PORSCHE RACING HISTORYChassis No. 935/84
27 November 1983 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935/84 | 935/84 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 2nd | 2nd | 3rd | 91 laps |
5 February 1984 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935/84 | 935/84 | GTP | Bob Akin (USA)/John O'Steen (USA)/Bobby Rahal (USA) | Bob Akin Motor Racing (USA) | 56th | 23rd | 9th | 181 laps - Body |
26 February 1984 - Miami 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935/84 | 935/84 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 22nd | 22nd | 16th | 37 laps - Off Track |
24 March 1984 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935/84 | 935/84 | GTP | Bob Akin (USA)/John O'Steen (USA)/Hans-Joachim Stuck (D) | Bob Akin Motor Racing (USA) | 5th | 5th | 3rd | 256 laps |
29 April 1984 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935/84 | 935/84 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 8th | 8th | 12th | 184 laps |
3 February 1985 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935/84 | 935/84 | GTP | Jim Mullen (USA)/Kees Nierop (CDN)/Ray McIntyre (USA) | Obermaier Racing (D) | 5th | 5th | 20th | 668 laps |
22 March 1986 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935/84 | 935/84 | GTP | Jerry Kendall (USA)/Dave White (USA)/Werner Frank (USA) | Jerry Kendall (USA) | 66th | 11th | 22nd | 40 laps - DNF |