PORSCHE RACING HISTORYHeinz Schiller (CH)
1964 : Nürburgring 1000 km - 3rd in class
31 May 1964 - Nürburgring 1000 km - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 65 | Porsche 904 GTS | 904-069 | GT2.0 | Jo Siffert (CH)/Heinz Schiller (CH) | Team Schiller (CH) | 8th | 3rd | 17th | 42 laps |
22 June 1964 - Le Mans 24 Hours - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 31 | Porsche 904 GTS | 904-006 | GT2.0 | Gerhard Koch (D)/Heinz Schiller (CH) | Porsche System Engineering (D) | 10th | 4th | 30th | 319 laps |
5 July 1964 - Reims 12 Hours - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 41 | Porsche 904 GTS | 904-022 | GT2.0 | Jo Siffert (CH)/Heinz Schiller (CH) | Heinz Schiller (CH) | DNF | 19th | Clutch |