1990 IMSA GT Championship
The 1990 Camel GT Championship season was the 20th season of the IMSA GT Championship auto racing series. It consisted of GTP and Lights classes of prototypes, as well as Grand Tourer-style racing cars which ran in the GTO and GTU classes, as well as a tube-frame All-American Challenge class during select GT-only rounds. It began February 3, 1990, and ended November 11, 1990, after twenty rounds.
Schedule
The GT and Prototype classes did not participate in all events, nor did they race together at shorter events. The AAC class only participated in GT-only events. Races marked with All had all classes on track at the same time.| Rnd | Race | Length | Class | Circuit | Date |
| 1 | SunBank 24 at Daytona | 24 Hours | All | Daytona International Speedway | February 3 February 4 |
| 2 | Nissan Grand Prix of Miami | 2 Hours 45 Minutes | Proto | Streets of Miami | February 25 |
| 2 | Nissan Grand Prix of Miami | 45 Minutes | GT | Streets of Miami | February 25 |
| 3 | 12 Hours of Sebring | 12 Hours | All | Sebring International Raceway | March 17 |
| 4 | Nissan Grand Prix of Atlanta | 500 km | Proto | Road Atlanta | April 1 |
| 5 | Toyota Grand Prix of Long Beach | 1 Hour | GT | Long Beach street course | April 21 |
| 6 | Toyota Grand Prix of Palm Beach | 3 Hours | Proto | West Palm Beach street course | April 22 |
| 7 | Camel Grand Prix of the Heartland | 2 Hours | GT | Heartland Park | May 5 |
| 7 | Camel Grand Prix of the Heartland | 300 km | Proto | Heartland Park | May 6 |
| 8 | Toyota Trucks Lime Rock Grand Prix | 150 Laps | Proto | Lime Rock Park | May 28 |
| 9 | Nissan Grand Prix of Ohio | 500 km | Proto | Mid-Ohio Sports Car Course | June 3 |
| 9 | Nissan Grand Prix of Ohio | 300 km | GT | Mid-Ohio Sports Car Course | June 3 |
| 10 | Nissan Grand Prix of Mosport | 300 km | GT | Mosport Park | June 24 |
| 11 | Camel Continental | 500 km | Proto | Watkins Glen International | July 1 |
| 12 | Grand Prix of the Meadowlands | 45 Minutes | GT | Meadowlands Sports Complex | July 14 |
| 13 | California Camel Grand Prix | 300 km | Proto | Sears Point Raceway | July 15 |
| 14 | G.I. Joe's Camel Grand Prix | 300 km | Proto | Portland International Raceway | July 29 |
| 14 | G.I. Joe's Camel Grand Prix | 1 Hour 30 Minutes | GT | Portland International Raceway | July 29 |
| 15 | Nissan Grand Prix of Road America | 300 km | GT | Road America | August 19 |
| 15 | Nissan Grand Prix of Road America | 500 km | Proto | Road America | August 19 |
| 16 | Nissan Camel Grand Prix of San Antonio | 2 Hours | Proto | San Antonio street course | September 2 |
| 16 | Nissan Camel Grand Prix of San Antonio | 45 Minutes | GT | San Antonio street course | September 2 |
| 17 | The New York 500 | 500 km | GT | Watkins Glen International | September 23 |
| 18 | The Jamesway 300 | 2 Hours | GT | Lime Rock Park | September 29 |
| 19 | Nissan World Challenge of Tampa | 200 Miles | Proto | Florida State Fairgrounds | September 30 |
| 20 | Camel Grand Prix of Greater San Diego | 1 Hour | GT | Del Mar Fairgrounds | November 10 |
| 20 | Camel Grand Prix of Greater San Diego | 1 Hour 45 Minutes | Proto | Del Mar Fairgrounds | November 11 |
Season results
Drivers Championships
won the GTP Drivers Championship driving a Nissan GTP ZX-T and a Nissan NPT-90.Manufacturers championships
A championship for manufacturers was awarded to each of the four classes. For the prototype classes, only the manufacturer of the engine was used rather than the manufacturer of the chassis.Points were awarded to the top 10 on the scale of 20-15-12-10-8-6-4-3-2-1, with exception for the 12 Hours of Sebring, which added five points to each position on the scale, and the 24 Hours of Daytona, which added eight points.
Only the highest-ranking entry from a manufacturer was awarded points at each event. Any other finishes by that manufacturer were merely skipped.