PORSCHE RACING HISTORYLambert Hofer (A)
1970 : Interserie Norisring - 3rd in class : Zeltweg 1000 km - 2nd in class
28 June 1970 - Interserie Norisring - Interserie
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 55 | Porsche 910 | 910-001 | SRP2.0 | Lambert Hofer (A) | Bosch Racing Team | 12th | 3rd | 21st | 71 laps |
11 October 1970 - Zeltweg 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 24 | Porsche 910 | 910-001 | S2.0 | Lambert Hofer (A)/Werner Riedl (A) | Bosch Racing Team | 10th | 2nd | 16th | 146 laps |