1966 (Champion: Horst Kwech (AUS)/Gaston Andrey (USA)-Alfa Romeo GTA)
1. Sebring (USA), Mar 25-Jochen Rindt (A)-Alfa Romeo GTA #36
2. Mid-America (USA), Jun 12-Bob Johnson (USA)/Tom Yeager (USA)-Ford Mustang #56
3. Bryar (USA), Jul 10-Allan Moffat (CDN)-Ford Lotus Cortina #NUM
4. Danville (USA), Jul 31-Bob Johnson (USA)/Tom Yeager (USA)-Ford Mustang #34
5. Marlboro (USA), Aug 14-Tony Adamowicz (USA)/Bob Tullius (USA)-Dodge Dart #4
6. Green Valley (USA), Sep 10-Brad Brooker (USA)/John McComb (USA)-Ford Mustang #33
7. Riverside (USA), Sep 18-Jerry Titus (USA)-Ford Mustang #1

1967 (Champion: Jerry Titus)
1. Daytona (USA), Feb 3-Bob Tullius (USA)-Dodge Dart #44
2. Sebring (USA), Mar 31-Jerry Titus (USA)-Ford Mustang #17
3. Green Valley (USA), Apr 16-Dan Gurney (USA)-Mercury Cougar #98
4. Lime Rock (USA), May 30-Peter Revson (USA)-Mercury Cougar #NUM
5. Mid-Ohio (USA), Jun 11-Jerry Titus (USA)-Ford Mustang #17
6. Bryar (USA), Aug 6-Peter Revson (USA)-Mercury Cougar #15
7. Marlboro (USA), Aug 12-Mark Donohue (USA)/Craig Fisher (USA)-Chevrolet Camaro #36
8. Continental Divide (USA)-Aug 27-Jerry Titus (USA)-Ford Mustang #17
9. Modesto (USA), Sep 9-Jerry Titus (USA)-Ford Mustang #17
10. Riverside (USA), Sep 17-David Pearson (USA)-Mercury Cougar #15
11. Stardust (USA), Oct 1-Mark Donohue (USA)-Chevrolet Camaro #6
12. Seattle (USA), Oct 8-Mark Donohue (USA)-Chevrolet Camaro #6

1968 (Champion: Mark Donohue)
1. Daytona (USA), Feb 3-Ronnie Bucknum (USA)/Jerry Titus (USA)-Ford Mustang
2. Sebring (USA), Mar 23-Mark Donohue (USA)/Craig Fisher (USA)-Chevrolet Camaro
3. War Bonnet (USA), May 12-Mark Donohue (USA)-Chevrolet Camaro
4. Lime Rock (USA), May 30-Mark Donohue (USA)-Chevrolet Camaro
5. Mid-Ohio (USA), Jun 16-Mark Donohue (USA)-Chevrolet Camaro
6. Bridgehampton (USA), Jun 23-Mark Donohue (USA)-Chevrolet Camaro
7. Meadowdale (USA), Jul 7-Mark Donohue (USA)-Chevrolet Camaro
8. Mont Tremblant (CDN), Jul 21-Mark Donohue (USA)-Chevrolet Camaro
9. Bryar (USA), Aug 4-Mark Donohue (USA)-Chevrolet Camaro
10. Watkins Glen (USA), Aug 11-Jerry Titus (USA)-Ford Mustang
11. Continental Divide (USA)-Aug 25-Mark Donohue (USA)-Chevrolet Camaro
12. Riverside (USA), Sep 8-Horst Kwech (AUS)-Ford Mustang
13. Seattle (USA), Oct 5-Mark Donohue (USA)-Chevrolet Camaro

1969 (Champion: Mark Donohue)
1. Michigan (USA), May 11-Parnelli Jones (USA)-Ford Mustang
2. Lime Rock (USA), May 30-Sam Posey (USA)-Ford Mustang
3. Mid-Ohio (USA), Jun 8-Ronnie Bucknum (USA)-Chevrolet Camaro
4. Bridgehampton (USA), Jun 22-George Follmer (USA)-Ford Mustang
5. Brainerd (USA), Jul 6-Parnelli Jones (USA)-Ford Mustang
6. Bryar (USA), Jul 20-Mark Donohue (USA)-Chevrolet Camaro
7. Mont Tremblant (CDN), Aug 3-Mark Donohue (USA)-Chevrolet Camaro
8. Watkins Glen (USA), Aug 10-Mark Donohue (USA)-Chevrolet Camaro
9. Laguna Seca (USA), Apr 24-Mark Donohue (USA)-Chevrolet Camaro
10. Seattle (USA), Sep 7-Ronnie Bucknum (USA)-Chevrolet Camaro
11. Sears Point (USA), Sep 21-Mark Donohue (USA)-Chevrolet Camaro
12. Riverside (USA), Oct 5-Mark Donohue (USA)-Chevrolet Camaro

1970 (Champion: Parnelli Jones)
1. Laguna Seca (USA), Apr 19-Parnelli Jones (USA)-Ford Mustang
2. Lime Rock (USA), May 9-Parnelli Jones (USA)-Ford Mustang
3. Bryar (USA), May 31-George Follmer (USA)-Ford Mustang
4. Mid-Ohio (USA), Jun 7-Parnelli Jones (USA)-Ford Mustang
5. Bridgehampton (USA), Jun 21-Mark Donohue (USA)-AMC Javelin
6. Brainerd (USA), Jul 5-Milt Mintner (USA)-Chevrolet Camaro
7. Road America (USA), Jul 19-Mark Donohue (USA)-AMC Javelin
8. Mont Tremblant (CDN), Aug 2-Mark Donohue (USA)-AMC Javelin
9. Watkins Glen (USA), Aug 16-Vic Elford (GB)-Chevrolet Camaro
10. Seattle (USA), Sep 20-Parnelli Jones (USA)-Ford Mustang
11. Riverside (USA), Oct 4-Parnelli Jones (USA)-Ford Mustang

