PORSCHE RACING HISTORYDave Helmick (USA)
1974 : Watkins Glen 6 Hours - 3rd in class
13 July 1974 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 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 |