PORSCHE RACING HISTORYBob Copeman (USA)
1980
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | GTO | Warwick Henderson (USA)/Bob Copeman (USA)/John Humphreys (USA) | Tortilla Flats Racing (USA) | 32nd | 12th | 61st | 166 laps |
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 49 | Porsche 911 Carrera RSR | 12803002 | GTO | Bob Copeman (USA)/M. L. Speer (USA) | Tortilla Flats Racing (USA) | 20th | 8th | 52nd | 138 laps |
4 May 1980 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 49 | Porsche 911 Carrera RSR | 12803002 | GTO | Bob Copeman (USA) | Tortilla Flats Racing (USA) | 22nd | 13th | 26th | 33 laps - DNF |
27 July 1980 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 49 | Porsche 911 Carrera RSR | 12803002 | GTO | Bob Copeman (USA) | Tortilla Flats Racing (USA) | 20th | 9th | 19th | 11 laps - DNF |