1977 Indianapolis 500 1977 Indianapolis 500 The 61st International 500 Mile Sweepstakes was held at the Indianapolis Motor Speedway in Speedway, Indiana on Sunday, May 29, 1977. Considered one of the most historically significant editions of the Indianapolis 500, several sidebar stories complemented the unprecedented accomplishment of race winner A. J. Foyt. Foyt became the first driver to win the Indianapolis 500 four times. As of 2017, Foyt's record has been tied by Al Unser Sr. and Rick Mears, but still stands as an Indy record. Foyt's victory is also the last time the winning car (both chassis and engine) was built entirely
1981 Indianapolis 500 1981 Indianapolis 500 The 65th Indianapolis 500 was held at the Indianapolis Motor Speedway in Speedway, Indiana on Sunday, May 24, 1981. The race is widely considered one of the most controversial races in Indy history. Bobby Unser took the checkered flag as the winner, with Mario Andretti second. After the conclusion of the race, USAC officials ruled that Unser had passed cars illegally while exiting the pit area during a caution on lap 149. Unser was subsequently issued a one-position penalty. The next morning, the official race results were posted, and Unser was dropped to second place. Mario Andretti