# 1993 IMSA GT Championship

The 1993 Camel GT Championship and Exxon Supreme GT Championship seasons were the 23rd season of the IMSA GT Championship auto racing series. It was the final year of the Camel's sponsorship of the prototype class, and the final year of the GTP and GTP Lights prototype categories before they were replaced with the World Sports Car (WSC) class of prototypes the following year.

## Schedule

The GT classes did not participate in all events. Races marked with All had all classes on track at the same time.
| Rnd | Race | Length | Class | Circuit | Date |
| 1 | Rolex 24 at Daytona | 24 Hours | All | Daytona International Speedway Road Course | January 30 January 31 |
| 2 | Toyota Grand Prix of Miami | 1 Hour 45 Minutes | Proto | Streets of Miami | February 21 |
| 2 | Toyota Grand Prix of Miami | 1 Hour | GT | Streets of Miami | February 21 |
| 3 | Camel 12 Hours of Sebring | 12 Hours | All | Sebring International Raceway | March 20 |
| 4 | Toyota Grand Prix of Atlanta | 1 Hour 45 Minutes | Proto | Atlanta Motor Speedway Roval | April 18 |
| 5 | Toyota Trucks Lime Rock Grand Prix | 2 Hours | Proto | Lime Rock Park | May 31 |
| 6 | Nissan Grand Prix of Ohio | 1 Hour | GT | Mid-Ohio Sports Car Course | June 12 |
| 6 | Nissan Grand Prix of Ohio | 2 Hours | Proto | Mid-Ohio Sports Car Course | June 13 |
| 7 | Camel Continental Grand Prix | 500 km | All | Watkins Glen International Short Course | June 27 |
| 8 | Piggly Wiggly Grand Prix | 500 km | All | Road America | July 11 |
| 9 | Monterey Camel GT | 1 Hour | GT | Laguna Seca Raceway | July 24 |
| 9 | Monterey Camel GT | 1 Hour 45 Minutes | Proto | Laguna Seca Raceway | July 25 |
| 10 | G.I. Joe's/Camel Grand Prix | 1 Hour 45 Minutes | Proto | Portland International Raceway | August 1 |
| 10 | G.I. Joe's/Camel Grand Prix | 1 Hour | GT | Portland International Raceway | August 1 |
| 11 | The Checker Camel Grand Prix | 2 Hours | Proto | Phoenix International Raceway | October 2 |
| 11 | The Checker Camel Grand Prix | 1 Hour | GT | Phoenix International Raceway | October 3 |

## Entries
### Prototypes
#### GTP

| Team | Car | No. | Drivers | Rounds |
| J&P Motorsports | Spice SE89P-Chevrolet | 0 | Hugh Fuller | 7 |
| J&P Motorsports | Spice SE89P-Chevrolet | 0 | Chris Hodgetts | 7 |
| Auto Toy Store | Spice SE90C-Cosworth | 4 | Raul Boesel | 2 |
| Auto Toy Store | Spice SE90P-Chevrolet | 5 | Jeff Andretti | 2-3 |
| Auto Toy Store | Spice SE90P-Chevrolet | 5 | Wayne Taylor | 3 |
| Auto Toy Store | Spice SE90P-Chevrolet | 5 | James Weaver | 3 |
| Auto Toy Store | Spice SE90P-Chevrolet | 5 | Morris Shirazi | 3 |
| Joest Racing | Porsche 962C | 6 | Hurley Haywood | 1, 7 |
| Joest Racing | Porsche 962C | 6 | Chip Robinson | 1 |
| Joest Racing | Porsche 962C | 6 | Danny Sullivan | 1 |
| Joest Racing | Porsche 962C | 6 | Henri Pescarolo | 1 |
| Joest Racing | Porsche 962C | 6 | Bob Wollek | 4, 11 |
| Joest Racing | Porsche 962C | 6 | Ronny Meixner | 4 |
| Joest Racing | Porsche 962C | 6 | "John Winter" | 11 |
| Joest Racing | Porsche 962C | 7 | Manuel Reuter | 1-4, 7–8, 11 |
| Joest Racing | Porsche 962C | 7 | "John Winter" | 1-4, 7–8, 11 |
| Joest Racing | Porsche 962C | 7 | Frank Jelinski | 1 |
| Joest Racing | Porsche 962C | 7 | Bob Wollek | 1 |
| Joest Racing | Porsche 962C | 7 | Chip Robinson | 3 |
| Joest Racing | Porsche 962C | 77 | John Paul Jr. | 8 |
| Wayne Taylor | Intrepid RM-1-Chevrolet | 8 | Wayne Taylor | 2, 4-11 |
| Wayne Taylor | Intrepid RM-1-Chevrolet | 8 | George Fouché | 2 |
| Dyson Racing | Porsche 962 | 16 | James Weaver | 1 |
| Dyson Racing | Porsche 962 | 16 | Rob Dyson | 1 |
| Dyson Racing | Porsche 962 | 16 | Price Cobb | 1 |
| Dyson Racing | Porsche 962 | 16 | Elliott Forbes-Robinson | 1 |
| David Tennyson Racing | Spice SE92P-Chevrolet | 19 | David Tennyson | 2-4 |
| David Tennyson Racing | Spice SE92P-Chevrolet | 19 | Price Cobb | 2 |
| David Tennyson Racing | Spice SE92P-Chevrolet | 19 | François Migault | 3 |
| David Tennyson Racing | Spice SE92P-Chevrolet | 19 | Steve Fossett | 3 |
| David Tennyson Racing | Spice SE92P-Chevrolet | 19 | Hugh Fuller | 3 |
| David Tennyson Racing | Spice AK93-Chevrolet | 19 | Jay Cochran | 5 |
| David Tennyson Racing | Spice AK93-Chevrolet | 19 | Price Cobb | 9 |
| David Tennyson Racing | Spice AK93-Chevrolet | 19 | David Tennyson | 10 |
| Hotchkis Racing | Porsche 962 | 20 | Jim Adams | 1, 3 |
| Hotchkis Racing | Porsche 962 | 20 | Chris Cord | 1, 3 |
| Hotchkis Racing | Porsche 962 | 20 | Robert Kirby | 1 |
| Hotchkis Racing | Porsche 962 | 20 | John Hotchkis | 1 |
| Momo | Nissan NPT-90 | 30 | Derek Bell | 1-8, 10-11 |
| Momo | Nissan NPT-90 | 30 | Giampiero Moretti | All |
| Momo | Nissan NPT-90 | 30 | Massimo Sigala | 1, 9 |
| Momo | Nissan NPT-90 | 30 | John Paul Jr. | 1, 3 |
| Momo | Nissan NPT-90 | 30 | François Migault | 1 |
| Bob Pond Racing | Allard J2X-C-Cosworth | 48 | Robs Lamplough | 9 |
| Chevron Race Cars USA | Chevron B65-Buick | 65 | Dick Leppla | 6 |
| Team Gunnar | Gunnar 966-Porsche | 66 | Dennis Aase | 1, 3 |
| Team Gunnar | Gunnar 966-Porsche | 66 | Jay Cochran | 1, 3 |
| Team Gunnar | Gunnar 966-Porsche | 66 | Chip Hanauer | 1, 3 |
| Team Gunnar | Gunnar 966-Porsche | 66 | Carlos Morán | 1 |
| Team Gunnar | Gunnar 966-Porsche | 66 | Bobby Carradine | 1, 3 |
| Team Gunnar | Gunnar 966-Porsche | 66 | John Paul Jr. | 5, 8-11 |
| Team Gunnar | Gunnar 966-Porsche | 66 | Charles Slater | 8-11 |
| private entrant | Spice SE87C-Ford | 71 | Miroslav Jonak | 6 |
| Euromotorsport | Nissan NPT-90 | 96 | Massimo Sigala | 2 |
| Euromotorsport | Nissan NPT-90 | 96 | Victor Gonzalez | 2 |
| All American Racers | Eagle MkIII-Toyota | 98 | P. J. Jones | 1-7, 9-11 |
| All American Racers | Eagle MkIII-Toyota | 98 | Rocky Moran | 1, 3 |
| All American Racers | Eagle MkIII-Toyota | 98 | Mark Dismore | 1 |
| All American Racers | Eagle MkIII-Toyota | 99 | Juan Manuel Fangio II | 1-7, 9-11 |
| All American Racers | Eagle MkIII-Toyota | 99 | Andy Wallace | 1, 3 |
| All American Racers | Eagle MkIII-Toyota | 99 | Kenny Acheson | 1 |

