PORSCHE RACING HISTORY1981 - Silverstone 6 Hours
10 May 1981 - Silverstone Circuit, United Kingdom
Harald Grohs, Walter Röhrl & Dieter Schornstein win in a Porsche 935 J
Overall - 1st, 3rd : Gr.5 - 1st, 2nd : S+2.0 - 1st : GTX - 2nd : GT - 1st, 2nd, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 22 | Porsche 935 J | 000 00016 | Gr.5 | Harald Grohs (D)/Walter Röhrl (D)/Dieter Schornstein (D) | Vegla Racing Team (D) | 1st | 1st | 10th | 206 laps |
| 7 | Porsche 908/03 Turbo | 908/03-013 | S+2.0 | Siegfried Brunn (D)/Eddie Jordan (IRL) | Siegfried Brunn (D) | 3rd | 1st | 5th | 204 laps |
| 24 | Porsche 935 K3 | 009 0003 | Gr.5 | Edgar Dören (D)/Jürgen Lässig (D) | Wera Meissberg Team (D) | 5th | 2nd | 9th | 200 laps |
| 39 | Porsche 935 K3 | 009 00016 | GTX | Bob Akin (USA)/Bobby Rahal (USA)/Pete Lovett (GB) | Bob Akin Motor Racing Inc. (USA) | 6th | 2nd | 4th | 199 laps |
| 33 | Porsche 924 Carrera GTR | GT | Peter Zbinden (CH)/Edi Kofel (CH)/Marco Vanoli (CH) | Formelrennsport Club Zurich (CH) | 9th | 1st | 27th | 194 laps | |
| 25 | Porsche 935 | 930 770 0912 | Gr.5 | Jacques Guérin (F)/Christian Bussi (F)/Jean-Pierre Delaunay (F) | Jacques Guerin (F) | 10th | 4th | 26th | 192 laps |
| 32 | Porsche 924 Carrera GTR | GT | Richard Lloyd (GB)/Tony Dron (GB) | Canon Cameras Racing with GTi Eng. (GB) | 11th | 2nd | 24th | 186 laps | |
| 31 | Porsche 934 | 930 670 0178 | GT | Angelo Pallavicini (CH)/Neil Crang (AUS) | Angelo Pallavicini (CH) | 14th | 3rd | 33rd | 181 laps |
| 58 | Porsche 935 L1 | 935 L1 | Gr.5 | Mike Wilds (GB)/Jan Lundgardh (S) | Tuff-Kote Dinol Racing (S) | DNF | 22nd | 177 laps - Accident | |
| 27 | Porsche 935 K3 | 000 0009 | Gr.5 | Adrian Yates-Smith (GB)/Preston Henn (USA) | Preston Henn (USA) | DNF | 19th | 143 laps - Accident | |
| 30 | Porsche 934 | 930 670 0155 | GT | Richard Cleare (GB)/Andy Rouse (GB) | Richard Cleare (GB) | DNF | 28th | 142 laps - Oil Breather | |
| 21 | Porsche 935 K3 | 930 890 0022 | Gr.5 | Dudley Wood (GB)/John Cooper (GB) | Charles Ivey Racing (GB) | DNF | 15th | 101 laps - Accident | |
| 5 | Porsche 908/80 Turbo | 936-004 | S+2.0 | Jochen Mass (B)/Reinhold Jöst (D)/Volkert Merl (D) | Reinhold Joest (D) | DNF | 1st | 0 laps - Accident |
World Championship for Drivers and Makes Silverstone 6 Hours
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