1983 Indianapolis 500 would go on to win four races during the season and finish second to Al Unser Sr. for the CART championship. The 1983 Indy 500 ushered in a new era of civility and stability in the sport of Indy car racing. After four years of conflict and organizational disputes between USAC and CART, the two sanctioning bodies came to an amicable truce. The Indianapolis 500 would be sanctioned singly by USAC, and officially would be part of the ceremonial Gold Crown. However, the race was now recognized on the CART schedule, and counted towards the 1983 CART PPG Indy Car
1997 Indianapolis 500 sanctioning the IRL and Indy 500, in favor of in-house officiating. The win by Arie Luyendyk marked the milestone 50th Indianapolis 500 victory for Firestone. It was Luyendyk's second Indy victory (he also won in 1990), as well as Scott Goodyear's second runner-up finish (1992). It was the third time in his career that Goodyear narrowly lost the Indy 500 in the closing stages. Luyendyk became the first driver since A. J. Foyt to win the race with both a turbocharged and a normally-aspirated engine. The 1997 race utilized the traditional three week / four weekend schedule that had been