#### GTP Lights

| Team | Car | No. | Drivers | Rounds |
| Autovolante | Phoenix JG2-Alfa Romeo | 0 | Carlos Morán | 2 |
| Autovolante | Phoenix JG2-Alfa Romeo | 12 | Steven Sirgany | 3, 6 |
| Autovolante | Phoenix JG2-Alfa Romeo | 12 | James Lee | 3 |
| Autovolante | Phoenix JG2-Alfa Romeo | 12 | Cliff Rassweiler | 3 |
| Autovolante | Phoenix JG2-Alfa Romeo | 12 | Edd Davin | 3 |
| Autovolante | Phoenix JG2-Alfa Romeo | 12 | Steve Deeks | 6 |
| Brix Racing | Spice AK93-Acura | 9 | Bob Earl | 1-10 |
| Brix Racing | Spice AK93-Acura | 9 | Bob Schader | 1-4, 6-11 |
| Brix Racing | Spice AK93-Acura | 9 | Chris Smith | 1 |
| Brix Racing | Spice AK93-Acura | 9 | Jeremy Dale | 3 |
| Brix Racing | Spice AK93-Acura | 9 | Price Cobb | 11 |
| John Macaluso | Tiga GT286-Buick | 10 | John Macaluso | 1, 5 |
| John Macaluso | Tiga GT286-Buick | 10 | Ed De Long | 1, 4, 6–7, 9 |
| John Macaluso | Tiga GT286-Buick | 10 | Nick Holmes | 1, 7 |
| John Macaluso | Tiga GT286-Buick | 10 | Bruce MacInnes | 1, 5 |
| John Macaluso | Tiga GT286-Buick | 10 | Chris Ivey | 4 |
| John Macaluso | Tiga GT286-Buick | 10 | Neil Jamieson | 9-11 |
| John Macaluso | Tiga GT286-Buick | 10 | Jeff Lapcevich | 10-11 |
| John Macaluso | Tiga GT286-Buick | 10 | Bobby Brown | 6 |
| Bobby Brown Racing | Tiga GT286-Buick | 11 | Bobby Brown | 4, 6 |
| Bobby Brown Racing | Tiga GT286-Buick | 11 | Ed De Long | 4, 6 |
| Bobby Brown Racing | Tiga GT286-Buick | 16 | Bobby Brown | 7-8 |
| Bobby Brown Racing | Tiga GT286-Buick | 16 | John Macaluso | 7-8 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 13 | Jim Pace | 7-9 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 13 | Mike Sheehan | 7-11 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 13 | Butch Hamlet | 9-11 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 13 | Michael Dow | 11 |
| Downing/Atlanta | Kudzu DG-2-Buick | 63 | Jim Downing | 2, 4-7 |
| Downing/Atlanta | Kudzu DG-2-Buick | 63 | Tim McAdam | 2, 4-7 |
| Downing/Atlanta | Kudzu DG-3-Mazda | 63 | Jim Downing | 8-11 |
| Downing/Atlanta | Kudzu DG-3-Mazda | 63 | Tim McAdam | 8-11 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 63 | Jim Downing | 3 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 63 | Tim McAdam | 3 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 63 | Howard Katz | 3 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 68 | Jim Pace | 4-6 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 68 | Mike Sheehan | 4-5 |
| Downing/Atlanta | Kudzu DG-1-Mazda | 68 | Ken Parschauer | 6 |
| Erie Scientific Company | Kudzu DG-1-Mazda | 36 | John Grooms | 1 |
| Erie Scientific Company | Kudzu DG-1-Mazda | 36 | Frank Jellinek | 1 |
| Erie Scientific Company | Kudzu DG-1-Mazda | 36 | Jim Downing | 1 |
| Erie Scientific Company | Kudzu DG-1-Mazda | 36 | Tim McAdam | 1 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Neil Jamieson | 1, 3–4, 6-7 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Jeff Lapcevich | 1, 3, 5-6 |
| Bieri Racing | Alba AR2/6-Ford | 40 | John Jones | 1, 3–5, 7 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Ken Wilden | 1 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Paul Duckworth | 1 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Heinz Wirth | 1 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Uli Bieri | 3 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Anthony Lazzaro | 1, 3-4 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Sam Shalala | 1, 3-4 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Buddy Lazier | 1 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Mike Sheehan | 1, 3 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Chris Ivey | 1 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Philippe Favre | 3 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Gustl Spreng | 3 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | Charles Monk | 6 |
| Pro-Technik Racing | Fabcar CL-Porsche | 42 | John Higgins | 6 |
| Scandia Engineering | Kudzu DG-2-Buick | 44 | Andy Evans | 1-2 |
| Scandia Engineering | Kudzu DG-2-Buick | 44 | Fermín Vélez | 1-2 |
| Scandia Engineering | Kudzu DG-2-Buick | 44 | Charles Morgan | 1-2 |
| Scandia Engineering | Kudzu DG-2-Buick | 44 | Lou Bender | 1 |
| Scandia Engineering | Kudzu DG-2-Buick | 45 | Fermín Vélez | 1-2 |
| Scandia Engineering | Kudzu DG-2-Buick | 45 | John Marconi | 1 |
| Scandia Engineering | Kudzu DG-2-Buick | 45 | Tom Hessert | 1 |
| Scandia Engineering | Kudzu DG-2-Buick | 45 | Don Bell | 1 |
| Scandia Engineering | Kudzu DG-2-Buick | 45 | Andy Evans | 2 |
| Comptech Racing | Spice SE90P-Acura | 48 | Ruggero Melgrati | 11 |
| Comptech Racing | Spice SE90P-Acura | 48 | Parker Johnstone | 11 |
| Comptech Racing | Spice SE91P-Acura | 49 | Parker Johnstone | All |
| Comptech Racing | Spice SE91P-Acura | 49 | Dan Marvin | 1, 3-11 |
| Comptech Racing | Spice SE91P-Acura | 49 | Steve Cameron | 1 |
| Comptech Racing | Spice SE91P-Acura | 49 | Doug Peterson | 1 |
| Comptech Racing | Spice SE91P-Acura | 49 | Ruggero Melgrati | 2-3 |
| Club Zed Motorsports | Tiga GT286-Mazda | 71 | Peter Harholdt | 1 |
| Club Zed Motorsports | Tiga GT286-Mazda | 71 | John Mirro | 1 |
| Club Zed Motorsports | Tiga GT286-Mazda | 71 | Rob Mingay | 1 |
| Club Zed Motorsports | Tiga GT286-Mazda | 71 | Ross Bentley | 1 |
| Club Zed Motorsports | Tiga GT286-Mazda | 71 | Joseph Hamilton | 1 |
| Miroslav Jonak | Spice SE87C-Ford | 71 | Miroslav Jonak | 5, 7-11 |
| Miroslav Jonak | Spice SE87C-Ford | 71 | Dick Sasser | 9-11 |

#### WSC

World Sports Cars were classified with GTP cars in the final standings, but were run as a separate class in sprint races.
| Team | Car | No. | Drivers | Rounds |
| Huffaker Racing | Kudzu DG-2-Buick | 12 | David Rocha | 11 |
| private entrant | Mantac-Chevrolet | 18 | Cass Whitehead | 8, 10 |
| Performance Tech Motorsports | Argo JM19-Buick | 25 | Brent O'Neill | 2, 6-7 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Fermín Vélez | 11 |
| Bieri Racing | Alba AR2/6-Ford | 40 | Heinz Wirth | 11 |
| Scandia Engineering | Kudzu DG-2-Buick | 43 | Andy Evans | 2, 4, 7–8, 10-11 |
| Scandia Engineering | Kudzu DG-2-Buick | 43 | François Migault | 2, 4–5, 7, 9-10 |
| Scandia Engineering | Kudzu DG-2-Buick | 43 | Tom Hessert | 9 |
| Scandia Engineering | Kudzu DG-2-Buick | 43 | Fermín Vélez | 11 |
| Pegasus Racing | Pegasus WSC-BMW | 46 | Oliver Kuttner | 8-10 |
| Pegasus Racing | Pegasus WSC-BMW | 48 | Oliver Kuttner | 6 |
| Downing/Atlanta | Kudzu DG-2-Buick | 68 | Jim Pace | 11 |
| Downing/Atlanta | Kudzu DG-2-Buick | 68 | Butch Hamlet | 11 |
| James Lee | Shelby LR93-Dodge | 93 | Cliff Rassweiler | 10 |

