Sunday 20th August 1978
Pole-starter David Pearson passed Darrell Waltrip on the final lap to win the Champion Spark Plug 400 at Michigan International Speedway, clinching the last of 43 wins with the legendary Wood Brothers team. Pearson, who led 56 of the 200 laps in a Mercury, then held off runner-up Cale Yarborough by .32 seconds at the finish as Waltrip faded to third. There were 34 lead changes, including three in the final six laps on the 2-mile oval.
