PORSCHE RACING HISTORY935 L
1985
3 February 1985 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 935 L | 935 L | GTP | Harald Grohs (D) | Henn's Swap Shop Racing (USA) | 74th | 28th | 22nd | 15 laps - Engine |
23 March 1985 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 L | 935 L | GTP | Bob Wollek (F)/Don Whittington (USA)/Preston Henn (USA) | Henn's Swap Shop Racing (USA) | 35th | 12th | 14th | 121 laps - DNF |