#### Le Mans Cars

Non-GTP prototypes raced at the 24 Hours of Daytona under this class.
| Team | Car | No. | Drivers | Rounds |
| Jaguar Racing | Jaguar XJR-12D | 2 | Davy Jones | 1 |
| Jaguar Racing | Jaguar XJR-12D | 2 | Scott Pruett | 1 |
| Jaguar Racing | Jaguar XJR-12D | 2 | Scott Goodyear | 1 |
| Jaguar Racing | Jaguar XJR-12D | 3 | David Brabham | 1 |
| Jaguar Racing | Jaguar XJR-12D | 3 | Mario Andretti | 1 |
| Jaguar Racing | Jaguar XJR-12D | 3 | John Nielsen | 1 |
| Jaguar Racing | Jaguar XJR-12D | 32 | John Nielsen | 1 |
| Jaguar Racing | Jaguar XJR-12D | 32 | David Brabham | 1 |
| Jaguar Racing | Jaguar XJR-12D | 32 | Davy Jones | 1 |
| Jaguar Racing | Jaguar XJR-12D | 32 | John Andretti | 1 |

### GT
#### GTS

GTO cars ran as part of the GTS class in endurance races.
| Team | Car | No. | Drivers | Rounds |
| Rocketsports Racing | Oldsmobile Cutlass | 0 | Scott Pruett | 8-10 |
| Rocketsports Racing | Oldsmobile Cutlass | 3 | Paul Gentilozzi | 2, 6-11 |
| Rocketsports Racing | Oldsmobile Cutlass | 5 | Darin Brassfield | 2, 6-11 |
| Rocketsports Racing | Oldsmobile Cutlass | 31 | Dorsey Schroeder | 1, 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 31 | Paul Gentilozzi | 1, 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 31 | Jack Baldwin | 1 |
| Rocketsports Racing | Oldsmobile Cutlass | 31 | Calvin Fish | 1, 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 31 | Darin Brassfield | 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 31 | George Robinson | 1 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | George Robinson | 1 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | Calvin Fish | 1, 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | Darin Brassfield | 1, 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | Scott Pruett | 3 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | Jack Baldwin | 1 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | Dorsey Schroeder | 1 |
| Rocketsports Racing | Oldsmobile Cutlass | 51 | Paul Gentilozzi | 1, 3 |
| Don Arpin | Chevrolet Camaro | 07 | Don Arpin | 1 |
| Don Arpin | Chevrolet Camaro | 07 | Tim Banks | 1 |
| Don Arpin | Chevrolet Camaro | 07 | Paul Reckert | 1 |
| Don Arpin | Chevrolet Camaro | 07 | Guy Church | 1 |
| Don Arpin | Chevrolet Camaro | 07 | David Kicak | 1 |
| Cunningham Racing | Nissan 300ZX Turbo | 1 | Steve Millen | 1-3, 6-7 |
| Cunningham Racing | Nissan 300ZX Turbo | 1 | Johnny O'Connell | 1, 3 |
| Cunningham Racing | Nissan 300ZX Turbo | 1 | John Morton | 1, 3 |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | John Morton | 3 |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | Johnny O'Connell | All |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | Geoff Brabham | 1 |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | David Loring | 1 |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | Tommy Riggins | 1, 3 |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | Dominic Dobson | 1, 3 |
| Cunningham Racing | Nissan 300ZX Turbo | 76 | Steve Millen | 1, 3 |
| Eddie Sharp | Oldsmobile Cutlass | 2 | Eddie Sharp | 3 |
| Eddie Sharp | Oldsmobile Cutlass | 2 | Dick Downs | 3 |
| Eddie Sharp | Oldsmobile Cutlass | 2 | Eddie Sharp Jr. | 3 |
| Bruce Trenery | Chevrolet Camaro | 2 | Bruce Trenery | 7 |
| Bruce Trenery | Chevrolet Camaro | 2 | Kent Painter | 7-8 |
| Bruce Trenery | Chevrolet Camaro | 21 | Bruce Trenery | 1, 3 |
| Bruce Trenery | Chevrolet Camaro | 21 | Kent Painter | 1, 3 |
| Bruce Trenery | Chevrolet Camaro | 21 | Andrew Osman | 1, 3 |
| Bruce Trenery | Chevrolet Camaro | 21 | Larry Less | 1 |
| Bruce Trenery | Chevrolet Camaro | 21 | Robert Borders | 1 |
| Bruce Trenery | Chevrolet Camaro | 21 | Scott Gaylord | 1 |
| Roush Racing | Ford Mustang Cobra | 6 | Tommy Kendall | 2, 6, 8-11 |
| Roush Racing | Ford Mustang Cobra | 11 | Tommy Kendall | 1, 3 |
| Roush Racing | Ford Mustang Cobra | 11 | Robby Gordon | 1 |
| Roush Racing | Ford Mustang Cobra | 11 | Wally Dallenbach Jr. | 1, 3 |
| Roush Racing | Ford Mustang Cobra | 11 | Robbie Buhl | 1 |
| Roush Racing | Ford Mustang Cobra | 11 | John Fergus | 3 |
| Roush Racing | Ford Mustang Cobra | 11 | Max Jones | 3 |
| Roush Racing | Ford Mustang Cobra | 11 | Dan Binks | 3 |
| Roush Racing | Ford Mustang Cobra | 11 | Jim Stevens | 1 |
| Roush Racing | Ford Mustang Cobra | 15 | Jim Stevens | 1 |
| Roush Racing | Ford Mustang Cobra | 15 | John Fergus | 1 |
| Roush Racing | Ford Mustang Cobra | 15 | Mark Martin | 1 |
| Roush Racing | Ford Mustang Cobra | 15 | Tommy Kendall | 7 |
| Roush Racing | Ford Mustang Cobra | 17 | Jon Gooding | 1 |
| Roush Racing | Ford Mustang Cobra | 17 | Joe Pezza | 1 |
| Roush Racing | Ford Mustang Cobra | 17 | Bill Cooper | 1 |
| private entrant | Porsche 930 S | 10 | Charly Godecke | 9-10 |
| Lotusport | Lotus Esprit X180R | 14 | David Murry | 11 |
| Lotusport | Lotus Esprit X180R | 14 | Andy Pilgrim | 11 |
| Lotusport | Lotus Esprit X180R | 14 | Bo Lemler | 11 |
| Tom Gloy Racing | Ford Mustang | 18 | Ron Fellows | 1 |
| Tom Gloy Racing | Ford Mustang | 18 | Desiré Wilson | 1 |
| Tom Gloy Racing | Ford Mustang | 18 | Tomiko Yoshikawa | 1 |
| Tom Gloy Racing | Ford Mustang | 18 | Pieter Baljet | 1 |
| Tom Gloy Racing | Ford Mustang | 18 | Tom Gloy | 1 |
| Anthony Puleo | Chevrolet Camaro | 19 | Anthony Puleo | 1 |
| Anthony Puleo | Chevrolet Camaro | 19 | William Wessel | 1 |
| Anthony Puleo | Chevrolet Camaro | 19 | David Fuller | 1 |
| Anthony Puleo | Chevrolet Camaro | 19 | Tim O'Brien | 1 |
| John Josey | Chevrolet Camaro | 22 | John Josey | 1 |
| John Josey | Chevrolet Camaro | 22 | Craig Rubright | 1 |
| John Josey | Chevrolet Camaro | 22 | Daniel Urrutia | 1, 3 |
| John Josey | Chevrolet Camaro | 22 | Gene Whipp | 1, 3 |
| John Josey | Chevrolet Camaro | 22 | Luis Sereix | 3 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 23 | Oscar Aventín | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 23 | Juan Landa | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 23 | Osvaldo Morresi | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 23 | Osvaldo López | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 23 | Hugo Mazzacane | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 25 | Hugo Mazzacane | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 25 | Emilio Satriano | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 25 | Jorge Oyhanart | 1 |
| Dale Kreider Team Argentina | Oldsmobile Cutlass | 25 | Fabian Acuna | 1 |
| Carolina Racing Engines | Pontiac Grand Prix | 32 | Gary Smith | 3 |
| Carolina Racing Engines | Pontiac Grand Prix | 32 | Mark Kennedy | 3 |
| Carolina Racing Engines | Pontiac Grand Prix | 32 | Robert Borders | 3 |
| Carolina Racing Engines | Pontiac Grand Prix | 32 | Paul Reckert | 3 |
| Fuller Race Cars Inc. | Chevrolet Camaro | 32 | Bill Fuller | 8 |
| Bill McDill | Chevrolet Camaro | 35 | Bill McDill | 1, 3 |
| Bill McDill | Chevrolet Camaro | 35 | Richard McDill | 1, 3 |
| Bill McDill | Chevrolet Camaro | 35 | Tom Juckette | 1, 3 |
| Falgueras/Abreu | Oldsmobile Cutlass | 45 | Rolando Falgueras | 2 |
| Falgueras/Abreu | Oldsmobile Cutlass | 45 | Adriano Abreu | 2 |
| Overbagh Racing | Chevrolet Camaro | 50 | Hoyt Overbagh | 1, 3 |
| Overbagh Racing | Chevrolet Camaro | 50 | Oma Kimbrough | 1, 3, 7 |
| Overbagh Racing | Chevrolet Camaro | 50 | Bob Hundredmark | 1, 3 |
| Overbagh Racing | Chevrolet Camaro | 50 | Robert McElheny | 1, 3 |
| Overbagh Racing | Chevrolet Camaro | 50 | Mark Montgomery | 1, 3 |
| Overbagh Racing | Chevrolet Camaro | 50 | David Kicak | 1, 7 |
| private entrant | Chevrolet Corvette | 51 | Javier Garcia | 2 |
| private entrant | Chevrolet Corvette | 62 | Dan Furey | 6 |
| Kendall Oil Company | Chevrolet Camaro | 67 | Paul Mazzacane | 1-3 |
| Kendall Oil Company | Chevrolet Camaro | 67 | Chester Edwards | 1, 3 |
| Kendall Oil Company | Chevrolet Camaro | 67 | Peter Argetsinger | 3 |
| Kendall Oil Company | Chevrolet Camaro | 67 | Kenny Wallace | 1 |
| private entrant | Pontiac Firebird | 77 | R.J. Gottlieb | 9 |
| Mark Kennedy | Chevrolet Camaro | 81 | Mark Kennedy | 1 |
| Mark Kennedy | Chevrolet Camaro | 81 | Hugh Fuller | 1 |
| Mark Kennedy | Chevrolet Camaro | 81 | Jeff Purvis | 1 |
| Mark Kennedy | Chevrolet Camaro | 81 | Jeff Swindel | 1 |
| Mark Kennedy | Chevrolet Camaro | 81 | Mike Joy | 1 |
| Mark Kennedy | Chevrolet Camaro | 81 | Bob Soccha | 1 |
| Tommy Riggins | Chevrolet Corvette | 86 | Tommy Riggins | 2 |
| John Annis Racing | Chevrolet Camaro | 87 | John Annis | 1, 3 |
| John Annis Racing | Chevrolet Camaro | 87 | Louis Beall | 1, 3 |
| John Annis Racing | Chevrolet Camaro | 87 | Dick Downs | 1 |
| John Annis Racing | Chevrolet Camaro | 87 | Robert Kirkland | 1 |
| John Annis Racing | Chevrolet Camaro | 87 | Bob Deeks | 1 |
| John Annis Racing | Chevrolet Camaro | 87 | Eddie Sharp | 1 |
| John Annis Racing | Chevrolet Camaro | 87 | Kenper Miller | 3 |
| Road Circuit Technology | Pontiac Firebird | 90 | Andy Petery | 1, 3 |
| Road Circuit Technology | Pontiac Firebird | 90 | Les Delano | 1 |
| Road Circuit Technology | Pontiac Firebird | 90 | Steve Fossett | 1 |
| Road Circuit Technology | Pontiac Firebird | 90 | Gary Stewart | 1 |
| Road Circuit Technology | Pontiac Firebird | 90 | Thomas Schweitz | 1, 3 |
| Road Circuit Technology | Pontiac Firebird | 90 | John Macaluso | 3 |
| Oest Enterprises Racing | Porsche 930 Turbo | 93 | Milt Minter | 9, 11 |

