PORSCHE RACING HISTORYTom Ashby (USA)
1979
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 42 | Porsche 911 S | 119 220 830 | GTU | Tom Ashby (USA)/Bill Bean (USA)/Bob Beasley (USA) | Bullwinkele Racing, Inc. | 20th | 8th | 45th | 493 laps |
2 September 1979 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 42 | Porsche 911 S | 119 220 830 | GTU | Tom Ashby (USA)/Bill Bean (USA) | Bullwinkele Racing | 15th | 5th | 28th | 109 laps |