For the first time since 1952, time trials were pushed into a fifth day. Officials ruled that all 25 cars that were in the starting field at 6 p.m. Sunday (May 26) were "locked in" and could not be bumped. In addition, all cars that were in line to qualify Sunday evening at 7:54 p.m. were eligible to make one qualifying attempt on Monday. Only cars that qualified after 6 p.m. on Sunday evening were subject to bumping (including Puterbaugh and Cheesbourg).