#### GTO

GTO cars only raced as a separate class at sprint races.
| Team | Car | No. | Drivers | Rounds |
| Rocketsports Racing | Oldsmobile Cutlass | 00 | Brian DeVries | 6-11 |
| private entrant | Chevrolet Camaro | 06 | Vincent Musicaro | 2 |
| private entrant | Chevrolet Camaro | 7 | Deborah Gregg | 2 |
| private entrant | Oldsmobile Cutlass | 10 | Robert Borders | 2 |
| Competition Motorsport South | Chevrolet Camaro | 10 | Ken Bupp | 6 |
| Competition Motorsport South | Chevrolet Camaro | 11 | Ken Bupp | 2, 7-11 |
| Competition Motorsport South | Chevrolet Camaro | 11 | Peter Uria | 7 |
| Tommy Riggins | Oldsmobile Cutlass | 12 | Joe Llauget | 2, 6-11 |
| private entrant | Pontiac Firebird | 13 | Rick Katko | 6 |
| Roush Racing General Chemical | Ford Mustang | 14 | Michael Dingman | 2 |
| private entrant | Chevrolet Camaro | 16 | Carlos Lopez | 2 |
| Garfield's Auto | Oldsmobile Cutlass | 17 | Joe Pezza | 6-11 |
| Garfield's Auto | Oldsmobile Cutlass | 17 | Michael Zimicki | 7 |
| Garfield's Auto | Oldsmobile Cutlass | 53 | Joe Pezza | 2 |
| private entrant | Ford Mustang | 18 | Lito Riano | 2 |
| private entrant | Chevrolet Camaro | 18 | Mitchell Bender | 6 |
| Dan Osterholt | Oldsmobile Cutlass | 20 | Dan Osterholt | 2, 6-8 |
| Dan Osterholt | Oldsmobile Cutlass | 20 | Clay Young | 7 |
| Briody Racing | Oldsmobile Calais | 24 | Jim Briody | 2 |
| Curren Motorsports | Oldsmobile Cutlass | 27 | Tom Curren | 2 |
| Wayne Akers Ford | Ford Mustang | 28 | Wayne Akers | 2 |
| private entrant | Pontiac Firebird | 28 | Rob Davis | 9 |
| Fuller Race Cars Inc. | Chevrolet Camaro | 30 | Nick Cole | 2, 6, 8, 11 |
| Fuller Race Cars Inc. | Chevrolet Camaro | 30 | Bill Fuller | 11 |
| Fuller Race Cars Inc. | Chevrolet Camaro | 31 | Nick Cole | 7, 11 |
| Fuller Race Cars Inc. | Buick Somerset | 31 | Bill Fuller | 2 |
| Fuller Race Cars Inc. | Chevrolet Camaro | 31 | Bill Fuller | 6, 11 |
| Carolina Racing Engines | Pontiac Grand Prix | 32 | Gary Smith | 2 |
| private entrant | Chevrolet Camaro | 38 | Trent Terry | 6 |
| Falgueras/Abreu | Oldsmobile Cutlass | 46 | Rolando Falgueras | 2 |
| Falgueras/Abreu | Oldsmobile Cutlass | 46 | Adriano Abreu | 2 |
| private entrant | Oldsmobile Cutlass | 47 | Charles Morgan | 6-11 |
| Lindley Racing | Ford Mustang | 48 | Les Lindley | 2, 6-11 |
| private entrant | Ford Thunderbird | 49 | Robert Rose | 6 |
| private entrant | Oldsmobile Cutlass | 51 | Mark Porcaro | 6-8 |
| private entrant | Oldsmobile Cutlass | 68 | Luis Méndez | 2 |
| private entrant | Oldsmobile Toronado | 70 | Bob Lee | 2 |
| Mollett Racing | Ford Mustang | 74 | Casey Mollett | 2, 11 |
| Bobby Basso | Oldsmobile Calais | 80 | Bobby Basso | 7 |
| Bobby Basso | Oldsmobile Calais | 80 | Phil Kelly | 7 |
| private entrant | Chevrolet Camaro | 85 | Chip Boatright | 6 |
| private entrant | Chevrolet Camaro | 87 | Steve Hodge | 10 |
| Groggins Plastics | Oldsmobile Cutlass | 88 | Flip Groggins | 2, 7 |
| private entrant | Chevrolet Camaro | 90 | Jim Maguire | 11 |
| private entrant | Buick Somerset | 91 | Lance Leonelli | 2, 6, 11 |
| Kendall Racing | Ford Mustang | 96 | Chuck Kendall | 9 |
| Performance Plus | Chevrolet Camaro | 99 | Mark Pielsticker | 9-10 |

