PORSCHE RACING HISTORYTom Ashby (USA)
1978 : Daytona 250 Miles Paul Revere - 2nd in class
18 June 1978 - Brainerd 100 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) | 19th | 4th | 29th | 29 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - 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) | Tom Ashby | 10th | 2nd | 30th | 61 laps |
26 November 1978 - Daytona Finale 250 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 | 26th | 4th | 40th | 55 laps |