PORSCHE RACING HISTORYElliott Forbes-Robinson (USA)
1977 : Mosport 6 Hours - 2nd in class
9 July 1977 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 934 | 930 670 0152 | GT | Elliott Forbes-Robinson (USA)/Mike Tillson (USA) | Mike Tillson Enterprises, Inc. (USA) | 35th | 8th | 17th | 68 laps - Oil Leak |
20 August 1977 - Mosport 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 98 | Porsche 911 | TA-I | Tom Spalding (USA)/John Bauer (USA)/Elliott Forbes-Robinson (USA) | Tom Spalding Racing (USA) | 4th | 2nd | 17th | 227 laps |