PORSCHE RACING HISTORYHans Heyer (D)
1979 : Silverstone 6 Hours - 1st overall
6 May 1979 - Silverstone 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 935/77A | 930 890 0011 | Gr.5 | John Fitzpatrick (GB)/Hans Heyer (D)/Bob Wollek (F) | Gelo Sportswear Team (D) | 1st | 1st | 2nd | 229 laps |
10 June 1979 - Le Mans 24 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 36 | Porsche 935/77A | 930 890 0015 | Gr.5+2.0 | Manfred Schurti (FL)/Hans Heyer (D) | Gelo Sportswear International (D) | DNF | 4th | 201 laps - Engine |