Gunn started his racing career by announcing races at Williams Grove Speedway and when Roy Richwine stepped down as general manager, Gunn took over the promotion of the track, turning it into one of the finest half mile tracks in the country.
Gunn was involved in racing for over 30 years and even had his own auto racing radio and TV show.
Gunn formed the KARS Sprint car circuit in Pennsylvania and produced racing events at Hagerstown, MD, Selinsgrove, PA in addition to Williams Grove.
Gunn was named Promoter of the Year in 1979. He passed away in 1980 due to cancer.