Al Holbert (GTP)
Wayne Baker (GTO)
Roger Mandeville (GTU)
Mistrz producentów
Porsche (GTP)
Porsche (GTO)
Mazda (GTU)
| Runda | Tor | Data | Klasa | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|---|
| 1 | Daytona Daytona 24 godziny | 1983.01.05 - 01.06 | GTU | Mazda RX-7 | Kent Racing | |
| 2 | Miami | 1983.02.27 | GTU | Mazda RX-7 | Mandeville Auto Tech | |
| 3 | Sebring Sebring 12 godzin | 1983.03.19 | GTU | Mazda RX-7 | Mike Meyer Racing | |
| 4 | Road Atlanta | 1983.04.10 | GTU | Datsun ZX | Alderman Datsun | |
| 5 | Riverside | 1983.04.24 | GTU | Toyota Celica | All American Racers | |
| 6 | Laguna Seca | 1983.05.01 | GTU | BMW 320i | Boy Hayje | |
| 7 | Charlotte | 1983.05.15 | GTU | Toyota Celica | All American Racers | |
| 8 | Lime Rock Park | 1983.05.30 | GTU | Datsun 280ZX | Leitzinger Racing | |
| 9 | Mid-Ohio | 1983.06.19 | GTU | Mazda RX-7 | Western Airlines | |
| 10 | Daytona | 1983.07.04 | GTU | Mazda RX-7 | RPG 500 Racing | |
| 11 | Brainerd | 1983.07.10 | GTU | Mazda RX-7 | Mandeville Auto Tech | |
| 12 | Sears Point | 1983.07.24 | GTU | Mazda RX-7 | Trinity Racing | |
| 13 | Portland | 1983.07.31 | GTU | Mazda RX-7 | Mandeville Auto Tech | |
| 14 |  Mosport Park | 1983.08.14 | GTU | Mazda RX-7 | Mandeville Auto Tech | |
| 15 | Road America | 1983.08.21 | GTU | Mazda RX-7 | Mandeville Auto Tech | |
| 16 | Pocono | 1983.09.11 | GTU | Mazda RX-7 | RGP 500 Racing | |
| 17 | Daytona | 1983.11.27 | GTU | Porsche 924 Carrera |  |
