Car Classifications
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| 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 |
| CLASS N |
| THRU - 1997 HISTORIC GRAND NATIONAL AND WINSTON CUP |
| CLASS O |
| 1980 - 1991 HISTORIC IMSA GTO - '80s TRANS-AM CARS |
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HMSA Spring Club Event
Mazda Raceway
Laguna Seca
March 23-24
37th Annual
Portland Historic Races
NEW DATE
June 27-30
Legends of Motorsports
Mazda Raceway
Laguna Seca
June 15-16
Sommet des Légendes
Le Circuit Mont Tremblant
July 11-14
16TH Annual Coronado Speed Festival
September 20-22
SANCTIONED BY HMSA
LSR Invitational
Mazda Raceway
Laguna Seca
April 9
LSR Invitational
Mazda Raceway
Laguna Seca
June 4-5
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