Speed also started six races in the NASCAR Busch Series between 1983 and 1984. He only made one start in 1983, at Charlotte in the Miller Time 300, where he finished sixth. In 1984, Speed lost by two feet to Darrell Waltrip in the season opening Goody's 300 at Daytona, and scored another top five in the Mello Yello 300 at Charlotte. Speed's worst qualifying effort was a 13th place start in the season opener. Speed's starts were fifth at Darlington, seventh at Charlotte, third at Darlington and ninth at Charlotte.