PORSCHE RACING HISTORY908/03
1977
28 August 1977 - Interserie Nürburgring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 908/03 Turbo | 908/03-008 | Div.I | Reinhold Jöst (D) | Joest Racing Team (D) | 3rd | 2nd | 70 laps | |
| 17 | Porsche 908/03 | 908/03-012 | Div.I | Jürgen Barth (D) | 4th | 3rd | 70 laps |
18 September 1977 - Interserie Ulm - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 908/03 Turbo | 908/03-008 | Div.I | Reinhold Jöst (D) | Joest Racing Team (D) | 1st | 1st | 30 laps |
9 October 1977 - Interserie Hockenheim - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 908/03 Turbo | 908/03-008 | Div.I | Reinhold Jöst (D) | Joest Racing Team (D) | 3rd | 3rd | 22 laps | |
| 5 | Porsche 908/03 | 908/03-012 | Div.I | Jürgen Barth (D) | Jürgen Barth (D) | DNF |