The 1991 Heinz Southern 500 was a Winston Cup (now Nextel Cup) event held at Darlington Raceway on September 1, 1991. Harry Gant dominated the event, leading the most laps in route to an eleven-second victory on Ernie Irvan. Points leader Dale Earnhardt finished 8th and kept an 89-point championship lead on Ricky Rudd (15th). Stats