PORSCHE RACING HISTORY1976 - Zandvoort International Group 2, 4 and 5
29 August 1976 - Circuit van Zandvoort, Netherlands
Cees Siewertsen 2nd in a Porsche 934, behind the winning BMW 3.0 CSL driven by Bernard Carlier
Overall - 2nd : +2000 - 2nd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 70 | Porsche 934 | 930 670 0540 | +2000 | Cees Siewertsen (NL) | Porsche Kannacher Krefeld/Wildcat Jeans (D) | 2nd | 2nd | 13 laps | |
| 75 | Porsche 934 | 930 670 0161 | +2000 | Nicolas Koob (L) | 4th | 4th | 13 laps |
Non Championship Race
Previous 1976 - Interserie Hockenheim Preis der Nationen Next 1976 - Dijon 6 Hours