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 National Dirt Car Championship (which would become the modern Silver Crown Series in 1981) was run over four races, and won by George Snider.
He alleged that the event had been boycotted by a number of drivers refusing to race at the outdated venue, which was torn down at the end of the year.
[1][2] Note 1: Donnie Allison, Carlos Pairetti, Denny Hulme, David Hobbs and Jim Hurtubise were not eligible for points.
His car was driven in the race by Dick Simon who started 33rd as a result of the driver change.