The Race::1974 Dri-Power 400 motor race, the fifth annual Winchester 400 (run yearly since 1970), was held under American Speed Association National Tour sanction on September 29, 1974, at the Winchester Speedway, in Indiana (USA). Making his initial visit to the Winchester Speedway, Bob Senneker of Dorr, Michigan proved to be a quick learner as he scored the win in the fifth-annual Winchester 400. Defending race-winner Vern Schrock was the quickest of the 108 drivers who attempted to ear one of the 40 spots in the starting field. Starting from the pole, Schrock would lead the opening 70 laps before pitting for service and handing the lead to Tom Maier.