1971 (Champion: Mark Donohue)
1. Lime Rock (USA), May 8-Mark Donohue (USA)-AMC Javelin
2. Bryar (USA), May 31-George Follmer (USA)-Ford Mustang
3. Mid-Ohio (USA), Jun 6-George Follmer (USA)-Ford Mustang
4. Edmonton (CDN), Jun 20-Mark Donohue (USA)-AMC Javelin
5. Brainerd (USA), Jul 4-Mark Donohue (USA)-AMC Javelin
6. Road America (USA), Jul 17-Mark Donohue (USA)-AMC Javelin
7. Mont Tremblant (CDN), Aug 1-Mark Donohue (USA)-AMC Javelin
8. Watkins Glen (USA), Aug 15-Mark Donohue (USA)-AMC Javelin
9. Brooklyn (USA), Sep 6-Mark Donohue (USA)-AMC Javelin
10. Riverside (USA), Oct 4-George Follmer (USA)-AMC Javelin

1972 (Champion: George Follmer)
1. Lime Rock (USA), May 6-George Follmer (USA)-AMC Javelin
2. Bryar (USA), May 29-George Follmer (USA)-AMC Javelin
3. Mid-Ohio (USA), Jun 4-Milt Mintner (USA)-Pontiac Firebird
4. Watkins Glen (USA), Jun 17-George Follmer (USA)-AMC Javelin
5. Brainerd (USA), Jul 2-George Follmer (USA)-AMC Javelin
6. Road America (USA), Jul 16-Warren Tope (USA)-Ford Mustang
7. Sanair (CDN, Jul 30-Warren Tope (USA)-Ford Mustang

1973 (Champion: Peter Gregg)
1. Road Atlanta (USA), Mar 15-Peter Gregg (USA)-Porsche Carerra RS
2. Lime Rock (USA), May 5-Milt Mintner (USA)-Porsche Carrera RS
3. Watkins Glen (USA), Jun 16-Maurice Carter (USA)-Chevrolet Camaro
4. Sanair (CDN, Jul 15-Warren Agor (USA)-Chevrolet Camaro
5. Road America (USA), Jul 28-John Greenwood (USA)-Chevrolet Corvette
6. Edmonton (CDN), Aug 19-John Greenwood (USA)-Chevrolet Corvette

1974 (Champion: Peter Gregg)
1. Lime Rock (USA), May 4-Al Holbert (USA)-Porsche Carrera RSR
2. Watkins Glen (USA), Jul 13-Peter Gregg (USA)/Hurley Haywood (USA)-Porsche Carrera RSR
3. Road America (USA), Jul 27-Peter Gregg (USA)-Porsche Carerra RSR

1975 (Champion: John Greenwood)
1. Pocono (USA), Jun 1-John Greenwood (USA)-Chevrolet Corvette
2. Seattle (USA), Jun 1-Walt Maas (USA)-Datsun 280Z
3. Portland (USA), Jun 15-John Greenwood (USA)-Chevrolet Corvette
4. Nelson Ledges (USA), Jun 29-John Greenwood (USA)-Chevrolet Corvette
5. Watkins Glen (USA), Jul 13-Bob Hagestad (USA)/Hurley Haywood (USA)-Porsche Carrera RSR
6. Road America (USA), Jul 26-Jerry Hansen (USA)-Chevrolet Corvette
7. Brainerd (USA), Sep 7-Jerry Hansen (USA)-Chevrolet Corvette

1976 (Champion: George Follmer)
1. Pocono (USA), May 9-Hurley Haywood (USA)-Porsche 934
2. Nelson Ledges (USA), May 30-George Follmer (USA)-Porsche 934
3. Portland (USA), Jun 13-Monte Shelton (USA)-Porsche Carrera RSR
4. Watkins Glen (USA), Jul 10-Peter Gregg (USA)/Hurley Haywood (USA)-BMW CSL
5. Road America (USA), Jul 24-Carl Schafer (USA)-Chevrolet Camaro
6. Brainerd (USA), Aug 15-Carl Schafer (USA)-Chevrolet Camaro
7. Mosport (CDN), Aug 21-Ludwig Heimrath (CDN)-Porsche Carrera RSR
8. Trois-Rivieres (CDN), Sep 5-George Follmer (USA)-Porsche 934

1977 (Champion: Ludwig Heimrath)
1. Seattle (USA), May 30-Ludwig Heimrath (CDN)-Porsche 934
2. Westwood (CDN), Jun 5-Peter Gregg (USA)-Porsche 934
3. Portland (USA), Jun 12-George Follmer (USA)-Porsche 934
4. Nelson Ledges (USA), Jun 26-Bob Hagestad (USA)-Porsche 934
5. Watkins Glen (USA), Jul 9-Bob Hagestad (USA)/Hurley Haywood (USA)-Porsche Carrera RSR
6. Hallett (USA), Jul 31-Peter Gregg (USA)-Porsche 934
7. Brainerd (USA), Aug 14-Peter Gregg (USA)-Porsche 934
8. Mosport (USA), Aug 20-Peter Gregg (USA)/Bob Wollek (F)-Porsche 934
9. Road America (USA), race 1 (Sep 3)-Ludwig Heimrath (CDN)-Porsche 934
10. Road America (USA), race 2 (Sep 4)-Peter Gregg (USA)-Porsche 934
11. St Jovite (CDN), Sep 11-Peter Gregg (USA)-Porsche 934

