0 car in 1966. Dieringer's biggest triumph was that year, as he claimed the Southern 500 with the only other car on the lead lap being Richard Petty. Dieringer continued a dominating part-time schedule with Johnson in 1967, leading every lap form the pole at North Wilkesboro Speedway.
In 1966, Dieringer's most significant achievement was winning the Southern 500, the only other car on the lead lap being Richard Petty.  He continued his dominant part-time schedule with Johnson in 1967, leading every lap from pole position at North Wilkesboro Speedway.