PORSCHE RACING HISTORYBob Bergstrom (USA)
1978 : Portland 100 Miles - 2nd in class
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 24 | Porsche 911 Carrera RSR | 911 460 9056 | GTX | Tom Frank (USA)/Bob Bergstrom (USA) | Executive Industries (USA) | 15th | 9th | 19th | 580 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 24 | Porsche 911 Carrera RSR | 911 460 9056 | GTX | Tom Frank (USA)/Bob Bergstrom (USA) | Executive Industries (USA) | 50th | 13th | 14th | 77 laps - Gearbox |
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 22 | Porsche 911 Carrera RSR | TA 2 | Jeffrey Stephens (USA)/Bob Bergstrom (USA) | Jeffrey Stephens (USA) | 30th | 15th | 41st | 76 laps - Electrical |
6 August 1978 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 22 | Porsche 911 Carrera RSR | GTO | Bob Bergstrom (USA) | Jeffrey Stephens | 9th | 2nd | 15th | 47 laps |