The 1971 Delaware 500 was a NASCAR Winston Cup Series race that took place on October 17, 1971, at Dover Downs International Speedway.

[5] All the racing action took place in the American community of Dover, Delaware with five hundred laps completed on a paved oval track spanning 1.000 mile or 1.609 kilometres.

[2][3] Richard Petty capitalizes for career win #137 as Bobby Allison's wheel troubles in the closing laps doom the dominant Holman-Moody entry.

[2][3] After a one-off with the Wood Brothers at Darlington that ended in a bad crash Lorenzen came back with his stint with Nichels here wasn't the best of times.

[2][3] The comeback deal was supposed to be for the rest of the season but it fell apart and he left again, this time for good, with David Pearson brought in to run Rockingham instead.