#### GTU

| Team | Car | No. | Drivers | Rounds |
| Henry Taleb Racing | Nissan 300ZX | 08 | Henry Taleb | 1-2 |
| Henry Taleb Racing | Nissan 300ZX | 08 | Alfonso Adarquea | 1 |
| Henry Taleb Racing | Nissan 300ZX | 08 | Marcelo Adarquea | 1 |
| Henry Taleb Racing | Nissan 300ZX | 08 | Ignacia Escobar | 1 |
| private entrant | Pontiac Fiero | 09 | Luis M. Méndez | 2 |
| Support Net Racing | Mazda MX-6 | 4 | Henry Camferdam | 7-8, 11 |
| Support Net Racing | Mazda MX-6 | 9 | Henry Camferdam | 6 |
| Support Net Racing | Mazda MX-6 | 12 | Henry Camferdam | 1 |
| Support Net Racing | Mazda MX-6 | 12 | Dan Robson | 1 |
| Support Net Racing | Mazda MX-6 | 12 | Gary Drummond | 1 |
| private entrant | Mazda RX-7 | 11 | Steve Clark | 6 |
| private entrant | Porsche 911 | 14 | Mat Lowrance | 9 |
| private entrant | Mazda RX-7 | 15 | Eduardo Pellerano | 6, 8 |
| Auberlen Racing Concepts | Mazda RX-7 | 19 | Bill Auberlen | 2, 6-11 |
| Dibos Racing Team Peru | Mazda MX-6 | 24 | Juan Dibós | 1, 3 |
| Dibos Racing Team Peru | Mazda MX-6 | 24 | Eduardo Dibós | 1, 3 |
| Dibos Racing Team Peru | Mazda MX-6 | 24 | Raúl Orlandini | 1 |
| Dibos Racing Team Peru | Mazda MX-6 | 24 | Roger Mandeville | 1 |
| Dibos Racing Team Peru | Mazda MX-6 | 24 | Bill Auberlen | 3 |
| Dibos Racing Team Peru | Mazda MX-6 | 84 | Eduardo Dibós | 2, 6 |
| Dibos Racing Team Peru | Mazda RX-7 | 84 | Eduardo Dibós | 7-11 |
| Alex Job Racing | Porsche 911 | 26 | Charles Slater | 1, 3, 6–8, 11 |
| Alex Job Racing | Porsche 911 | 26 | Butch Hamlet | 1, 3 |
| Alex Job Racing | Porsche 911 | 26 | Mark Sandridge | 1 |
| Alex Job Racing | Porsche 911 | 26 | Bill Ferran | 3, 7 |
| Alex Job Racing | Porsche 911 | 26 | Peter Uria | 8 |
| Charles Wagner | Mazda RX-7 | 39 | Bill Auberlen | 1 |
| Charles Wagner | Mazda RX-7 | 39 | Dave Russell | 1 |
| Charles Wagner | Mazda RX-7 | 39 | Charles Wagner | 1 |
| Charles Wagner | Mazda RX-7 | 39 | Mike Graham | 1 |
| Richardson Racing | Lotus Esprit | 40 | Tim Richardson | 11 |
| Kryderacing | Nissan 240SX | 57 | Reed Kryder | 1-3, 6–8, 11 |
| Kryderacing | Nissan 240SX | 57 | Frank Del Vecchio | 1, 3 |
| Kryderacing | Nissan 240SX | 57 | Guy Kuster | 1, 3, 8 |
| Kryderacing | Nissan 240SX | 57 | Joe Danaher | 1 |
| private entrant | Porsche 911 | 57 | Monte Shelton | 10 |
| Pro-Technik Racing | Porsche 911 | 58 | Sam Shalala | 1, 6 |
| Pro-Technik Racing | Porsche 911 | 58 | Anthony Lazzaro | 1 |
| Pro-Technik Racing | Porsche 911 | 58 | Frank Beard | 1, 3 |
| Pro-Technik Racing | Porsche 911 | 58 | Alex Tradd | 1 |
| Pro-Technik Racing | Porsche 911 | 58 | Andre Toennis | 1 |
| Pro-Technik Racing | Porsche 911 | 58 | Omar Daniel | 1 |
| Pro-Technik Racing | Porsche 911 | 58 | Curt Catallo | 3 |
| Pro-Technik Racing | Porsche 911 | 58 | Haas Fogle | 3 |
| Pro-Technik Racing | Porsche 911 | 58 | Ernie Lader | 3 |
| Pro-Technik Racing | Porsche 911 | 58 | Bill Ferran | 6 |
| private entrant | Nissan 240SX | 66 | John Goddard | 9-10 |
| Kenneth Brady | Mazda MX-6 | 70 | Kenneth Brady | 3 |
| Kenneth Brady | Mazda MX-6 | 70 | Bill Weston | 3 |
| Kenneth Brady | Mazda MX-6 | 70 | Dom DeLuca | 3 |
| Jay Kjoller | Porsche 911 | 72 | Jay Kjoller | 7-8 |
| Jay Kjoller | Porsche 911 | 72 | Joe Cogbill | 7-8 |
| Jay Kjoller | Porsche 911 | 72 | James O'Connell | 6 |
| Jack Lewis Enterprises | Porsche 964 Carrera RSR | 73 | Jack Lewis | 1, 6-8 |
| Jack Lewis Enterprises | Porsche 964 Carrera RSR | 73 | Joe Cogbill | 1 |
| Jack Lewis Enterprises | Porsche 964 Carrera RSR | 73 | Stephen Hynes | 1, 7 |
| Jack Lewis Enterprises | Porsche 964 Carrera RSR | 73 | Bob Barker | 1 |
| Jack Lewis Enterprises | Porsche 964 Carrera RSR | 73 | Bill Ferran | 8 |
| Dick Greer Racing Wendy's Race Team | Mazda RX-7 | 82 | Dick Greer | All |
| Dick Greer Racing Wendy's Race Team | Mazda RX-7 | 82 | Al Bacon | 1, 3 |
| Dick Greer Racing Wendy's Race Team | Mazda RX-7 | 82 | Peter Uria | 1, 3 |
| Dick Greer Racing Wendy's Race Team | Mazda RX-7 | 82 | Mike Mees | 1, 3 |
| private entrant | Porsche 911 | 85 | Tony Canahuate | 2 |
| Dynamic Air Conditioning | Porsche 911 | 89 | Bruce Jones | 6 |
| Dynamic Air Conditioning | Porsche 911 | 89 | Ray Hendricks | 7 |
| Team Casual Motorsport | Porsche 911 | 91 | Mel Butt | 3 |
| Team Casual Motorsport | Porsche 911 | 91 | Ron Zitza | 3 |
| Team Casual Motorsport | Porsche 911 | 91 | Tommy Johnson | 3 |
| Team Casual Motorsport | Porsche 911 | 91 | C. Lorin Hicks | 3 |
| Oest Enterprises Racing | Porsche 911 Carrera RSR | 92 | Dieter Oest | 9 |
| Leitzinger Racing | Nissan 240SX | 95 | Bob Leitzinger | All |
| Leitzinger Racing | Nissan 240SX | 95 | Butch Leitzinger | 1, 3 |
| Leitzinger Racing | Nissan 240SX | 95 | Chuck Kurtz | 1 |
| Leitzinger Racing | Nissan 240SX | 95 | Don Knowles | 3 |
| Leitzinger Racing | Nissan 240SX | 97 | Butch Leitzinger | 2, 6-11 |