1978 (Champion: Greg Pickett)
1. Sears Point (USA), May 21-Greg Pickett (USA)-Chevrolet Corvette
2. Westwood (USA), Jun 4-Ludwig Heimrath (CDN)-Porsche 935
3. Portland (USA), Jun 11-Tuck Thomas (USA)-Chevrolet Monza
4. St Jovite (CDN), Jun 25-Monte Shelton (USA)-Porsche 935
5. Watkins Glen (USA), Jul 8-Hal Shaw (USA)/Monte Shelton (USA)-Porsche 935
6. Brainerd (USA), Aug 13-Jerry Hansen (USA)-Chevrolet Monza
7. Mosport (CDN), Aug 19-Greg Pickett (USA)-Chevrolet Corvette
8. Road America (USA), Sep 4-Greg Pickett (USA)-Chevrolet Corvette
9. Laguna Seca (USA), Oct 8-Greg Pickett (USA)-Chevrolet Corvette
10. Mexico City (MEX), Nov 5-Ludwig Heimrath (CDN)-Porsche 935

1979 (Champion: John Paul)
1. Mexico City (MEX), May 5-John Paul (USA)-Porsche 935
2. Westwood (CDN), Jun 3-John Paul (USA)-Porsche 935
3. Portland (USA), Jun 10-John Paul (USA)-Porsche 935
4. Watkins Glen (USA), Jul 8-John Paul (USA)-Porsche 935
5. Road America (USA), Jul 21-Peter Gregg (USA)-Porsche 935
6. Watkins Glen (USA), Aug 5-John Paul (USA)-Porsche 935
7. Mosport (CDN), Aug 19-John Paul (USA)-Porsche 935
8. Trois-Rivieres (CDN), Sep 1-John Paul (USA)-Porsche 935
9. Laguna Seca (USA), Oct 14-Peter Gregg (USA)-Porsche 935

1980 (Champion: John Bauer)
1. Hallett (USA), Jun 1-John Bauer (USA)-Porsche 911SC
2. Portland (USA), Jun 15-Mark Pielsticker (USA)-Chevrolet Monza
3. Watkins Glen (USA), Jul 6-John Bauer (USA)/Larry Green (USA)-Porsche 911SC
4. Road America (USA), Jul 19-Monte Shelton (USA)-Porsche 911SC
5. Brainerd (USA), Aug 10-John Bauer (USA)-Porsche 911SC
6. Trois-Rivieres (CDN), Aug 23-Roy Woods (USA)-Chevrolet Camaro
7. Westwood (CDN), Sep 7-John Bauer (USA)-Porsche 911SC
8. Laguna Seca (USA), Oct 19-Greg Pickett (USA)-Chevrolet Corvette
9. Riverside (USA), Oct 25-Greg Pickett (USA)-Chevrolet Corvette

1981 (Champion: Eppie Wietzes)
1. Charlotte (USA), May 17-Eppie Wietzes (CDN)-Chevrolet Corvette
2. Portland (USA), Jun 14-Bob Tullius (USA)-Jaguar XJS
3. Lime Rock (USA), Jul 4-Greg Pickett (USA)-Chevrolet Corvette
4. Road America (USA), Jul 26-Monte Shelton (USA)-Porsche 930
5. Brainerd (USA), Aug 9-Bob Tullius (USA)-Jaguar XJS
6. Trois-Rivieres (CDN), Sep 6-Eppie Wietzes (CDN)-Chevrolet Corvette
7. Mosport (CDN), Sep 12-Bob Tullius (USA)-Jaguar XJS
8. Laguna Seca (USA), Oct 11-George Follmer (USA)-Chevrolet Camaro
9. Sears Point (USA), Oct 25-Tom Gloy (USA)-Ford Mustang

1982 (Champion: Elliott Forbes-Robinson)
1. Road Atlanta (USA), May 16-Jerry Hansen (USA)-Chevrolet Corvette
2. Sears Point (USA), Jun 6-Doc Bundy (USA)-Porsche 924 Turbo
3. Portland (USA), Jun 13-Doc Bundy (USA)-Porsche 924 Turbo
4. Laguna Seca (USA), Jun 27-Elliot Forbes-Robinson (USA)-Pontiac Trans-Am
5. Seattle (USA), Jul 4-Elliot Forbes-Robinson (USA)-Pontiac Trans-Am
6. Mid-Ohio (USA), Jul 18-Elliot Forbes-Robinson (USA)-Pontiac Trans-Am
7. Road America (USA), Jul 24-Jerry Hansen (USA)-Chevrolet Corvette
8. Brainerd (USA), Aug 8-Paul Newman (USA)-Datsun 280ZX
9. Trois-Rivieres (CDN), Sep 5-Elliot Forbes-Robinson (USA)-Pontiac Trans-Am
10. Sears Point (USA), Oct 3-Tom Gloy (USA)-Ford Mustang

