Adcox's primary claim to fame was for being a strong competitor in ARCA competition, a lesser stockcar series that uses older Winston Cup cars and more grassroots-based operations. He was especially dominant on the superspeedways; he won a record four of them in 1986 and had eight total superspeedway triumphs in his career, with five victories coming at Talladega. Dale Earnhardt, in an interview before a 1989 race at North Carolina Motor Speedway, remarked about how well Adcox had done in ARCA and said that if he had the monetary backing that other teams had, he might become a success in NASCAR.
