Donohue raced in seven of the eight races that year, winning six (at Las Vegas, Riverside, Bridgehampton, Watkins Glen, Pacific Raceways, and Mid-Ohio) and finishing third at the Laguna Seca Raceway round behind Lothar Motschenbacher and Mike Goth.
Donohue participou en sete das oito carreiras dese ano, gañando seis (en Las Vegas, Riverside, Bridgehampton, Watkins Glen, Pacific Raceways, e Mid-Ohio) e terminou en terceiro lugar na rolda de Laguna Seca Raceway detrás de Lothar Motschenbacher e Mike Goth.