1983 (Champion: David Hobbs)
1. Moroso (USA), May 1-Gene Felton (USA)-Pontiac Trans-Am
2. Summit Point (USA), May 15-David Hobbs (GB)-Chevrolet Camaro
3. Sears Point (USA), Jun 5-David Hobbs (GB)-Chevrolet Camaro
4. Portland (USA), Jun 12-Willy T Ribbs (USA)-Chevrolet Camaro
5. Seattle (USA), Jun 26-Elliot Forbes-Robinson (USA)-Pontiac Trans-Am
6. Mid-Ohio (USA), Jul 17-Willy T Ribbs (USA)-Chevrolet Camaro
7. Road America (USA), Jul 31-David Hobbs (GB)-Chevrolet Camaro
8. Brainerd (USA), Aug 8-Willy T Ribbs (USA)-Chevrolet Camaro
9. Trois-Rivieres (CDN), Sep 4-John Paul Jr (USA)-Chevrolet Camaro
10. Sears Point (USA), Sep 18-Willy T Ribbs (USA)-Chevrolet Camaro
11. Riverside (USA), Sep 25-David Hobbs (GB)-Chevrolet Camaro
12. Caesar’s Palace (USA), Oct 8-Willy T Ribbs (USA)-Chevrolet Camaro

1984 (Champion: Tom Gloy)
1. Road Atlanta (USA), May 6-Darin Brassfield (USA)-Chevrolet Corvette
2. Summit Point (USA), May 20-Bob Lobenberg (USA)-Pontiac Trans-Am
3. Sears Point (USA), Jun 3-Greg Pickett (USA)-Mercury Capri
4. Portland (USA), Jun 16-Greg Pickett (USA)-Mercury Capri
5. Detroit (USA), Jun 23-Tom Gloy (USA)-Mercury Capri
6. Daytona (USA), Jul 3-Willy T Ribbs (USA)-Mercury Capri
7. Brainerd (USA), Jul 22-Willy T Ribbs (USA)-Mercury Capri
8. Road America (USA), Aug 5-Rob Spenard (USA)-Chevrolet Corvette
9. Watkins Glen (USA), Aug 19-Willy T Ribbs (USA)-Mercury Capri
10. Trois-Rivieres (CDN), Sep 2-Tom Gloy (USA)-Mercury Capri
11. Mosport (CDN), Sep 9-Paul Miller (USA)-Porsche 911 Turbo
12. Seattle (USA), Sep 23-Greg Pickett (USA)-Mercury Capri
13. Sears Point (USA), Sep 30-Greg Pickett (USA)-Mercury Capri
14. Riverside (USA), Oct 7-Darin Brassfield (USA)-Chevrolet Corvette
15. Green Valley (USA), Oct 28-Willy T Ribbs (USA)-Mercury Capri
16. Caesar’s Palace (USA), Nov 11-Tom Gloy (USA)-Mercury Capri

1985 (Champion: Wally Dallenbach Jr)
1. Firebird (USA), Apr 21-Willy T Ribbs (USA)-Mercury Capri
2. Sears Point (USA), Jun 2-Willy T Ribbs (USA)-Mercury Capri
3. Portland (USA), Jun 16-Wally Dallenbach Jr (USA)-Mercury Capri
4. Detroit (USA), Jun 22-Elliott Forbes-Robinson (USA)-Buick Somerset
5. Summit Point (USA), Jul 7-Willy T Ribbs (USA)-Mercury Capri
6. Mid-Ohio (USA), Jul 14-Wally Dallenbach Jr (USA)-Mercury Capri
7. Brainerd (USA), Jul 21-Willy T Ribbs (USA)-Mercury Capri
8. Road America (USA), Aug 4-Willy T Ribbs (USA)-Mercury Capri
9. Lime Rock (USA), Aug 10-Paul Miller (USA)-Porsche 911 Turbo
10. Watkins Glen (USA), Aug 17-Wally Dallenbach Jr (USA)-Mercury Capri
11. Trois-Rivieres (CDN), Sep 1-Willy T Ribbs (USA)-Mercury Capri
12. Mosport (CDN), Sep 8-Wally Dallenbach Jr (USA)-Mercury Capri
13. St Louis (USA), Sep 15-Wally Dallenbach Jr (USA)-Mercury Capri
14. Sears Point (USA), Sep 29-Elliott Forbes-Robinson (USA)-Buick Somerset
15. St Petersburg (USA), Nov 3-Willy T Ribbs (USA)-Mercury Capri

1986 (Champion: Wally Dallenbach Jr)
1. Riverside (USA), May 18-Scott Pruett (USA)-Mercury Capri
2. Sears Point (USA), Jun 1-Wally Dallenbach Jr (USA)-Chevrolet Camaro
3. Portland (USA), Jun 14-Wally Dallenbach Jr (USA)-Chevrolet Camaro
4. Detroit (USA), Jun 21-Wally Dallenbach Jr (USA)-Chevrolet Camaro
5. Mid-Ohio (USA), Jul 4-Greg Pickett (USA)-Chevrolet Camaro
6. Brainerd (USA), Jul 20-Greg Pickett (USA)-Chevrolet Camaro
7. Road America (USA), Jul 27-Pete Halsmer (USA)-Mercury Merkur XR4Ti
8. Lime Rock (USA), Aug 16-Paul Newman (USA)-Nissan 300ZX Turbo
9. Mosport (CDN), Sep 14-Scott Pruett (USA)-Mercury Capri
10. Sears Point (USA), Sep 28-Wally Dallenbach Jr (USA)-Chevrolet Camaro
11. Road Atlanta (USA), Oct 12-Chris Kneifel (USA)-Mercury Merkur XR4Ti
12. Tamiami Park (USA), Nov 4-Klaus Ludwig (D)-Mercury Merkur XR4Ti
13. St Petersburg (USA), Nov 15-Pete Halsmer (USA)-Mercury Merkur XR4Ti

