The 1990 AC Delco 500 was the 27th stock car race of the 1990 NASCAR Winston Cup Series season and the 26th iteration of the event.

At race's end, owner-driver Alan Kulwicki would manage to dominate the late stages of the race to take his second career NASCAR Winston Cup Series victory and his only victory of the season.

[5] North Carolina Speedway was opened as a flat, one-mile oval on October 31, 1965.

In 1969, the track was extensively reconfigured to a high-banked, D-shaped oval just over one mile in length.

Ken Schrader, driving for Hendrick Motorsports, would win the pole, setting a time of 24.769 and an average speed of 147.817 miles per hour (237.888 km/h) in the first round.