PORSCHE RACING HISTORYPorsche 956 - Chassis No. 956-104
10 April 1983 - Monza 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 956 | 956-104 | C | Bob Wollek (F)/Thierry Boutsen (B) | Electrodyne Performance | 1st | 1st | 2nd | 173 laps |
1 May 1983 - DRM Avus - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 956 | 956-104 | C | Bob Wollek (F) | Joest Racing (D) | 1st | 1st | 2nd | 21 laps |
8 May 1983 - Silverstone 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C | Stefan Johansson (S)/Bob Wollek (F) | Joest Racing | 2nd | 2nd | 2nd | 212 laps |
29 May 1983 - Nürburgring 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C | Bob Wollek (F)/Stefan Johansson (S) | Joest Racing | 2nd | 2nd | 3rd | 44 laps |
19 June 1983 - Le Mans 24 Hours - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C | Bob Wollek (F)/Klaus Ludwig (D)/Stefan Johansson (S) | Joest Racing | 6th | 6th | 5th | 354 laps |
24 July 1983 - DRM Diepholz - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| Porsche 956 | 956-104 | C | Bob Wollek (F) | Joest Racing | 4th | 4th | 1st | 63 laps |
23 April 1984 - Monza 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Klaus Ludwig (D)/Stefan Johansson (S)/Henri Pescarolo (F) | Joest Racing | DNF | 10th | 17 laps - Engine |
13 May 1984 - Silverstone 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Klaus Ludwig (D)/Henri Pescarolo (F) | Joest Racing | 2nd | 2nd | 6th | 210 laps |
17 June 1984 - Le Mans 24 Hours - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | Stefan Johansson (S)/Jean-Louis Schlesser (F)/Mauricio DeNarváez (COL) | Joest Racing | DNF | 3rd | 170 laps - Overheating |
15 July 1984 - Nürburgring 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Stefan Johansson (S)/Henri Pescarolo (F)/Ayrton Senna (BR) | New Man Joest Racing | 8th | 8th | 9th | 197 laps |
2 September 1984 - Spa 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Stefan Johansson (S)/Henri Pescarolo (F)/Hans Heyer (D) | Joest Racing | DNF | 7th | 39 laps - Ignition |
30 September 1984 - Fuji 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Stefan Johansson (S)/Henri Pescarolo (F) | Joest Racing | 4th | 4th | 4th | 222 laps |
2 December 1984 - Sandown Park 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Klaus Ludwig (D)/Henri Pescarolo (F) | Joest Racing | 7th | 7th | 7th | 197 laps |
28 April 1985 - Monza 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Paolo Barilla (I)/Hans Heyer (D) | New Man Joest Racing (D) | 9th | 8th | 11th | 125 laps |
12 May 1985 - Silverstone 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Klaus Ludwig (D)/Paolo Barilla (I)/Paul Belmondo (F) | New Man Joest Racing (D) | 6th | 6th | 9th | 206 laps |
16 June 1985 - Le Mans 24 Hours - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | Mauricio DeNarváez (COL)/Kenper Miller (USA)/Paul Belmondo (F) | New Man Joest Racing (D) | DNF | 8th | 277 laps - Accident |
14 July 1985 - Hockenheim 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | Franz Konrad (A)/"John Winter" Louis Krages (D)/Volker Weidler (D) | New Man Joest Racing (D) | DNF | 12th | 55 laps - Accident |
1 September 1985 - Spa 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | "John Winter" Louis Krages (D)/Marc Duez (B)/Volker Weidler (D) | New Man Joest Racing (D) | 6th | 6th | 9th | 120 laps |
6 October 1985 - Fuji 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | Mauricio DeNarváez (COL)/Paul Belmondo (F)/"John Winter" Louis Krages (D) | Newman Joest Racing (D) | DNF | 14th | 2 laps - Withdrawn due to weather |
20 April 1986 - Monza 360 km - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | "John Winter" Louis Krages (D)/Marc Duez (B) | Joest Racing (D) | DNF | 8th | 60 laps - Out of Fuel |
4 May 1986 - Silverstone 1000 km - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | George Follmer (USA)/John Morton (USA)/Paolo Barilla (I) | Joest Racing (D) | 6th | 6th | 6th | 205 laps |
1 June 1986 - Le Mans 24 Hours - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | George Follmer (USA)/John Morton (USA)/Kenper Miller (USA) | Joest Racing (D) | 3rd | 3rd | 11th | 355 laps |
29 June 1986 - Norisring 100 Mile - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | "John Winter" Louis Krages (D) | Sachs-Joest Racing (D) | 8th | 8th | 13th | 76 laps |
20 July 1986 - Brands Hatch 1000 km - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | Paolo Barilla (I)/Klaus Ludwig (D)/"John Winter" Louis Krages (D) | Joest Racing (D) | 5th | 5th | 8th | 230 laps |
24 August 1986 - Nürburgring 1000 km - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Piercarlo Ghinzani (I)/Kris Nissen (DK)/"John Winter" Louis Krages (D) | Joest Racing (D) | DNF | 10th | 22 laps - Withdrawn Due To Conditions |
15 September 1986 - Spa 1000 km - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | "John Winter" Louis Krages (D)/Vern Schuppan (AUS)/Kris Nissen (DK) | Joest Racing (D) | 8th | 8th | 12th | 139 laps |
5 October 1986 - Fuji 1000 km - World Sports-Prototype Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 | 956-104 | C1 | Kris Nissen (DK)/"John Winter" Louis Krages (D)/Harald Grohs (D) | Joest Racing (D) | 5th | 5th | 21st | 223 laps |