PORSCHE RACING HISTORY935 K3/80
1983
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 73rd | 16th | 4th | 43 laps - Accident |
27 February 1983 - Miami GP - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Dale Whittington (USA) | Bob Akin Motor Racing (USA) | 14th | 14th | 15th | 26 laps |
19 March 1983 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/Dale Whittington (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 2nd | 1st | 6th | 231 laps |
10 April 1983 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/Dale Whittington (USA) | Bob Akin Motor Racing (USA) | 43rd | 12th | 4th | 65 laps - DNF |
24 April 1983 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/Dale Whittington (USA) | Bob Akin Motor Racing (USA) | 7th | 5th | 16th | 176 laps |
| 50 | Porsche 935 K3/80 | 000 00010 | GTP | George Dyer (USA)/Greg Pusey (USA) | Drax Racing | 44th | 13th | 14th | 46 laps - DNF |
15 May 1983 - Charlotte 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 27th | 7th | 7th | 92 laps |
30 May 1983 - Lime Rock 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 2nd | 2nd | 5th | 173 laps |
19 June 1983 - Mid-Ohio 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 2nd | 2nd | 5th | 201 laps |
3 July 1983 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 3rd | 3rd | 6th | 64 laps |
10 July 1983 - Brainerd 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/Dennis Aase (USA) | Bob Akin Motor Racing (USA) | 4th | 4th | 5th | 102 laps |
| 50 | Porsche 935 K3/80 | 000 00010 | GTP | Greg Pusey (USA)/Kathy Rude (USA) | Drax Racing | 18th | 5th | 8th | 58 laps - Accident |
14 August 1983 - Mosport 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA)/Dennis Aase (USA) | Bob Akin Motor Racing (USA) | 12th | 6th | 5th | 191 laps |
21 August 1983 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA) | Bob Akin Motor Racing (USA) | 42nd | 11th | 15th | 25 laps - DNF |
11 September 1983 - Pocono 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA) | Bob Akin Motor Racing (USA) | 4th | 3rd | 8th | 171 laps |