| Date | Place |
Division |
Start |
Finish | Owner |
# |
Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 6 1972 | Daytona International Speedway | FIA World Sports Car Championship | 26 | 6 | Hugh Kleinpeter | 56 | Lola T212 Ford | 166 | running | ||
| Mar 25 1972 | Sebring International Raceway | FIA World Sports Car Championship | 16 | 22 | Promotional Advertising Corp. | 56 | Lola T212 Ford | 167 | running | ||
| Feb 2 1975 | Daytona International Speedway | IMSA GT/World Sports Car Championship | 55 | 56 | Brandt Doell | 52 | Porsche 911S | 0 | 0 | did not start | 0 |
| Mar 22 1975 | Sebring International Raceway | IMSA GT | 58 | 50 | Doell Enterprises | 63 | Porsche 911 | 53 | did not finish | ||
| Jun 1 1975 | Nürburgring | FIA World Sports Car Championship | 53 | 51 | Gante Racing | 62 | Porsche Carrera RSR | 6 | did not finish | ||
| Jun 15 1975 | Circuit de la Sarthe | ACO | 37 | 51 | Gante Racing | 57 | Porsche Carrera RSR 911 460 0002 | 16 | oil leak | ||
| Jun 13 1976 | Circuit de la Sarthe | ACO | 46 | 14 | Tom Vaugh | 77 | Porsche Carrera RS | 284 | running | ||
| Feb 6 1977 | Daytona International Speedway | IMSA GT/World Sports Car Championship | 52 | 23 | Tom Waugh | 50 | AMC Hornet | 394 | running | ||
| Mar 11 1979 | Texas World Speedway | USAC Stock Car | 20 | 6 | 42 | AMC Matador | 123 | 1,700 | running | 0 | |
| Nov 11 1979 | Texas World Speedway | USAC Stock Car | 16 | 22 | 42 | AMC Matador | 46 | 530 | engine | 0 | |
| Jul 2 1981 | Daytona International Speedway | IMSA/WSCC Champion Spark Plug Challenge | 2 | 2 | Downing Maffucci Racing | 63 | Mazda RX-3 | 152 | running | ||
| Jan 31 1982 | Daytona International Speedway | IMSA GT | 36 | 14 | Downing/Atlanta | 63 | Mazda RX-7 | 590 | running | ||
| Mar 20 1982 | Sebring International Raceway | IMSA GT | 29 | 13 | Jim Downing | 63 | Mazda RX-7 | 209 | running | ||
| Feb 3 1985 | Daytona International Speedway | IMSA GT | 52 | 11 | Mandeville Auto-Tech | 53 | Mazda RX-7 | 599 | running | ||
| Mar 23 1985 | Sebring International Raceway | IMSA GT | 32 | 13 | Mandeville Auto Tech | 53 | Mazda RX-7 | 218 | did not finish | ||
| Apr 28 1985 | Riverside International Raceway | IMSA GT | 43 | 18 | Mandeville Auto Tech | 53 | Mazda RX-7 | 99 | running | ||
| Aug 25 1985 | Road America | IMSA GT | 40 | 39 | Mandeville Auto Tech | 53 | Mazda RX-7 | 44 | did not finish |