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Dwight Clock · 4/8/08, 12:41 PM

In 1971 the dirt cars, until then part of the "Championship Trail", were called the National Dirt Car Championship. In 1981 that changed to the Silver Crown division.

4/8/08, 12:41 PM	#10 Re: Can USAC Copyright "Champ Car"?
Dwight Clock Senior Member Join Date: Jul 2007 Posts: 1,233	In 1971 the dirt cars, until then part of the "Championship Trail", were called the National Dirt Car Championship. In 1981 that changed to the Silver Crown division.