1987 (Champion: Scott Pruett)
1. Long Beach (USA), Apr 4-Scott Pruett (USA)-Mercury Merkur XR4Ti
2. Sears Point (USA), May 31-Scott Pruett (USA)-Mercury Merkur XR4Ti
3. Portland (USA), Jun 7-Pete Halsmer (USA)-Mercury Merkur XR4Ti
4. Detroit (USA), Jun 20-Scott Pruett (USA)-Mercury Merkur XR4Ti
5. Mid-Ohio (USA), Jul 12-Scott Pruett (USA)-Mercury Merkur XR4Ti
6. Brainerd (USA), Jul 19-Elliott Forbes-Robinson (USA)-Porsche 944
7. Lime Rock (USA), Aug 1-Pete Halsmer (USA)-Mercury Merkur XR4Ti
8. Road America (USA), Aug 29-Pete Halsmer (USA)-Mercury Merkur XR4Ti
9. Memphis (USA), Sep 13-Scott Pruett (USA)-Mercury Merkur XR4Ti
10. Mosport (CDN), Sep 20-Scott Pruett (USA)-Mercury Merkur XR4Ti
11. Road Atlanta (USA), Oct 11-Pete Halsmer (USA)-Mercury Merkur XR4Ti
12. St Petersburg (USA), Nov 8-Scott Pruett (USA)-Mercury Merkur XR4Ti

1988 (Champion: Hurley Haywood)
1. Long Beach (USA), Apr 16-Paul Gentilozzi (USA)-Oldsmobile Cutlass
2. Dallas (USA), May 1-Hurley Haywood (USA)-Audi Quattro
3. Sears Point (USA), May 29-Willy T Ribbs (USA)-Chevrolet Camaro
4. Detroit (USA), Jun 18-Hurley Haywood (USA)-Audi Quattro
5. Niagara Falls (USA), Jun 26-Walter Rohrl (D)-Audi Quattro
6. Cleveland (USA), Jul 2-Hans-Joachim Stuck (D)-Audi Quattro
7. Brainerd (USA), Jul 17-Hans-Joachim Stuck (D)-Audi Quattro
8. Meadowlands (USA), Jul 23-Hans-Joachim Stuck (D)-Audi Quattro
9. Lime Rock (USA), Aug 6-Scott Pruett (USA)-Mercury Merkur XR4Ti
10. Mid-Ohio (USA), Sep 3-Hans-Joachim Stuck (D)-Audi Quattro
11. Road America (USA), Sep 10-Scott Pruett (USA)-Mercury Merkur XR4Ti
12. Mosport (CDN), Sep 25-Darin Brassfield (USA)-Chevrolet Corvette
13. St Petersburg (USA), Oct 23-Walter Rohrl (D)-Audi Quattro

1989 (Champion: Dorsey Schroeder)
1. Long Beach (USA), Apr 14-Irv Hoerr (USA)-Oldsmobile Cutlass
2. Sears Point (USA), May 7-Darin Brassfield (USA)-Chevrolet Corvette
3. Dallas (USA), May 14-Dorsey Schroeder (USA)-Ford Mustang
4. Detroit (USA), Jun 17-Greg Pickett (USA)-Chevrolet Corvette
5. Cleveland (USA), Jul 1-Irv Hoerr (USA)-Oldsmobile Cutlass
6. Des Moines (USA), Jul 9-Dorsey Schroeder (USA)-Ford Mustang
7. Brainerd (USA), Jul 23-Irv Hoerr (USA)-Oldsmobile Cutlass
8. Lime Rock (USA), Aug 5-Dorsey Schroeder (USA)-Ford Mustang
9. Road Atlanta (USA), Aug 20-Dorsey Schroeder (USA)-Ford Mustang
10. Mid-Ohio (USA), Sep 2-Dorsey Schroeder (USA)-Ford Mustang
11. Road America (USA), Sep 9-Dorsey Schroeder (USA)-Ford Mustang
12. Mosport (CDN), Sep 24-Ron Fellows (CDN)-Ford Mustang
13. Heartland Park (USA), Oct 15-Max Jones (USA)-Chevrolet Beretta
14. St Petersburg (USA), Oct 29-Irv Hoerr (USA)-Oldsmobile Cutlass

1990 (Champion: Tom Kendall)
1. Phoenix (USA), Mar 10-Robert Lappalainan (FIN)-Ford Mustang
2. Sears Point (USA), May 6-Darin Brassfield (USA)-Oldsmobile Cutlass
3. Dallas (USA), Jun 3-Irv Hoerr (USA)-Oldsmobile Cutlass
4. Detroit (USA), Jun 16-Scott Sharp (USA)-Oldsmobile Cutlass
5. Portland (USA), Jun 23-Darin Brassfield (USA)-Oldsmobile Cutlass
6. Cleveland (USA), Jul 7-Tom Kendall (USA)-Chevrolet Beretta
7. Des Moines (USA), Jul 15-Tom Kendall (USA)-Chevrolet Beretta
8. Road Atlanta (USA), Jul 29-Tom Kendall (USA)-Chevrolet Beretta
9. Watkins Glen (USA)-Chris Kneifel (USA)-Chevrolet Beretta
10. Trois-Rivieres (CDN), Aug 19-Tom Kendall (USA)-Chevrolet Beretta
11. Denver (USA), Aug 25-Tom Kendall (USA)-Chevrolet Beretta
12. Mosport (CDN), Sep 9-Dorsey Schroeder (USA)-Ford Mustang
13. Mid-Ohio (USA), Sep 15-Darin Brassfield (USA)-Oldsmobile Cutlass
14. Road America (USA), Sep 22-Tom Kendall (USA)-Chevrolet Beretta
15. St Petersburg (USA), Nov 4-Chris Kneifel (USA)-Chevrolet Beretta