#### Invitational GT

Production-based GT cars were allowed to compete in endurance races and selected sprint races as part of this class, not scoring championship points.
| Team | Car | No. | Drivers | Rounds |
| Ed Arnold Racing | BMW M5 | 0 | David Donohue | 3 |
| Ed Arnold Racing | BMW M5 | 0 | Dieter Quester | 3 |
| Ed Arnold Racing | BMW M5 | 0 | Chris Hodgetts | 3 |
| Ed Arnold Racing | BMW M5 | 0 | Ed Arnold | 3 |
| Ed Arnold Racing | BMW M5 | 0 | Bill Adam | 3 |
| Rohr Engineering | Porsche 964 Carrera 2 Cup | 01 | Jochen Rohr | 1, 3, 7 |
| Rohr Engineering | Porsche 964 Carrera 2 Cup | 01 | John O'Steen | 1, 3, 7 |
| Rohr Engineering | Porsche 964 Carrera 2 Cup | 01 | Larry Schumacher | 1 |
| Rohr Engineering | Porsche 964 Carrera 2 Cup | 01 | Dave White | 1, 3 |
| Rohr Engineering | Porsche 964 Carrera 2 Cup | 01 | Nick Ham | 1 |
| Rohr Engineering | Porsche 964 Carrera 2 Cup | 01 | Rich Moskalik | 1, 3 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Lou Gigliotti | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | R.J. Valentine | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Max Schmidt | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Jim Minneker | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Ken Payson | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Kim Baker | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Shawn Hendricks | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Peter Cunningham | 1 |
| Mercruiser | Chevrolet Corvette | 4, 5 | Boris Said | 1 |
| Mercruiser | Chevrolet Corvette | 5 | Brian Bonner | 1 |
| Scott Clarke | Porsche 944 Turbo | 15 | Lance Stewart | 3 |
| Scott Clarke | Porsche 944 Turbo | 15 | Rob Wilson | 3 |
| Scott Clarke | Porsche 944 Turbo | 15 | Leigh Miller | 3 |
| Scott Clarke | Porsche 944 Turbo | 15 | Ed Hubbard | 3 |
| Scott Clarke | Porsche 944 Turbo | 15 | Bernadette Hubbard | 3 |
| Scott Clarke | Porsche 944 Turbo | 16 | Bernadette Hubbard | 3 |
| Scott Clarke | Porsche 944 Turbo | 16 | Ludwig Heimrath, Jr. | 3 |
| Scott Clarke | Porsche 944 Turbo | 16 | Leigh Miller | 3 |
| Scott Clarke | Porsche 944 Turbo | 16 | Ken McKinnon | 3 |
| Scott Clarke | Porsche 944 Turbo | 16 | Tom Rathbun | 3 |
| Scott Clarke | Porsche 944 Turbo | 92 | Ludwig Heimrath, Jr. | 1 |
| Scott Clarke | Porsche 944 Turbo | 92 | Leigh Miller | 1 |
| Scott Clarke | Porsche 944 Turbo | 92 | Paul Reisman | 1 |
| Scott Clarke | Porsche 944 Turbo | 92 | Paul Lewis | 1 |
| Scott Clarke | Porsche 944 Turbo | 92 | John Reisman | 1 |
| Porsche Club Hildesheim | Porsche 964 Carrera 2 Cup | 27 | Edgar Dören | 1 |
| Porsche Club Hildesheim | Porsche 964 Carrera 2 Cup | 27 | Wolfgang Mathai | 1 |
| Porsche Club Hildesheim | Porsche 964 Carrera 2 Cup | 27 | Oliver Mathai | 1 |
| Cigarette Racing | Porsche 964 Carrera 2 Cup | 28 | Enzo Calderari | 1, 3 |
| Cigarette Racing | Porsche 964 Carrera 2 Cup | 28 | Sandro Angelastri | 1 |
| Cigarette Racing | Porsche 964 Carrera 2 Cup | 28 | Ronny Meixner | 1, 3 |
| Cigarette Racing | Porsche 964 Carrera 2 Cup | 28 | Luigino Pagotto | 1, 3 |
| Bernt Motorsport | Porsche 964 Carrera 2 Cup | 41 | Stig Amthor | 1, 3 |
| Bernt Motorsport | Porsche 964 Carrera 2 Cup | 41 | Andreas Fuchs | 1, 3 |
| Bernt Motorsport | Porsche 964 Carrera 2 Cup | 41 | Philippe de Craene | 1, 3 |
| Bernt Motorsport | Porsche 964 Carrera 2 Cup | 41 | Alfio Marchini | 1 |
| Bernt Motorsport | Porsche 964 Carrera 2 Cup | 41 | Oliver Kuttner | 1 |
| Antica A/B | Porsche 944 Turbo | 45 | Vito Scavone | 3, 7 |
| Antica A/B | Porsche 944 Turbo | 45 | Rich Hayward | 3 |
| Antica A/B | Porsche 944 Turbo | 45 | Terry Martel | 3 |
| Antica A/B | Porsche 944 Turbo | 45 | Heinz Wirth | 3 |
| Champion Porsche | Porsche 964 Carrera 2 Cup | 48 | Danny Marshall | 1 |
| Champion Porsche | Porsche 964 Carrera 2 Cup | 48 | Weldon Scrogham | 1 |
| Champion Porsche | Porsche 964 Carrera 2 Cup | 48 | John Biggs | 1 |
| Champion Porsche | Porsche 964 Carrera 2 Cup | 48 | Oliver Kuttner | 1, 3 |
| Champion Porsche | Porsche 964 Carrera 2 Cup | 48 | Justin Bell | 3 |
| Champion Porsche | Porsche 964 Carrera 2 Cup | 48 | Mike Peters | 3 |
| Brumos Porsche | Porsche 964 Turbo S LM | 59 | Hurley Haywood | 3 |
| Brumos Porsche | Porsche 964 Turbo S LM | 59 | Walter Röhrl | 3 |
| Brumos Porsche | Porsche 964 Turbo S LM | 59 | Hans-Joachim Stuck | 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Andy Pilgrim | 1, 3, 8 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | John Heinricy | 1, 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Stu Hayner | 1, 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Del Percilla | 1, 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Danny Kellermeyer | 1 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Scott Allman | 1 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Boris Said | 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Jim Minneker | 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93, 94 | Ron Nelson | 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93 | Ron Nelson | 1, 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93 | Don Knowles | 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93 | Ronny Meixner | 3 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93 | Del Percilla | 7 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 93 | Jim Minneker | 7-8 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 94 | Don Knowles | 1 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 94 | Andy Pilgrim | 7 |
| Morrison Motorsports | Chevrolet Corvette ZR-1 | 94 | John Heinricy | 7 |

#### International GT

A class for ACO-spec GT cars was introduced for the Road America and Laguna Seca races, but no cars appeared at Laguna Seca.
| Team | Car | No. | Drivers | Rounds |
| Jaguar Racing | Jaguar XJ220C TWR | 99 | Davy Jones | 8 |
| Jaguar Racing | Jaguar XJ220C TWR | 99 | Jay Cochran | 8 |

## Race results

| Rnd | Circuit | GTP/WSC Winning Team | GTP Lights Winning Team | GTS Winning Team | GTO Winning Team | GTU Winning Team |
| Rnd | Circuit | GTP/WSC Winning Driver(s) | GTP Lights Winning Driver(s) | GTS Winning Driver(s) | GTO Winning Driver(s) | GTU Winning Driver(s) |
| 1 | Daytona | #98 All American Racers | #36 Erie Scientific Company | #11 Roush Racing | did not participate | #82 Wendy's Race Team |
| 1 | Daytona | P. J. Jones Rocky Moran Mark Dismore | John Grooms Frank Jellinek Tim McAdam Jim Downing | Tommy Kendall Robby Gordon Wally Dallenbach Jr. Robbie Buhl | did not participate | Dick Greer Al Bacon Peter Uria Mike Mees |
| 2 | Miami | #99 All American Racers | #49 Comptech Racing | #3 Rocketsports Racing | #48 Lindley Racing | #97 Leitzinger Racing |
| 2 | Miami | Juan Manuel Fangio II | Parker Johnstone Ruggero Melgrati | Paul Gentilozzi | Les Lindley | Butch Leitzinger |
| 3 | Sebring | #99 All American Racers | #49 Comptech Racing | #1 Cunningham Racing | did not participate | #82 Wendy's Race Team |
| 3 | Sebring | Juan Manuel Fangio II Andy Wallace | Parker Johnstone Dan Marvin Ruggero Melgrati | Steve Millen Johnny O'Connell John Morton | did not participate | Dick Greer Al Bacon Peter Uria Mike Mees |
| 4 | Atlanta | #99 All American Racers | #49 Comptech Racing | did not participate | did not participate | did not participate |
| 4 | Atlanta | Juan Manuel Fangio II | Parker Johnstone Dan Marvin | did not participate | did not participate | did not participate |
| 5 | Lime Rock | #99 All American Racers | #49 Comptech Racing | did not participate | did not participate | did not participate |
| 5 | Lime Rock | Juan Manuel Fangio II | Parker Johnstone Dan Marvin | did not participate | did not participate | did not participate |
| 6 | Mid-Ohio | #99 All American Racers | #49 Comptech Racing | #5 Rocketsports Racing | #47 Charles Morgan | #97 Leitzinger Racing |
| 6 | Mid-Ohio | Juan Manuel Fangio II | Parker Johnstone Dan Marvin | Darin Brassfield | Charles Morgan | Butch Leitzinger |
| 7 | Watkins Glen | #99 All American Racers | #9 Brix Racing | #5 Rocketsports Racing | #48 Lindley Racing | #97 Leitzinger Racing |
| 7 | Watkins Glen | Juan Manuel Fangio II | Bob Earl Bob Schader | Darin Brassfield | Les Lindley | Butch Leitzinger |
| 8 | Road America | #7 Joest Racing | #49 Comptech Racing | #3 Rocketsports Racing | #47 Charles Morgan | #19 Auberlen Racing Concepts |
| 8 | Road America | Manuel Reuter "John Winter" | Parker Johnstone Dan Marvin | Paul Gentilozzi | Charles Morgan | Bill Auberlen |
| 9 | Laguna Seca | #98 All American Racers | #49 Comptech Racing | #76 Cunningham Racing | #47 Charles Morgan | #97 Leitzinger Racing |
| 9 | Laguna Seca | P. J. Jones | Parker Johnstone Dan Marvin | Johnny O'Connell | Charles Morgan | Butch Leitzinger |
| 10 | Portland | #99 All American Racers | #9 Brix Racing | #5 Rocketsports Racing | #17 Garfield's Auto | #97 Leitzinger Racing |
| 10 | Portland | Juan Manuel Fangio II | Bob Earl Bob Schader | Darin Brassfield | Joe Pezza | Butch Leitzinger |
| 11 | Phoenix | #98 All American Racers | #9 Brix Racing | #5 Rocketsports Racing | #17 Garfield's Auto | #97 Leitzinger Racing |
| 11 | Phoenix | P. J. Jones | Price Cobb Bob Schader | Darin Brassfield | Joe Pezza | Butch Leitzinger |

