrants||Cooke-Woods Racing|
|Notable drivers|| Brian Redman |
John Paul Jr.
|Debut||1981 IMSA Camel GT Round #5, Laguna Seca|
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.
A total of 12 chassis were built. 
At the end of the 1980 season, it seemed that the Porsche 935 Turbo would continue to dominate the International Motor Sports Association (IMSA) Championship. Fearing that fans would lose interest in a series dominated by a single marque, IMSA officials announced the new Grand Touring Prototype category. The GTP category was also consistent with the FIA's plan to introduce a prototype formula to the World Endurance Championship in 1982 (Group C), superseding production-based "silhouette" cars like the Porsche 935.
Brian Redman asked for Lola Cars to develop a GTP spec racer based on a T70 chassis, fitted with a new bodywork and a Chevy 6.0L V8 engine developing around 600 bhp. Lola's Eric Broadley, however, wanted a new chassis and bodywork developed specifically for the new IMSA GTP regulations. He hired aerodynamicist Max Sardou to design a ground effects underbody for the car. Cooke-Woods Racing were the first customer and also helped develop the car.
Cooke-Woods Racing entered chassis #HU01 for the fifth race of 1981 season, at Laguna Seca, with Redman driving. The team achieved victory in its debut race, followed by wins at Lime Rock, Mid Ohio, Portland and Road Atlanta. The car proved extremely reliable, winning the IMSA title and knocking Porsche from the top of the championship standings for the first time since 1977. Lola Cars sold 11 additional T600s on the strength of this performance. Among the drivers fielding T600s were Chris Cord and John Paul Jr. (chassis #HU04 and #HU05), though neither achieved the success of Cooke-Woods effort.
Cooke-Woods Racing became Cooke Racing after Roy Woods and Redman left the team and never again approached its dominant form of 1981. J.L.P. Racing and Cord Racing returned, while additional Lolas from Interscope appeared in the grid, raced by Danny Ongais, Ted Field and Bill Whittington. Interscope won four races but John Paul Jr. took the Championship driving both a T600 and Porsche 935s, scoring one of his seven victories in the Lola. Field finished second in standings. 
Ted Field fitted a 700 hp Chevrolet V6 3.4L turbo engine in one of the Interscope T600s, which proved to be a fast but unreliable combination. Other Lolas fielded by John Kalagian and Conte Racing employed the ubiquitous Chevy V8, while Bayside Racing installed a Porsche 935 turbo engine in their T600. Newer GTP designs from March and Jaguar, however, eclipsed the aging Lola. T600s scored a handful of podium finishes, but its days as a front-running chassis were numbered. 
Largely reduced to the role of grid filler, Lola T600s occasionally posted top-ten finishes, powered variously by engines from Chevy, Ford and Porsche, but the design proved too outdated to be competitive. A T600 appeared for the last time at an IMSA race in 1987. 
The Porsche 935 was a race car 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.
Brian Herman Thomas Redman, is a retired British racing driver.
The Porsche 962 is a sports-prototype racing car built by Porsche as a replacement for the 956 and designed mainly to comply with IMSA's GTP regulations, although it would later compete in the European Group C formula as the 956 had. The 962 was introduced at the end of 1984, from which it quickly became successful through private owners while having a remarkably long-lived career, with some examples still proving competitive into the mid-1990s. The vehicle was later replaced by the Porsche WSC-95.
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 is 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 WeatherTech SportsCar Championship, from 2014-2016, 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.
The 1982 24 Hours of Le Mans was the 50th Grand Prix of Endurance, which took place on 19 and 20 June 1982. It was also the fourth round of the 1982 World Endurance Championship. As well as a significant anniversary, this was a watershed year for Le Mans, with the highly anticipated advent of the FIA's Group C regulations, the essence of which was to allow an open engine formula but a minimum weight for safety and a proscribed fuel allocation.
The 1981 24 Hours of Le Mans was the 49th Grand Prix of Endurance, and took place on 13 and 14 June 1981. It was also the eighth round of the World Endurance Championship of Drivers, and the fifth round of the World Championship for Makes.
The 1980 24 Hours of Le Mans was the 48th Grand Prix of Endurance, and took place on 14 and 15 June 1980. It was the seventh round of both the World Championship for Makes and World Challenge for Endurance Drivers. With neither the Porsche nor Renault works teams contesting the big Group 6 sports-cars for outright victory, it left the prospects open for a privateer victory from Joest, Rondeau or De Cadenet, or from Group 5 again, if they were to fail. The wet weather throughout the race further added to the uncertainty, reducing the advantage of the more powerful cars.
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 1978 24 Hours of Le Mans was the 46th Grand Prix of Endurance, and took place on 10 and 11 June 1978. In many ways it was a continuation of the race from the year before – the two main protagonists would be the very evenly-matched works teams of Alpine-Renault and Porsche, with four cars each. The race was not valid for any championship.
The 1977 24 Hours of Le Mans was the 45th Grand Prix of Endurance, and took place on 11 and 12 June 1977. The second year of the FIA Group 5 and Group 6 regulations, it produced an exciting race right up to the end. Porsche had withdrawn from the Group 6 Championship, citing a lack of broad competition. Renault, before their move into Formula 1, decided to put its main racing focus for the year onto Le Mans. The two works teams were the pre-race favourites.
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.
Group 5 was an FIA motor racing classification which was applied to four distinct categories during the years 1966 to 1982. Initially Group 5 regulations defined a Special Touring Car category and from 1970 to 1971 the classification was applied to limited production Sports Cars restricted to 5 litre engine capacity. The Group 5 Sports Car category was redefined in 1972 to exclude the minimum production requirement and limit engine capacity to 3 litres. From 1976 to 1982 Group 5 was for Special Production Cars, a liberal silhouette formula based on homologated production vehicles.
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 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 Nissan GTP ZX-Turbo was a series of racing cars developed for Nissan Motors by Electramotive Engineering to compete in the IMSA GT Championship. Running from 1985 to 1990, they were known for being the first car to defeat the Porsche 962 which had dominated IMSA's premiere GTP category. This led to Nissan winning the constructor's championship and 12 Hours of Sebring in 1989 and 1990. During 1990, the GTP ZX-Turbo was replaced by the newer NPT-90.
The Nissan NPT-90 was a racing car developed in 1990 for Nissan Motors by Nissan Performance Technology Incorporated (NPTI), formerly known as Electramotive Engineering. It was a replacement for the highly successful GTP ZX-Turbo that had won the IMSA GT Championship in 1989. The NPT-90 would go on to win the championship in 1990 and 1991 before being retired by Nissan at the end of the 1992 season.
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 Porsche 963 is an LMDh sports prototype racing car designed by Porsche and built by Multimatic, to compete in the Hypercar and GTP classes in the FIA World Endurance Championship and IMSA SportsCar Championship, respectively. The 963 name draws inspiration from the Porsche 956 and Porsche 962 that raced in the 1980s, which also competed in American and European racing series. The car was revealed at the 2022 Goodwood Festival of Speed, with a traditional red, white, and black livery.