PORSCHE RACING HISTORYMonte Shelton (USA)
1978 : Trans-Am Mont-Tremblant - 1st overall
4 June 1978 - Trans-Am Westwood - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 935 | 930 770 0951 | TA-II | Monte Shelton (USA) | Monte's Motors (USA) | DNS |
11 June 1978 - Trans-Am Portland - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 935 | 930 770 0951 | TA-II | Monte Shelton (USA) | Monte's Motors (USA) | 19th | 7th | 3rd | 39 laps - Turbocharger |
25 June 1978 - Trans-Am Mont-Tremblant - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 935 | 930 770 0951 | TA-II | Monte Shelton (USA) | Monte's Motors (USA) | 1st | 1st | 1st | 38 laps |
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 13 | Porsche 935 | 930 670 0180 | Gr.5 | Hal Shaw, Jr. (USA)/Monte Shelton (USA) | Hal Shaw Racing (USA) | 4th | 4th | 8th | 136 laps |
19 August 1978 - Trans-Am Mosport - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 935 | 930 770 0951 | TA-II | Monte Shelton (USA) | Porsche+Audi Northwest (USA) | 4th | 4th | 4th | 39 laps |
8 October 1978 - Trans-Am Laguna Seca - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 935 | 930 770 0951 | TA-II | Monte Shelton (USA) | Porsche+Audi Northwest (USA) | 30th | 12th | 2nd | 34 laps - Engine |