## Championship standings
### Drivers' Championships
#### GTP

| Pos. | Driver | DAY | MIA | SEB | ATL | LIM | MOH | WGL | ELK | LGA | POR | PHX | Points |
| 1 | Juan Manuel Fangio II | 4 | 1 | 1 | 1 | 1 | 1 | 1 | | 2 | 1 | 2 | 183 |
| 2 | P. J. Jones | 1 | 2 | 3 | 2 | 2 | 2 | 6 | | 1 | 2 | 1 | 168 |
| 3 | Giampiero Moretti | 3 | 4 | 2 | 6 | 5 | 3 | 4 | 4 | | 4 | 4 | 98 |
| 4 | Derek Bell | 3 | 4 | 2 | 6 | 5 | 3 | 4 | 4 | 4 | 4 | 4 | 88 |
| 5 | John Paul Jr. | 3 | | 2 | | 4 | | | 2 | 5 | 5 | 7 | 81 |
| 6 | Manuel Reuter | 7 | 6 | 6 | 5 | | | 2 | 1 | | | 3 | 74 |
| 7 | "John Winter" | 7 | 6 | 6 | 5 | | | 2 | 1 | | | 6 | 50 |
| 8 | David Tennyson | | 3 | 4 | 4 | | | | | | 3 | | 49 |
| 9 | Price Cobb | 2 | 3 | | | | | | | 3 | | | 47 |
| 11 | François Migault | DNS | | 4 | | | | | | | | | 41 |
| 12 | Wayne Taylor | | 5 | 7 | 7 | 6 | 4 | 5 | 3 | 6 | 6 | 5 | 39 |
| 13 | James Weaver | 2 | | DNS | | | | | | | | | 32 |
| 14 | Mark Dismore | 1 | | | | | | | | | | | 28 |
| 15 | Hugh Fuller | | | 4 | | | | 3 | | | | | 27 |
| 16 | Andy Wallace | 4 | | 1 | | | | | | | | | 25 |
| 17 | Rocky Moran | 1 | | 3 | | | | | | | | | 17 |
| 18 | Charles Slater | | | | | | | | 5 | 5 | 5 | 7 | 16 |
| 19 | Jay Cochran | 5 | | 8 | | 3 | | | | | | | 13 |
| 19 | Bob Wollek | 7 | | | 3 | | | | | | | 6 | 13 |
| 19 | Chris Cord | 8 | | 5 | | | | | | | | | 13 |
| 19 | Jim Adams | 8 | | 5 | | | | | | | | | 13 |
| 23 | Chris Hodgetts | | | | | | | 3 | | | | | 12 |
| 23 | Ronny Meixner | | | | 3 | | | | | | | | 12 |
| 25 | Massimo Sigala | 3 | 9 | | | | | | | 4 | | | 10 |
| 26 | Jeff Andretti | | 8 | 7 | | | | | | | | | 9 |
| 27 | Miroslav Jonak | | | | | | 5 | | | | | | 8 |
| 31 | Raul Boesel | | 7 | | | | | | | | | | 4 |
| 31 | Robs Lamplough | | | | | | | | | 7 | | | 4 |
| Colour | Result |
| Gold | Winner |
| Silver | Second place |
| Bronze | Third place |
| Green | Points finish |
| Blue | Non-points finish |
| Blue | Non-classified finish (NC) |
| Purple | Retired (Ret) |
| Red | Did not qualify (DNQ) |
| Red | Did not pre-qualify (DNPQ) |
| Black | Disqualified (DSQ) |
| White | Did not start (DNS) |
| White | Withdrew (WD) |
| White | Race cancelled (C) |
| Blank | Did not practice (DNP) |
| Blank | Did not arrive (DNA) |
| Blank | Excluded (EX) |

#### GTP Lights

| Pos. | Driver | DAY | MIA | SEB | ATL | LIM | MOH | WGL | ELK | LGA | POR | PHX | Points |
| 1 | Parker Johnstone | 9 | 1 | 1 | 1 | 1 | 1 | 7 | 1 | 1 | 2 | 6 | 168 |
| 2 | Bob Schader | 8 | 4 | 2 | 3 | | 3 | 1 | 2 | 2 | 1 | 1 | 148 |
| 3 | Dan Marvin | DNS | | 1 | 1 | 1 | 1 | DNS | 1 | 1 | 2 | DNS | 145 |
| 4 | Tim McAdam | 1 | 2 | 3 | 2 | 7 | 2 | 5 | 4 | 4 | 6 | 2 | 140 |
| 5 | Jim Downing | 1 | 2 | 3 | 2 | DNS | 2 | 5 | 4 | 4 | 6 | 2 | 139 |
| 6 | Bob Earl | 8 | 4 | 2 | 3 | 4 | 3 | 1 | 2 | 2 | 1 | | 127 |
| 7 | Mike Sheehan | 4 | | 4 | 4 | 2 | | 2 | 3 | 6 | 3 | 3 | 109 |
| 8 | Jim Pace | | | | 4 | 2 | 4 | 2 | 3 | DNS | | | 62 |
| 9 | Neil Jamieson | 7 | | 5 | 5 | | 5 | 3 | | 5 | 4 | 4 | 61 |
| 10 | Jeff Lapcevich | 7 | | 5 | | 3 | 5 | | | | 4 | 4 | 53 |
| 11 | Ruggero Melgrati | | 1 | 1 | | | | | | | | 7 | 46 |
| 12 | John Jones | 7 | | 5 | 5 | 3 | | 3 | | | | | 45 |
| 13 | John Grooms | 1 | | | | | | | | | | | 28 |
| 13 | Andy Evans | 5 | 3 | | | | | | | | | | 28 |
| 13 | Charles Morgan | 5 | 3 | | | | | | | | | | 28 |
| 13 | Miroslav Jonak | | | | | 5 | | 8 | 5 | 3 | 5 | 5 | 28 |
| 13 | Dick Sasser | | | | | | | | | 3 | 5 | 5 | 28 |
| 18 | Ross Bentley | 2 | | | | | | | | | | | 23 |
| 19 | Price Cobb | | | | | | | | | | | 1 | 21 |
| 20 | Fermín Vélez | 3 | 3 | | | | | | | | | | 20 |
| 20 | John Marconi | 3 | | | | | | | | | | | 20 |
| 20 | Jeremy Dale | | | 2 | | | | | | | | | 20 |
| 23 | Buddy Lazier | 4 | | | | | | | | | | | 18 |
| 24 | Philippe Favre | | | 4 | | | | | | | | | 15 |
| 25 | Butch Hamlet | | | | | | | | | | 3 | DNS | 12 |
| 25 | Michael Dow | | | | | | | | | | | 3 | 12 |
| 27 | Ed De Long | 6 | 8 | | 7 | 6 | 7 | 4 | | 5 | | | 10 |
| 27 | Nick Holmes | 6 | | | | | | 4 | | | | | 10 |
| 27 | Bobby Brown | | | | 7 | | 9 | 6 | 6 | | | | 10 |
| 27 | Ken Parschauer | | | | | | 4 | | | | | | 10 |
| 31 | Anthony Lazzaro | 4 | | 4 | 6 | | | | | | | | 6 |
| 31 | Sam Shalala | 4 | | 4 | 6 | | | | | | | | 6 |
| 31 | John Macaluso | 6 | | | | | | 6 | 6 | | | | 6 |
| 31 | Charles Monk | | | | | | 6 | | | | | | 6 |
| 31 | John Higgins | | | | | | 6 | | | | | | 6 |
| 36 | Steve Deeks | | | | | | 8 | | | | | | 3 |

