Historic Motor Sports Association

Car Classifications
Download PDF Rule Book

CLASS A

• A-1 1900-1926 SPORTS & RACING CARS
• A-2 1927-1939 SPORTS CARS
• A-3 1929-1939 RACING CARS
• A-4 1946-1954 GRAND PRIX CARS

CLASS B

• B-1 1947-1955 SPORTS CARS (GT)
• B-2 1947-1955 SPORTS RACING CARS UNDER 1500cc
• B-3 1947-1955 SPORTS RACING CARS OVER 1500cc

CLASS C

• C-1 1955-1960 SPORTS RACING CARS UNDER 2000cc
• C-2 1955-1959 SPORTS RACING CARS OVER 2000cc

CLASS D

• 1959-1965 SPORTS RACING CARS

CLASS E

• E-1 1958 - 1959 FORMULA JR. (Front Engined Fiat, Lancia)
• E-2 1959 - 1960 FORMULA JR. (Drum Brake cars)
• E-3 1961 - 1963 FORMULA JR. (Disc Brake Cars)
• E-4 1949 - 1963 FORMULA I - II
• E-5 1967 - 1980 FORMULA ATLANTIC

CLASS F

F-F 1967 - 1972 FORMULA FORD

CLASS G

• G-1 1955-1961 GT CARS UNDER 2000cc
• G-2 1956-1962 GT CARS OVER 2000cc
• G-3 1962-1965 GT CARS UNDER 2000cc
• G-4 1963-1965 GT CARS OVER 2000cc
• G-5 1967 - 1972 A SEDAN

CLASS H

• H-1 1964 - 1969 FIA MAKES CHAMPIONSHIP CARS
• H-2 1970 - 1983 FIA MAKES CHAMPIONSHIP CARS

CLASS I

• I-1 1973 - 1980 HISTORIC IMSA GT CARS
• I-2 1981 - 1989 HISTORIC IMSA GTP CARS

CLASS J

J-1 1966 - 1968 HISTORIC CAN-AM
J-2 1969 - 1974 HISTORIC CAN-AM

CLASS K

1967 - 1978 HISTORIC FORMULA ONE CARS

CLASS L

1966 - 1972 HISTORIC TRANS-AM

CLASS M

1968 - 1976 HISTORIC FORMULA 5000 CARS