PORSCHE RACING HISTORY1974 - Watkins Glen 6 Hours
13 July 1974 - Watkins Glen, USA
Herbert Müller & Gijs van Lennep 2nd in a Porsche 911 Carrera RSR Turbo, 9 laps behind the winning Matra MS670C driven by Jean-Pierre Jarier & Jean-Pierre Beltoise
Overall - 2nd, 3rd : S3.0 - 2nd : GT - 1st, 2nd, 3rd : Trans Am - 1st, 2nd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 911 Carrera RSR Turbo | 911 460 9102 R13 | S3.0 | Herbert Müller (CH)/Gijs van Lennep (NL) | Martini Racing/Porsche System (D) | 2nd | 2nd | 4th | 184 laps |
| 59 | Porsche 911 Carrera RSR | 911 460 9054 | TA | Peter Gregg (USA)/Hurley Haywood (USA) | Brumos Porsche-Audi Corp. (USA) | 3rd | 1st | 6th | 176 laps |
| 74 | Porsche 911 Carrera RSR | 911 460 9080 | TA | Ludwig Heimrath, Sr (CDN)/Jim Cook (USA) | Heimrath Turbo, Inc. (CDN) | 4th | 2nd | 15th | 172 laps |
| 65 | Porsche 911 Carrera RSR | 911 460 0025 | TA | Jacques Bienvenue (CDN)/Marc Dancose (CDN)/Eugenio Baturone (E) | Jacques Bienvenue (CDN) | 6th | 4th | 18th | 164 laps |
| 34 | Porsche 911 Carrera RSR | GT | Sam Posey (USA)/David Hobbs (GB)/Elliott Forbes-Robinson (USA) | Ted Trudon Porsche - Audi, Inc. | 8th | 1st | 17th | 160 laps | |
| 5 | Porsche 911 Carrera RSR | 911 460 9049 | GT | Michael Keyser (USA)/Milt Minter (USA) | Toad Hall Motor Racing (USA) | 10th | 2nd | 10th | 149 laps |
| 43 | Porsche 911 Carrera RSR | 911 360 0915 | GT | John O'Steen (USA)/John Graves (USA)/Dave Helmick (USA) | International Performance Center, Inc. (USA) | 13th | 3rd | 22nd | 126 laps |
| 95 | Porsche 911 Carrera RSR | 911 460 9057 | TA | Skip Barber (USA)/Bob Hagestad (USA) | Robert Hagestad (USA) | DNF | 12th | 129 laps - Rear Suspension | |
| 92 | Porsche 911 Carrera RSR | 911 360 0386 | GT | Dieter Oest (USA)/Mike Tillson (USA)/Lou Higgins (CDN) | Oest-Tillson Racing (USA) | DNF | 30th | 39 laps - Engine Failure | |
| 16 | Porsche 908/02 | 908/02-022 | S3.0 | Dennis Aase (USA)/Scooter Patrick (USA) | Aase Brothers (USA) | DNF | 5th | 8 laps - Gearbox Linkage |
World Championship for Makes Trans-Am Watkins Glen 6 Hours
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