#### WSC

WSC cars were counted as part of the GTP class for points standings.
| Pos. | Driver | MIA | ATL | LIM | MOH | WGL | ELK | LGA | POR | PHX | Points |
| 10 | Andy Evans | 2 | 1 | | | 1 | 1 | | 1 | 1 | 42 |
| 11 | François Migault | 2 | 1 | 1 | | 1 | | 2 | 1 | | 41 |
| 27 | Butch Hamlet | | | | | | | | | 2 | 8 |
| 27 | Jim Pace | | | | | | | | | 2 | 8 |
| 30 | David Rocha | | | | | | | | | 3 | 6 |
| 31 | Oliver Kuttner | | | | 2 | | 2 | 1 | 2 | | 4 |
| 34 | Brent O'Neill | 1 | | | 1 | 2 | | | | | 3 |

#### GTS

| Pos. | Driver | DAY | MIA | SEB | MOH | WGL | ELK | LGA | POR | PHX | Points |
| 1 | Tommy Kendall | 1 | 5 | 2 | 3 | 2 | 3 | 2 | 4 | 3 | 132 |
| 2 | Johnny O'Connell | 3 | 3 | 1 | 4 | 5 | 5 | 1 | 3 | 2 | 122 |
| 3 | Darin Brassfield | DNS | 4 | 4 | 1 | 1 | 6 | 4 | 1 | 1 | 121 |
| 4 | Paul Gentilozzi | DNS | 1 | 3 | 2 | 6 | 1 | 3 | 5 | 4 | 92 |
| 5 | Steve Millen | 3 | 2 | 1 | 5 | 4 | | | | | 68 |
| 6 | Scott Pruett | | | 4 | | | 2 | 7 | 2 | | 45 |
| 7 | Kent Painter | 6 | | 8 | | 3 | 4 | | | | 44 |
| 8 | John Fergus | 2 | | 2 | | | | | | | 43 |
| 9 | Bruce Trenery | 6 | | 8 | | 3 | | | | | 34 |
| 10 | Robbie Buhl | 1 | | | | | | | | | 28 |
| 10 | Wally Dallenbach Jr. | 1 | | DNS | | | | | | | 28 |
| 12 | Daniel Urrutia | 5 | | 7 | | | | | | | 25 |
| 13 | Jim Stevens | 2 | | | | | | | | | 23 |
| 14 | John Morton | 3 | | 1 | | | | | | | 20 |
| 15 | Bill Cooper | 4 | | | | | | | | | 18 |
| 15 | Joe Pezza | 4 | | | | | | | | | 18 |
| 15 | Jon Gooding | 4 | | | | | | | | | 18 |
| 18 | Calvin Fish | 20 | | 3 | | | | | | | 17 |
| 19 | Craig Rubright | 5 | | | | | | | | | 16 |
| 20 | Richard McDill | 19 | | 5 | | | | | | | 13 |
| 20 | Tom Juckette | 19 | | 5 | | | | | | | 13 |
| 22 | Andy Petery | 9 | | 6 | | | | | | | 11 |
| 22 | John Macaluso | | | 6 | | | | | | | 11 |
| 22 | Thomas Schweitz | DNS | | 6 | | | | | | | 11 |
| 25 | Gene Whipp | 5 | | 7 | | | | | | | 9 |
| 25 | Luis Sereix | | | 7 | | | | | | | 9 |
| 27 | Andrew Osman | 6 | | 8 | | | | | | | 8 |
| 27 | R.J. Gottlieb | | | | | | | 5 | | | 8 |
| 29 | Dick Downs | 7 | | 9 | | | | | | | 7 |
| 29 | Eddie Sharp | | | 9 | | | | | | | 7 |
| 29 | Eddie Sharp Jr. | | | 9 | | | | | | | 7 |
| 32 | Tommy Riggins | 12 | 6 | 10 | | | | | | | 6 |

#### GTO

| Pos. | Driver | MIA | MOH | WGL | ELK | LGA | POR | PHX | Points |
| 1 | Charles Morgan | | 1 | 4 | 1 | 1 | 3 | 2 | 97 |
| 2 | Ken Bupp | 5 | 2 | 5 | 7 | 4 | 2 | 3 | 68 |
| 3 | Joe Pezza | DNS | 4 | 9 | 2 | 7 | 1 | 1 | 65 |
| 3 | Joe Llauget | 2 | 3 | 7 | 3 | 6 | 4 | 6 | 65 |
| 5 | Les Lindley | 1 | 13 | 1 | 9 | 3 | 6 | 4 | 62 |
| 6 | Brian DeVries | | 12 | 2 | 6 | 2 | 5 | 8 | 33 |
| 7 | Dan Osterholt | 3 | 6 | 3 | 8 | | | | 30 |
| 7 | Nick Cole | 7 | 5 | 6 | 5 | | | 7 | 30 |
| 9 | Mark Porcaro | | 7 | 10 | 4 | | | | 14 |
| 10 | Clay Young | | | 3 | | | | | 12 |
| 11 | Deborah Gregg | 4 | | | | | | | 10 |
| 12 | Flip Groggins | 6 | | 8 | | | | | 9 |
| 13 | Casey Mollett | 19 | | | | | | 5 | 8 |
| 13 | Peter Uria | | | 5 | | | | | 8 |
| 13 | Chuck Kendall | | | | | 5 | | | 8 |
| 16 | Gary Smith | 8 | | | | | | | 3 |
| 16 | Lance Leonelli | 12 | 8 | | | | | 10 | 3 |
| 18 | Jim Briody | 9 | | | | | | | 2 |
| 18 | Bill Fuller | DNS | 11 | | | | | 9 | 2 |
| 18 | Robert Rose | | 9 | | | | | | 2 |
| 21 | Michael Dingman | 10 | | | | | | | 1 |
| 21 | Chip Boatright | | 10 | | | | | | 1 |

#### GTU

| Pos. | Driver | DAY | MIA | SEB | MOH | WGL | ELK | LGA | POR | PHX | Points |
| 1 | Butch Leitzinger | 3 | 1 | | 1 | 1 | 2 | 1 | 1 | 1 | 155 |
| 2 | Bob Leitzinger | 3 | 4 | 5 | 2 | 3 | 2 | 3 | 3 | 4 | 119 |
| 3 | Dick Greer | 1 | 8 | 1 | 4 | 5 | 5 | 4 | 4 | 5 | 107 |
| 4 | Bill Auberlen | 7 | 2 | 7 | 6 | 2 | 1 | 2 | 5 | 3 | 100 |
| 5 | Eduardo Dibós | 6 | 3 | 7 | 12 | 4 | 7 | 7 | 2 | 2 | 65 |
| 6 | Peter Uria | 1 | | 1 | | | 10 | | | | 53 |
| 6 | Al Bacon | 1 | | 1 | | | | | | | 53 |
| 8 | Bill Ferran | | | 2 | 10 | 6 | 6 | | | | 33 |
| 9 | Charles Slater | 5 | | 2 | 13 | 6 | 10 | | | 6 | 32 |
| 10 | Reed Kryder | 10 | DNS | 3 | 7 | 7 | 9 | | | 7 | 29 |
| 11 | Henry Camferdam | 8 | | | 3 | 10 | 3 | | | 8 | 27 |
| 12 | Anthony Lazzaro | 2 | | | | | | | | | 23 |
| 12 | Omar Daniel | 2 | | | | | | | | | 23 |
| 14 | Butch Hamlet | 5 | | 2 | | | | | | | 20 |
| 15 | Henry Taleb | 4 | 6 | | | | | | | | 18 |
| 16 | Guy Kuster | 10 | | 3 | | | 9 | | | | 17 |
| 17 | Curt Catallo | | | 4 | | | | | | | 15 |
| 17 | Ernie Lader | | | 4 | | | | | | | 15 |
| 17 | Haas Fogle | | | 4 | | | | | | | 15 |
| 20 | Don Knowles | | | 5 | | | | | | | 13 |
| 21 | Jack Lewis | 9 | | | 8 | 8 | 6 | | | | 12 |
| 21 | Joe Cogbill | 9 | | | | 9 | 4 | | | | 12 |
| 21 | Jay Kjoller | | | | | 9 | 4 | | | | 12 |
| 24 | Mel Butt | | | 6 | | | | | | | 11 |
| 24 | Ron Zitza | | | 6 | | | | | | | 11 |
| 24 | Tommy Johnson | | | 6 | | | | | | | 11 |
| 27 | Tony Canahuate | | 5 | | | | | | | | 8 |
| 27 | Eduardo Pellerano | | | | 5 | | 8 | | | | 8 |
| 27 | John Goddard | | | | | | | 5 | 7 | | 8 |
| 30 | Monte Shelton | | | | | | | | 6 | | 6 |
| 31 | Stephen Hynes | 9 | | | | 8 | | | | | 3 |
| 32 | James O'Connell | | | | 9 | | | | | | 2 |