1991 (Champion: Scott Sharp)
1. Sears Point (USA), May 5-Darin Brassfield (USA)-Oldsmobile Cutlass
2. Mexico City (MEX), May 19-Scott Sharp (USA)-Chevrolet Camaro
3. Dallas (USA), Jun 2-Irv Hoerr (USA)-Oldsmobile Cutlass
4. Detroit (USA), Jun 15-Scott Sharp (USA)-Chevrolet Camaro
5. Portland (USA), Jun 22-Irv Hoerr (USA)-Oldsmobile Cutlass
6. Cleveland (USA), Jul 6-Darin Brassfield (USA)-Oldsmobile Cutlass
7. Des Moines (USA), Jul 14-George Robinson (USA)-Chevrolet Camaro
8. Watkins Glen (USA), Aug 10-Scott Sharp (USA)-Chevrolet Camaro
9. Trois-Rivieres (CDN), Aug 18-Scott Sharp (USA)-Chevrolet Camaro
10. Denver (USA), Aug 24-Irv Hoerr (USA)-Oldsmobile Cutlass
11. Mosport (CDN), Sep 8-Scott Sharp (USA)-Chevrolet Camaro
12. Mid-Ohio (USA), Sep 14-Darin Brassfield (USA)-Oldsmobile Cutlass
13. Road America (USA), Sep 21-Scott Sharp (USA)-Chevrolet Camaro
14. Texas (USA), Oct 20-Jack Baldwin (USA)-Chevrolet Camaro

1992 (Champion: Jack Baldwin)
1. Long Beach (USA), Apr 11-Robby Gordon (USA)-Ford Mustang
2. Detroit Belle Isle (USA), Jun 6-Tommy Archer (USA)-Dodge Daytona
3. Portland (USA), Jun 20-Paul Gentilozzi (USA)-Chevrolet Camaro
4. Mosport (CDN), Jun 28-Scott Sharp (USA)-Chevrolet Camaro
5. Des Moines (USA), Jul 12-Scott Sharp (USA)-Chevrolet Camaro
6. Lime Rock (USA), Jul 25-Ron Fellows (CDN)-Ford Mustang
7. Watkins Glen (USA), Aug 8-Jack Baldwin (USA)-Chevrolet Camaro
8. Trois-Rivieres (CDN), Aug 16-Jack Baldwin (USA)-Chevrolet Camaro
9. Road America (USA), Aug 22-Ron Fellows (CDN)-Ford Mustang
10. Mid-Ohio (USA), Sep 12-Greg Pickett (USA)-Chevrolet Camaro
11. Sears Point (USA), Oct 4-Darin Brassfield (USA)-Chevrolet Camaro

1993 (Champion: Scott Sharp)
1. Long Beach (USA), Apr 18-Ron Fellows (CDN)-Ford Mustang
2. Road Atlanta (USA), May 9-Ron Fellows (CDN)-Ford Mustang
3. Detroit Belle Isle (USA), Jun 12-Dorsey Schroeder (USA)-Ford Mustang
4. Mosport (CDN), Jun 20-Scott Sharp (USA)-Chevrolet Camaro
5. Portland (USA), Jun 26-Ron Fellows (CDN)-Ford Mustang
6. Sears Point (USA), Jul 4-Scott Sharp (USA)-Chevrolet Camaro
7. Toronto (CDN), Jul 17-Scott Sharp (USA)-Chevrolet Camaro
8. Lime Rock (USA), Jul 24-Tommy Archer (USA)-Dodge Daytona
9. Watkins Glen (USA), Aug 7-Scott Sharp (USA)-Chevrolet Camaro
10. Trois-Rivieres (CDN), Aug 15-Scott Sharp (USA)-Chevrolet Camaro
11. Road America (USA), Aug 21-Scott Sharp (USA)-Chevrolet Camaro
12. Mid-Ohio (USA), Sep 11-Jack Baldwin (USA)-Chevrolet Camaro
13. Dallas (USA), Sep 19-Jack Baldwin (USA)-Chevrolet Camaro

1994 (Champion: Scott Pruett)
1. Miami (USA), Feb 27-Tom Kendall (USA)-Ford Mustang
2. Mosport (CDN), May 22-Scott Pruett (USA)-Chevrolet Camaro
3. Mid-Ohio (USA), Jun 5-Tom Kendall (USA)-Ford Mustang
4. Detroit Belle Isle (USA), Jun 11-Ron Fellows (CDN)-Ford Mustang
5. Portland (USA), Jun 25-Ron Fellows (CDN)-Ford Mustang
6. Des Moines (USA), Jul 4-Dorsey Schroeder (USA)-Ford Mustang
7. Cleveland (USA), Jul 9-Scott Pruett (USA)-Chevrolet Camaro
8. Toronto (CDN), Jul 16-Tom Kendall (USA)-Ford Mustang
9. Trois-Rivieres (CDN), Aug 7-Tom Kendall (USA)-Ford Mustang
10. Watkins Glen (USA), Aug 13-Ron Fellows (CDN)-Ford Mustang
11. Road Atlanta (USA), Aug 28-Scott Pruett (USA)-Chevrolet Camaro
12. Road America (USA), Sep 10-Dorsey Schroeder (USA)-Ford Mustang
13. Dallas (USA), Sep 18-Ron Fellows (CDN)-Ford Mustang

