PORSCHE RACING HISTORYJack Swanson (USA)
1979
4 July 1979 - Daytona Paul Revere 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 911 | GTU | Fred Snow (USA)/Jack Swanson (USA)/Tom Cripe (USA) | 31st | 12th | 45th | 43 laps - DNF |
25 November 1979 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 911 | GTU | Fred Snow (USA)/Jack Swanson (USA) | 42nd | 16th | 63rd | 31 laps - DNF |