PORSCHE RACING HISTORYJohn Paul, Jr. (USA)
1983
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 935 JLP-3 | JLP-3 | GTP | John Paul, Jr. (USA)/Rene Rodriguez (USA)/Joe Castellano (I) | JLP Racing (USA) | 25th | 8th | 2nd | 412 laps - Turbocharger |
19 March 1983 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 09 | Porsche 935 L | 935 L | GTP | Derek Bell (GB)/Michael Andretti (USA)/John Paul, Jr. (USA) | Henn's Swap Shop Racing (USA) | 56th | 9th | 1st | 125 laps - Engine |
10 April 1983 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 935 JLP-4 | JLP-4 | GTP | John Paul, Jr. (USA)/Rene Rodriguez (USA) | JLP Racing (USA) | 6th | 6th | 6th | 119 laps |
21 August 1983 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 935 L | 935 L | GTP | John Paul, Jr. (USA)/Preston Henn (USA) | Henn's Swap Shop Racing (USA) | 33rd | 8th | 3rd | 63 laps - DNF |
2 October 1983 - Fuji 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 48 | Porsche 956 | 956-103 | C | Preston Henn (USA)/Kunimitsu Takahashi (J)/John Paul, Jr. (USA) | Alpha Racing | DNF | 9th | 64 laps - Contact |