PORSCHE RACING HISTORY1977 - Mugello 6 Hours
20 March 1977 - Autodromo del Mugello, Italy
Rolf Stommelen & Manfred Schurti win in a Porsche 935
Overall - 1st, 2nd, 3rd : Gr.5 - 1st, 2nd, 3rd : GT - 1st, 2nd, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 935 | 935-002 | Gr.5 | Rolf Stommelen (D)/Manfred Schurti (FL) | Martini Racing (D) | 1st | 1st | 2nd | 161 laps |
| 5 | Porsche 935 | 930 770 0902 | Gr.5 | Martino Finotto (I)/Carlo Facetti (I)/Romeo Camathias (CH) | Jolly Club (I) | 2nd | 2nd | 4th | 155 laps |
| 26 | Porsche 935 | 930 770 0906 | Gr.5 | "Victor" Vittorio Coggiola (I)/Piero Monticone (I) | "Victor" (I) | 3rd | 3rd | 5th | 154 laps |
| 18 | Porsche 934 | 930 670 0157 | GT | Arturo Merzario (I)/Giuseppe Bianco (I) | Jolly Club (I) | 4th | 1st | 6th | 149 laps |
| 14 | Porsche 911 Carrera RSR | GT | "Amphicar" Eugenio Renna (I)/Luigi Moreschi (I) | Ateneo | 5th | 2nd | 7th | 147 laps | |
| 38 | Porsche 911 Carrera RSR | GT | Klaus Utz (D)/Rolf Blind (D) | Hahn Sportwagen (D) | 6th | 3rd | 10th | 145 laps | |
| 7 | Porsche 934 | 930 670 0171 | GT | Claude Haldi (CH)/Laurent Ferrier (F) | Schiller Racing Team (CH) | 7th | 4th | 8th | 144 laps |
| 24 | Porsche 911 Carrera RSR | GT | Guido Agazzotti Cavazza (I)/Roberto Nardini (I) | Guido Agazzotti Cavazza | 10th | 6th | 20th | 134 laps | |
| 22 | Porsche 911 S | GT | Odoardo Govoni (I)/Vincenzo Angelelli (I) | Odoardo Govoni | 11th | 7th | 18th | 129 laps | |
| 27 | Porsche 911 Carrera | GT | Franco Berruto (I)/Mario Radicella (I) | Franco Berruto | DNF | 21st | 103 laps | ||
| 11 | Porsche 934 | 930 670 0169 | GT | Girolama Capra (I)/Gabriele Gottifredi (I) | Gabriele Capoferri (I) | DNF | 13th | 77 laps | |
| 3 | Porsche 935 | 930 770 0903 | Gr.5 | Bob Wollek (F)/John Fitzpatrick (GB) | Porsche Kremer Racing (D) | DNF | 3rd | 64 laps - Accident | |
| 1 | Porsche 935/77 | 935-004 | Gr.5 | Jochen Mass (B)/Jürgen Barth (D) | Martini Racing (D) | DNF | 1st | 63 laps - Accident | |
| 12 | Porsche 911 Carrera RSR | Gr.5 | Carlo Rebai (I)/Duilio Ghislotti (I) | Gabriele Capoferri | DNF | 14th | 2 laps - Engine |
World Championship for Makes
Previous 1977 - Sebring 12 Hours Next 1977 - DRM Nürburgring 300 Km