1995 (Champion: Tom Kendall)
1. Phoenix (USA), May 6-Price Cobb (USA)-Chevrolet Camaro
2. Mosport (CDN), May 21-Dorsey Schroeder (USA)-Ford Mustang
3. Lime Rock (USA), May 29-Dorsey Schroeder (USA)-Ford Mustang
4. Detroit Belle Isle (USA), Jun 10-Ron Fellows (CDN)-Chevrolet Camaro
5. Portland (USA), Jun 18-Ron Fellows (CDN)-Chevrolet Camaro
6. Road America (USA), Jul 8-Boris Said (USA)-Ford Mustang
7. Cleveland (USA), Jul 22-Ron Fellows (CDN)-Chevrolet Camaro
8. Trois-Rivieres (CDN), Aug 6-Ron Fellows (CDN)-Chevrolet Camaro
9. Watkins Glen (USA), Aug 12-Ron Fellows (CDN)-Chevrolet Camaro
10. Road Atlanta (USA), Aug 27-Tom Kendall (USA)-Ford Mustang
11. Sears Point (USA), Oct 8-Dorsey Schroeder (USA)-Ford Mustang

1996 (Champion: Tom Kendall)
1. St Petersburg (USA), Feb 25-Ron Fellows (CDN)-Chevrolet Camaro
2. Homestead (USA), Mar 17-Tom Kendall (USA)-Ford Mustang
3. Long Beach (USA), Apr 14-Jamie Galles (USA)-Chevrolet Camaro
4. Phoenix (USA), Apr 20-Dorsey Schroeder (USA)-Ford Mustang
5. Mosport (CDN), May 19-Paul Gentilozzi (USA)-Chevrolet Camaro
6. Lime Rock (USA), May 27-Dorsey Schroeder (USA)-Ford Mustang
7. Detroit Belle Isle (USA), Jun 8-Dorsey Schroeder (USA)-Ford Mustang
8. Cleveland (USA), Jul 29-Tom Kendall (USA)-Ford Mustang
9. Minneapolis (USA), Jul 14-Tom Kendall (USA)-Ford Mustang
10. Trois-Rivieres (CDN), Aug 3-Ron Fellows (CDN)-Chevrolet Camaro
11. Watkins Glen (USA), Aug 10-Dorsey Schroeder (USA)-Ford Mustang
12. Road America (USA), Aug 17-Tom Kendall (USA)-Ford Mustang
13. Dallas (USA), Sep 1-Ron Fellows (CDN)-Chevrolet Camaro
14. Reno (USA), Sep 22-Ron Fellows (CDN)-Chevrolet Camaro

1997 (Champion: Tom Kendall)
1. St Petersburg (USA), Feb 23-Tom Kendall (USA)-Ford Mustang
2. Phoenix (USA), Apr 19-Tom Kendall (USA)-Ford Mustang
3. Lime Rock (USA), May 26-Tom Kendall (USA)-Ford Mustang
4. Detroit Belle Isle (USA), Jun 7-Tom Kendall (USA)-Ford Mustang
5. Mid-Ohio (USA), Jun 15-Tom Kendall (USA)-Ford Mustang
6. Minneapolis (USA), Jul 6-Tom Kendall (USA)-Ford Mustang
7. Cleveland (USA), Jul 12-Tom Kendall (USA)-Ford Mustang
8. Trois-Rivieres (CDN), Aug 3-Tom Kendall (USA)-Ford Mustang
9. Watkins Glen (USA), Aug 9-Tom Kendall (USA)-Ford Mustang
10. Road America (USA), Aug 16-Tom Kendall (USA)-Ford Mustang
11. Mosport (CDN), Aug 31-Tom Kendall (USA)-Ford Mustang
12. Pikes Peak (USA), Sep 27-Mike Borkowski (USA)-Ford Mustang
13. Reno (USA), Oct 19-Mike Borkowski (USA)-Ford Mustang

1998 (Champion: Paul Gentilozzi)
1. Long Beach (USA), Apr 5-Paul Gentilozzi (USA)-Chevrolet Corvette
2. Homestead (USA), May17-Paul Gentilozzi (USA)-Chevrolet Corvette
3. Lime Rock (USA), May 25-Lou Gigliotti (USA)-Ford Mustang
4. Detroit Belle Isle (USA), Jun 6-Paul Gentilozzi (USA)-Chevrolet Corvette
5. Mid-Ohio (USA), Jun 14-Paul Gentilozzi (USA)-Chevrolet Corvette
6. Minneapolis (USA), Jun 28-Paul Gentilozzi (USA)-Chevrolet Corvette
7. Cleveland (USA), Jul 11-Bill Saunders (USA)-Chevrolet Corvette
8. Grands Rapids (USA), Jul 26-Bill Saunders (USA)-Chevrolet Corvette
9. Trois-Rivieres (CDN), Aug 2-Paul Gentilozzi (USA)-Chevrolet Corvette
10. Watkins Glen (USA), Aug 8-Paul Gentilozzi (USA)-Chevrolet Corvette
11. Road America (USA), Aug 16-Stuart Hayner (USA)-Chevrolet Camaro
12. Pikes Peak (USA), Sep 27-Brian Simo (USA)-Ford Mustang
13. Houston (USA), Oct 3-Brian Simo (USA)-Ford Mustang

