C Sports Racer (CSR) now known as Prototype 1 (P1) is a class in the Sports Car Club of America. it consists of open top prototype style cars. The maximum displacement is 1615cc, in a 2 valve crossflow engine, with a minimum weight of 1300lbs w/driver. Two cycle or 4 valve/4 cycle motors between 850cc and 1300cc are permitted with a minimum weight of 1200lbs. Supercharging and turbocharging are permitted within limits, and with a maximum displacement of 765cc. Some CSRs are Formula Atlantic or Formula SCCA cars converted by adding bodywork to the chassis. [1]
| Year | Driver | Car | Engine |
|---|---|---|---|
| C Modified | |||
| 1954 | | Ferrari 4.5 | |
| 1955 | | Ferrari/Jaguar D-Type | |
| 1956 | | Jaguar D-Type | |
| 1957 | | Jaguar D-Type | |
| 1958 | | Lister | Jaguar |
| 1959 | | Lister | Jaguar |
| 1960 | | Chevrolet Corvette | Chevrolet |
| 1961 | | Lister | Chevrolet |
| 1962 | | Chaparral I | Chevrolet |
| 1963 | | Chaparral I | Chevrolet |
| 1964 | | Huffaker Genie Mk. 10 | Ford |
| 1965 | | McLaren-Elva | |
| C Sports Racer | |||
| 1966 | | McKee | Oldsmobile |
| 1967 | | Lola | Chevrolet |
| 1968 | | Lotus 23 | Ford |
| 1969 | | Lotus 23B | Ford |
| 1970 | | Lotus 23B | Ford |
| 1971 | | Gardner | Alfa Romeo |
| 1972 | | Royale | Ford |
| 1973 | | Arachnid | Ford |
| 1974 | | Arachnid 3 | Ford |
| 1975 | | Bobsy SR6 | Ford |
| 1976 | | Bobsy SR6 | Ford |
| 1977 | | Lola T498 | Ford |
| 1978 | | Wynnfurst Lola | |
| 1979 | | Tiga | Ford |
| 1980 | | Lola T496 | Ford |
| 1981 | | Tiga SC81 | Ford |
| 1982 | | Argo JM4 Ocelot | Volkswagen |
| 1983 | | Tracer TR2 | Ford |
| 1984 | | Tracer TR2 | Ford |
| 1985 | | Tracer TR2 | Volkswagen |
| 1986 | | Bease Decker 2 | |
| 1987 | | Tracer TR2 | Ford |
| 1988 | | Tracer TR2 | Ford |
| 1989 | | Tracer TR2 | Ford |
| 1990 | | Tracer TR2 | Ford |
| 1991 | | Tracer TR2 | Ford |
| 1992 | | Tracer TR2 | Ford |
| 1993 | | Tracer TR2 | Ford |
| 1994 | | Toyota | |
| 1995 | | Pratt & Miller RM2 | |
| 1996 | | Wynnfurst | |
| 1997 | | Tracer TR2 | Ford |
| 1998 | | Beasley B2 | |
| 1999 | | Beasley B2 | |
| 2000 | | Beasley B2 | |
| 2001 | | Beasley B7 | |
| 2002 | | Beasley B7 | |
| 2003 | | Ralt | |
| 2004 | | Swift Viking | Toyota |
| 2005 | | Swift Viking | Toyota |
| 2006 | | Swift 014.a | Toyota |
| 2007 | | Swift 014.a | Toyota |
| 2008 | | Stohr WF1 | Suzuki |
| 2009 | | Élan DP02 | Mazda |
| 2010 | | Ralt RT41 | Toyota |
| 2011 | | Ralt RT41 | Toyota |
| 2012 | | Ralt RT41 | Toyota |
| 2013 | | Stohr WF1 | Suzuki |
| Prototype 1 | |||
| 2014 | | Stohr WF1 | Suzuki |
| 2015 | | Stohr WF1 | Suzuki |
| 2016 | | Norma M20-FC | Honda |
| 2017 | | Stohr WF1 | Suzuki |
| 2018 | | Norma M20-FC | Honda |
| 2019 | | Élan DP02 | Mazda |
| 2020 | | Swift 014 | Toyota |
| 2021 | | Stohr WF1 | Suzuki |
| 2022 | | Elan | Mazda |
| 2023 | | Élan DP02 | Mazda |
| 2024 | | Élan DP02 | Mazda |