1977 Champion Spark Plug 400

Michigan International Speedway is a four-turn superspeedway that is 2 miles (3.2 km) long.

While Cale Yarborough and Darrell Waltrip would duel for the lead during the opening laps of this racing event, Waltrip would battle against Benny Parsons for supremacy during the closing laps.

Waltrip defeated David Pearson by two car lengths in front of an audience of 35,000.

[2] After this race, Cale Yarborough and Richard Petty would be within 50 points of each other; both gunning for a championship.

[5] Terry Ryan would retire from NASCAR Cup Series racing after this event, finishing in 9th place.