1978 | Abandono | 94 | Porsche 935/77 A Turbo | Don Whittington/Bill Whittington/Franz Konrad |
1979 | 1º | 41 | Porsche 935 K3 | Klaus Ludwig/Don Whittington/Bill Whittington |
1981 | Abandono | 59 | Porsche 935 K3 | Bill Whittington/Don Whittington/Ted Field |
1982 | Abandono | 5 | Porsche CK5 | Ted Field/Danny Ongais/Bill Whittington |