this lap. Lap 40: Clyde Lynn overheated his racing vehicle. Lap 72: The rear end came loose off Buddy Arrington's vehicle. Lap 125: Richard Brickhouse was involved in an accident off turn two. Lap 147: A two-car accident brought out a caution that lasted until lap 156. Lap 168: Cale Yarborough was involved in an accident off turn two. Lap 183: James Hylton blew his vehicle's engine off turn one. Lap 195: Buddy Young was involved in an accident off turn four. Lap 239: The wheel bearing came loose off Dub Simpson's vehicle. Lap 283: Charlie Glotzbach blew his vehicle's engine off turn three. Lap 304: Elmo Langley's brakes stopped working on this lap. Lap 313: The water pumps on Earl Brooks' vehicle ceased functioning. Lap 388: The suspension on E.J. Trivette's vehicle stopped working properly. Lap 391: The timing chain came loose off of Bobby Isaac's vehicle. Finish: LeeRoy Yarbrough was officially declared the winner of the race. References American 500 American 500 NASCAR races at Rockingham Speedway