PORSCHE RACING HISTORY935
1983
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 03 | Porsche 935 | GTP | Angelo Pallavicini (CH)/Werner Frank (USA) | Angelo Pallavicini (CH) | 74th | 17th | 28th | 24 laps - Engine |
27 February 1983 - GP Miami IMSA GTO - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 935 | 930 770 0958 | GTO | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 2nd | 2nd | 4th | 34 laps |
1 May 1983 - Trans-Am Moroso - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 6th | 21st | 44 laps |
3 July 1983 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 935 | GTP | Robert Gottfried (USA)/Jack Refenning (USA) | 15th | 7th | 13th | 57 laps |
31 July 1983 - Trans-Am Road America - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 4th | 9th | 25 laps |