PORSCHE RACING HISTORYA. J. Foyt (USA)
1983 : Daytona 24 Hours - 1st overall : Daytona 250 Miles Paul Revere - 1st overall
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 L | 935 L | GTP | Bob Wollek (F)/Claude Ballot-Léna (F)/Preston Henn (USA)/A. J. Foyt (USA) | Henn's Swap Shop Racing (USA) | 1st | 1st | 1st | 618 laps |
24 April 1983 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3 | 000 0009 | GTP | Michael Andretti (USA)/A. J. Foyt (USA)/Mario Andretti (USA)/Preston Henn (USA) | PPG Industries (USA) | 20th | 7th | 9th | 154 laps - DNF |
24 April 1983 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 09 | Porsche 935 L | 935 L | GTP | A. J. Foyt (USA)/Mario Andretti (USA)/Bill Whittington (USA) | PPG Industries (USA) | 37th | 11th | 10th | 81 laps - DNF |
3 July 1983 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 L | 935 L | GTP | Hurley Haywood (USA)/A. J. Foyt (USA) | Henn's Swap Shop Racing (USA) | 1st | 1st | 1st | 65 laps |
27 November 1983 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 L | 935 L | GTP | A. J. Foyt (USA)/Bill Adam (CDN) | Henn's Swap Shop Racing (USA) | 29th | 12th | 4th | 75 laps |