PORSCHE RACING HISTORYGary Belcher (USA)
1979 : Sebring 12 Hours - 3rd overall
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 935 | 930 770 0959 | GTX | Bob Garretson (USA)/Gary Belcher (USA)/Bob Bondurant (USA) | Dick Barbour Racing (USA) | 3rd | 3rd | 7th | 235 laps |
22 April 1979 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 4 | Porsche 935 | 930 770 0959 | GTX | Skeeter McKitterick (USA)/Bob Garretson (USA)/Gary Belcher (USA) | Dick Barbour Racing (USA) | 9th | 7th | 12th | 179 laps |
7 July 1979 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 13 | Porsche 935 | 930 670 0180 | TA-II | Hal Shaw, Jr. (USA)/Gary Belcher (USA) | Hal Shaw Racing (USA) | 23rd | 9th | 17th | 120 laps - Pit Fire |