1983 IMSA GT Championship season Schedule Schedule

| Race | Length_ | Class_ | Circuit | Date_ |
|---|---|---|---|---|
| Monterey Triple Crown | 45 Minutes | GTU | Laguna Seca Raceway | May 1 |
| Monterey Triple Crown | 100 Miles | GTP/GTO | Laguna Seca Raceway | May 1 |
| Charlotte Camel GT 500 | 500km | All | Charlotte Motor Speedway | May 15 |
| Coca-Cola 500 | 3 Hours | All | Lime Rock Park | May 30 |
| Lumbermen`s 6 Hours | 6 Hours | All | Mid-Ohio Sports Car Course | June 19 |
| Paul Revere 250 | 250 Miles | All | Daytona International Speedway | July 4 |
| Pepsi Grand Prix | 500km | All | Brainerd International Raceway | July 10 |
| Ford California Grand Prix | 3 Hours | All | Sears Point Raceway | July 24 |
| G.I. Joe`s Grand Prix | 3 Hours | All | Portland International Raceway | July 31 |
| Labatt`s GT | 6 Hours | All | Mosport Park | August 14 |