PORSCHE RACING HISTORYJim Busby (USA)
1976 : Daytona 24 Hours - 3rd overall : Laguna Seca 100 Miles II - 1st overall
1 February 1976 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA)/Hurley Haywood (USA) | Brumos Porsche (USA) | 3rd | 3rd | 28th | 530 laps |
20 March 1976 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA)/Carl Shafer (USA) | Brumos Porsche-Audi (USA) | 8th | 8th | 6th | 210 laps |
2 May 1976 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA) | Jim Busby (USA) | 5th | 5th | 6th | 51 laps |
10 July 1976 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 14 | Porsche 934 | 930 670 0173 | GT | Al Holbert (USA)/Jim Busby (USA) | Holbert/Dickinson (USA) | 16th | 6th | 9th | 134 laps |
3 October 1976 - Laguna Seca 100 Miles II - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 Carrera RSR | 911 560 9114 | GTO | Jim Busby (USA) | Busby Racing (USA) | 1st | 1st | 8th | 53 laps |