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Jeff Stoops. Official website. www .usacracing .com. The United States Auto Club ( USAC) is one of the sanctioning bodies of auto racing in the United States. From 1956 to 1979, USAC sanctioned the United States National Championship, and from 1956 to 1997 the organization sanctioned the Indianapolis 500.
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.
Dirt track racing is the single most common form of auto racing in the United States. According to the National Speedway Directory, there are over 700 dirt oval tracks in operation in the US. [ 1] The composition of the dirt on tracks has an effect on the amount of grip available. Many tracks use clay with a specific mixture of dirt.
List of USAC Championship Car seasons. 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 1971 USAC Championship Car season consisted of 12 races, beginning in Rafaela, Argentina on February 28 and concluding in Avondale, Arizona on October 23. The USAC National Champion was Joe Leonard and the Indianapolis 500 winner was Al Unser. For 1971 it was decided that there should be three separate points championships, for paved ovals ...
Length. 1 miles (1.6 km) Turns. 4. Race lap record. 31.805 ( Sheldon Creed, Toyota Camry, 2018, Stock car) DuQuoin State Fairgrounds Racetrack is a one-mile (1.6-km) clay oval motor racetrack in Du Quoin, Illinois, about 90 miles (140 km) southeast of St Louis, Missouri. It is a stop on the ARCA Menards Series, USAC Silver Crown Series and ...
1968 USAC Championship Car season. The 1968 USAC Championship Car season consisted of 28 races, beginning in Hanford, California on March 17 and concluding in Riverside, California on December 7. The USAC National Champion and Indianapolis 500 winner was Bobby Unser. Mike Spence died in an accident while practicing for the 1968 Indianapolis 500.
1982–83 →. The 1981–82 USAC Championship Car season consisted of six races, beginning in Speedway, Indiana, on May 24, 1981, and concluding at the same location on May 30, 1982. The USAC National Champion was George Snider. The season included two Indianapolis 500 races. The 1981 winner was Bobby Unser, while the 1982 winner was Gordon ...