After eight years requiring riding mechanics, the AAA Contest Board reversed again and from then on the cars were single-seaters.

The AAA also loosened rules on the amount and type of fuel, leading to the entry of more exotic cars. The top spots, however, went to standard four-cylinder cars. Floyd Roberts was the winner and Wilbur Shaw came in second.

The only fatality in the race was a spectator in the infield, who was struck by a wheel when Emil Andres crashed in the second turn.