The 1975 Gwyn Staley 400 was a Winston Cup Series (now Nextel Cup) event held at North Wilkesboro Speedway on April 6, 1975. Richard Petty won his third straight race, leading 311 of 400 laps and beating Cale Yarborough by more than three laps. Despite being early in the season, Petty had a massive 235-point championship lead on Cecil Gordon (9th). Stats