Schedule
The GT and Prototype classes did not participate in all events, nor did they race together at shorter events. Races marked with All had all classes on track at the same time.
| Rnd | Race | Length | Class | Circuit | Date |
|---|---|---|---|---|---|
| 1 | 24 Hour Pepsi Challenge | 24 Hours | All | Daytona International Speedway | February 5 February 6 |
| 2 | Budweiser Grand Prix of Miami | 100 km | GTU | Streets of Miami | February 27 |
| 3 Hours | GTP | ||||
| 100 km | GTO | ||||
| 3 | Coca-Cola Classic 12 Hours of Sebring | 12 Hours | All | Sebring International Raceway | March 19 |
| 4 | Road Atlanta Nissan/Datsun 500 | 500 km | All | Road Atlanta | April 10 |
| 5 | Los Angeles Times/Datsun Grand Prix | 6 Hours | All | Riverside International Raceway | April 24 |
| 6 | Monterey Triple Crown | 45 Minutes | GTU | Laguna Seca Raceway | May 1 |
| 100 Miles | GTP/GTO | ||||
| 7 | Charlotte Camel GT 500 | 500 km | All | Charlotte Motor Speedway | May 15 |
| 8 | Coca-Cola 500 | 3 Hours | All | Lime Rock Park | May 30 |
| 9 | Lumbermen's 6 Hours | 6 Hours | All | Mid-Ohio Sports Car Course | June 19 |
| 10 | Paul Revere 250 | 250 Miles | All | Daytona International Speedway | July 4 |
| 11 | Pepsi Grand Prix | 500 km | All | Brainerd International Raceway | July 10 |
| 12 | Ford California Grand Prix | 3 Hours | All | Sears Point Raceway | July 24 |
| 13 | G.I. Joe's Grand Prix | 3 Hours | All | Portland International Raceway | July 31 |
| 14 | Labatt's GT | 6 Hours | All | Mosport Park | August 14 |
| 15 | Road America Pabst 500 | 500 Miles | All | Road America | August 21 |
| 16 | Grand Prix of Pocono | 500 Miles | All | Pocono Raceway | September 11 |
| 17 | Eastern Airlines 3 Hours of Daytona | 3 Hours | All | Daytona International Speedway | November 27 |
Read more about this topic: 1983 IMSA GT Championship Season