1983 IMSA GT Championship season Schedule Schedule

| Race | Length_ | Class_ | Circuit | Date_ |
|---|---|---|---|---|
| 24 Hour Pepsi Challenge | 24 Hours | All | Daytona International Speedway | February 5 February 6 |
| Budweiser Grand Prix of Miami | 100km | GTU | Streets of Miami | February 27 |
| Budweiser Grand Prix of Miami | 3 Hours | GTP | Streets of Miami | February 27 |
| Budweiser Grand Prix of Miami | 100km | GTO | Streets of Miami | February 27 |
| Coca-Cola Classic 12 Hours of Sebring | 12 Hours | All | Sebring International Raceway | March 19 |
| Road Atlanta Nissan / Datsun 500 | 500km | All | Road Atlanta | April 10 |
| Los Angeles Times / Datsun Grand Prix | 6 Hours | All | Riverside International Raceway | April 24 |