PORSCHE RACING HISTORY1979 - Watkins Glen 6 Hours
7 July 1979 - Watkins Glen, USA
Don Whittington, Klaus Ludwig & Bill Whittington win in a Porsche 935/77A
Overall - 1st, 2nd, 3rd : Gr.5 - 1st, 2nd, 3rd : TA-II - 1st, 2nd, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/77A | 930 890 0023 | Gr.5 | Don Whittington (USA)/Klaus Ludwig (D)/Bill Whittington (USA) | Whittington Bros/Kremer Racing (USA) | 1st | 1st | 2nd | 175 laps |
| 70 | Porsche 935 | 009 00030 | Gr.5 | Rolf Stommelen (D)/Dick Barbour (USA)/Paul Newman (USA) | Dick Barbour Performance (USA) | 2nd | 2nd | 1st | 171 laps |
| 71 | Porsche 935 | 930 890 0024 | TA-II | Rob McFarlin (USA)/Roy Woods (USA)/Bob Akin (USA) | Dick Barbour Performance (USA) | 3rd | 1st | 9th | 170 laps |
| 20 | Porsche 935 | 930 770 0905 | Gr.5 | Elliott Forbes-Robinson (USA)/Randolph Townsend (USA)/Brett Lunger (USA) | Andial Porsche Service (USA) | 4th | 3rd | 4th | 169 laps |
| 6 | Porsche 935 | 930 770 0957 | Gr.5 | Charles Mendez (USA)/Paul Miller (USA) | CMR Inc. (USA) | 5th | 4th | 10th | 167 laps |
| 18 | Porsche 935 JLP-1 | JLP-1 | TA-II | John Paul Sr. (USA)/Al Holbert (USA) | J.L.P. Racing, Inc. (USA) | 6th | 2nd | 7th | 167 laps |
| 95 | Porsche 935/79 | TA-II | Bill Whittington (USA)/Brian Redman (GB)/Johnny Rutherford (USA) | Whittington Brothers (USA) | 8th | 3rd | 8th | 161 laps | |
| 72 | Porsche 935 | 930 770 0910 | TA-II | Skeeter McKitterick (USA)/Buzz Marcus (USA)/Bob Garretson (USA) | Dick Barbour Performance (USA) | 9th | 4th | 16th | 161 laps |
| 38 | Porsche 911 Carrera RSR | 911 460 9113 | TA-II | Bonky Fernandez (PR)/Tato Ferrer (PR) | Boricua Motors Corp. (PR) | 11th | 6th | 24th | 160 laps |
| 97 | Porsche 911 Carrera RSR | 911 460 0075 | TA-II | Roger Schramm (USA)/Werner Frank (USA) | Framm Promotions (USA) | 12th | 7th | 25th | 158 laps |
| 66 | Porsche 935 | 930 770 0959 | TA-II | Tuck Thomas (USA)/Norm Ridgely (CDN)/Robert Kirby (USA) | Stanton/Barbour (USA) | 13th | 8th | 19th | 155 laps |
| 77 | Porsche 911 S | TA-I | Bruce Jennings (USA)/Bob Beasley (USA)/Bill Bean (USA) | Bruce Jennings (USA) | 18th | 6th | 41st | 142 laps | |
| 13 | Porsche 935 | 930 670 0180 | TA-II | Hal Shaw, Jr. (USA)/Gary Belcher (USA) | Hal Shaw Racing (USA) | 23rd | 9th | 17th | 120 laps - Pit Fire |
| 7 | Porsche 935 | 930 770 0958 | Gr.5 | Ludwig Heimrath, Sr (CDN)/Carlos Moran (ES) | Heimrath Racing (CDN) | 24th | 10th | 11th | 117 laps - Engine |
| 47 | Porsche 911 Carrera RSR | 911 460 0037 | TA-II | Jon McKnight (USA)/Doug Lutz (USA) | Doug Lutz (USA) | 26th | 12th | 27th | 111 laps - Ignition |
| 55 | Porsche 911 Carrera | TA-II | Alan Howes (USA)/David Sturtevant (USA) | Intrepid Design Inc. (USA) | 30th | 14th | 42nd | 78 laps - Oil Pressure | |
| 85 | Porsche 935 | 930 770 0909 | TA-II | Peter Gregg (USA)/Hurley Haywood (USA)/Bruce Leven (USA) | Bayside Disposal Racing (USA) | 31st | 15th | 3rd | 72 laps - Engine |
| 0 | Porsche 935/79 | 930 990 0029 | Gr.5 | Ted Field (USA)/Danny Ongais (USA) | Interscope Racing (USA) | 32nd | 6th | 48 laps - Accident | |
| 23 | Porsche 914/6 | 473 29 24107 | TA-I | Bob Zulkowski (USA)/Bernie Storc (USA) | Metal Craft Racing (USA) | 33rd | 13th | 33rd | 48 laps - DNF |
| 57 | Porsche 935 | 930 770 0951 | TA-II | Neil Shelton (USA)/Monte Shelton (USA) | Monte's Motor Co. (USA) | 35th | 16th | 15th | 46 laps - Accident |
| 09 | Porsche 935/77A | 930 890 0021 | Gr.5 | Rick Mears (USA)/Preston Henn (USA)/Peter Gregg (USA) | Bayside Disposal Racing (USA) | 42nd | 5th | 7 laps - Fire |
World Championship for Makes Trans-Am Watkins Glen 6 Hours
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