Assertion: stock car's engine | /r/ObjectUse | used with modification
Facets:
value: since 1979
type: TEMPORAL
Source sentences:
text: In 2003 the category replaced the Chevrolet 6-cylinder engine used with modifications since 1979 with a Chevrolet V8 imported from the United States by JL Racing, similar to the engines used by the NASCAR Busch Series.