Windle Turley (USA)
1977
6 February 1977 - Daytona 24 Hours - World Championship for Makes
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
10 | Porsche 911 S | GTU | M. L. Speer (USA)/Windle Turley (USA)/Hal Sahlman (USA) | M. L. Speer | 20th | 7th | 33rd | 464 laps |
19 March 1977 - Sebring 12 Hours - IMSA - International Motor Sport Association
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
70 | Porsche 911 S | GTU | M. L. Speer (USA)/Windle Turley (USA) | Race Car | 14th | 4th | 56th | 188 laps |