PORSCHE RACING HISTORYGary Belcher (USA)
1978
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 09 | Porsche 934 | 930 670 0175 | GTX | Gary Belcher (USA)/Doc Bundy (USA)/Al Holbert (USA) | Belcher Racing (USA) | 6th | 4th | 12th | 632 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 09 | Porsche 934 | 930 670 0175 | GTX | Gary Belcher (USA)/Doc Bundy (USA) | Belcher Racing (USA) | 40th | 8th | 74th | 115 laps - Mechanical |
5 November 1978 - Trans-Am Mexico - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9A | Porsche 934 | 930 670 0175 | TA-II | Gary Belcher (USA) | DNS | 7th |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 09 | Porsche 934 | 930 670 0175 | GTX | Gary Belcher (USA) | Belcher Racing (USA) | 46th | 16th | 23rd | 23 laps - Accident |