PORSCHE RACING HISTORYClemens Schickentanz (D)
1970 : Nürburgring 1000 km - 3rd in class
31 May 1970 - Nürburgring 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 911 S | GT+2.0 | Clemens Schickentanz (D)/Hans-Joachim Stuck (D) | Oldenkott Pipe and Tobacco Racing (D) | 16th | 3rd | 29th | 37 laps |
11 October 1970 - Zeltweg 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 44 | Porsche 911 | GT2.5 | Clemens Schickentanz (D)/Werner Zanders (D) | Peter Kersten (D) | DNF | 30th |