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 success was marked by a victory at the Southern 500, where he was the only other car on the lead lap alongside Richard Petty.  He continued his successful part-time partnership with Johnson in 1967, leading every lap from pole position at North Wilkesboro Speedway.