John Gunn (USA)
1978
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
4 | Porsche 935 | Gr.5 | Hurley Haywood (USA)/John Gunn (USA) | Vasek Polak Racing (USA) | 33rd | 14th | 17th | 72 laps - Oil Leak |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
27 | Porsche 911 S | GTU | Jack Refenning (USA)/John Gunn (USA) | 33rd | 10th | 34th | 73 laps |