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A. J. Foyt driving a Championship Car in 1984. From 1956 to 1978, the United States Auto Club (USAC) sanctioned Championship Car class featured the top teams and drivers in U.S. open-wheel racing. Until 1971, races included road courses, ovals, dirt courses, and, on occasion, a hill climb. Thereafter, the schedule consisted mainly of paved ovals.
The existing USAC National Championship was a mixture of road courses, hill climbs and paved or dirt oval races. For the 1971 season this championship switched exclusively to paved ovals. Especially on the paved ovals rear-engined cars dominated the races whereas on the dirt ovals the front-engined cars were superior.
The USAC/CRA AMSOIL Sprint Car Series debuted in 2004 utilizing the same cars and 410ci engines that race in USAC's AMSOIL National Sprint Car Championship at dirt oval tracks across California and Arizona. The series also features combination races with the AMSOIL USAC Sprint Car National Championship. Champions
The USAC National Champion and Indianapolis 500 winner was Al Unser. After this season, dirt courses did not reappear in the USAC Championship until 1981-82. Road courses after this season did not reappear in the USAC Championship until 1977. The Pikes Peak Auto Hill Climb was the only non-championship event.
The 1972 USAC National Dirt Car Championship was the second season of the USAC National Dirt Car Championship. [1] The season champion was A .J. Foyt. Schedule and ...
For the majority of the national championship, the races have been held inside the United States. American championship cars raced at the Monza oval in 1957 and 1958 alongside Formula One and sports cars in the non-championship Race of Two Worlds. [16] Also, in 1966 there was a non-championship USAC race at Fuji Speedway in Japan.
A.J. Foyt ran his first national championship race there in August 1957. The track is host to two of the older memorial events in the United States, the Bettenhausen 100 for the USAC dirt championship cars, first run in 1961 and the Allen Crowe Memorial 100 stock car event for USAC, now ARCA, stock cars, first held in 1963. Both races are now ...
The 1962 USAC Championship Car season consisted of 13 races, beginning in Trenton, New Jersey on April 8 and concluding in Phoenix, Arizona on November 18. There was also one non-championship event at Pikes Peak, Colorado. The USAC National Champion and Indianapolis 500 winner was Rodger Ward.