1999 (Champion: Paul Gentilozzi)
1. Long Beach (USA), Apr 5-Paul Gentilozzi (USA)-Ford Mustang
2. Mosport (CDN), May 21-Brian Simo (USA)-Ford Mustang
3. Lime Rock (USA), May 25-Brian Simo (USA)-Ford Mustang
4. Mid-Ohio (USA), Jun 14-Paul Gentilozzi (USA)-Ford Mustang
5. Road America (USA), Aug 16- Paul Gentilozzi (USA)-Ford Mustang
6. Road Atlanta (USA), Aug 27-Chris Neville (USA)-Ford Mustang
7. Trois-Rivieres (CDN), Aug 2-Paul Gentilozzi (USA)-Ford Mustang
8. Detroit Belle Isle (USA), Jun 6-Brian Simo (USA)-Ford Mustang
9. Grands Rapids (USA), Jul 26-Brian Simo (USA)-Ford Mustang
10. Vancouver (CDN), Sep 4-Brian Simo (USA)-Ford Mustang
11. Houston (USA), Oct 3-Paul Gentilozzi (USA)-Ford Mustang
12. Pikes Peak (USA), Sep 27-Brian Simo (USA)-Ford Mustang
13. Sebring (USA), Oct 17-Paul Gentilozzi (USA)-Ford Mustang

2000 (Champion: Brian Simo)
1. Sebring (USA), Mar 17-Brian Simo (USA)-Qvale Mangusta
2. Charlotte (USA), Apr 1-Brian Simo (USA)-Qvale Mangusta
3. Long Beach (USA), Apr 16-Tomy Drissi (USA)-Ford Mustang
4. Mosport (CDN), May 21-Brian Simo (USA)-Qvale Mangusta
5. Detroit Belle Isle (USA), Jun 17-Paul Gentilozzi (USA)-Jaguar XKR
6. Cleveland (USA), Jul 1-Paul Gentilozzi (USA)-Jaguar XKR
7. Road America (USA), Aug 19-Paul Gentilozzi (USA)-Jaguar XKR
8. Dallas (USA), Sep 3-Leighton Reese (USA)-Pontiac Grand Prix
9. Houston (USA), Sep 30-Chris Neville (USA)-Ford Mustang
10. Laguna Seca (USA), Oct 15-Kenny Wilden (CDN)-Chevrolet Camaro
11. Las Vegas (USA), Oct 29-Boris Said (USA)-Ford Mustang
12. San Diego (USA), Nov 5-Johnny Miller (USA)-Chevrolet Corvette

2001 (Champion: Paul Gentilozzi)
1. Sebring (USA), Mar 16-Boris Said (USA)-Ford Mustang
2. Long Beach (USA), Apr 8-Lou Gigliotti (USA)-Chevrolet Corvette
3. Mosport (CDN), May 20-Paul Gentilozzi (USA)-Jaguar XKR
4. Detroit Belle Isle (USA), Jun 16-Paul Gentilozzi (USA)-Jaguar XKR
5. Cleveland (USA), Jun 30-Paul Gentilozzi (USA)-Jaguar XKR
6. Sears Point (USA), Jun 22-Brian Simo (USA)-Qvale Mangusta
7. Portland (USA), Aug 4-Tommy Archer (USA)-Dodge Viper
8. Road America (USA), Aug 18-Mike Lewis (USA)-Jaguar XKR
9. Mid-Ohio (USA), Aug 25-Paul Gentilozzi (USA)-Jaguar XKR
10. Laguna Seca (USA), Sep 9-Justin Bell (GB)-Chevrolet Corvette
11. Houston (USA), Oct 6-Justin Bell (GB)-Chevrolet Corvette

2002 (Champion: Boris Said)
1. Long Beach (USA), Apr 14-Paul Gentilozzi (USA)-Jaguar XKR
2. Mosport (CDN), May 19-Boris Said (USA)-Panoz Esperante
3. Lime Rock (USA), May 27-Boris Said (USA)-Panoz Esperante
4. Mid-Ohio (USA), Jun 29-Butch Leitzinger (USA)-Chevrolet Corvette
5. Cleveland (USA), Jul 13-Boris Said (USA)-Panoz Esperante
6. Washington (USA), Jul 20-Butch Leitzinger (USA)-Chevrolet Corvette
7. Trois-Rivieres (CDN), Aug 4-Butch Leitzinger (USA)-Chevrolet Corvette
8. Road America (USA), Aug 17-Boris Said (USA)-Panoz Esperante
9. Denver (USA), Sep 1-Boris Said (USA)-Panoz Esperante
10. Bayfront Park (USA), Oct 5-Boris Said (USA)-Panoz Esperante
11. Road Atlanta (USA), Oct 11-Boris Said (USA)-Panoz Esperante
12. Danville (USA), Oct 27-Boris Said (USA)-Ford Mustang

2003 (Champion: Scott Pruett)
1. St Petersburg (USA), Feb 23-Scott Pruett (USA)-Jaguar XKR
2. Long Beach (USA), Apr 13-Boris Said (USA)-Ford Mustang
3. Mosport (CDN), May 18-Scott Pruett (USA)-Jaguar XKR
4. Lime Rock (USA), May 26-Johnny Miller (USA)-Jaguar XKR
5. Sears Point (USA), Jun 22-Scott Pruett (USA)-Jaguar XKR
6. Cleveland (USA), Jul 4-Scott Pruett (USA)-Jaguar XKR
7. Trois-Rivieres (CDN), Aug 2-Scott Pruett (USA)-Jaguar XKR
8. Road America (USA), Aug 24-Scott Pruett (USA)-Jaguar XKR
9. Denver (USA), Aug 31-Scott Pruett (USA)-Jaguar XKR
10. Bayfront Park (USA), Sep 28-Scott Pruett (USA)-Jaguar XKR
11. Isla Grande (PR), Oct 26-Wally Castro (PR)-Jaguar XKR

2004 (Champion: Paul Gentilozzi)
1. Long Beach (USA), Apr 18-Paul Gentilozzi (USA)-Jaguar XKR
2. Portland (USA), Jun 19-Paul Gentilozzi (USA)-Jaguar XKR
3. Sears Point (USA), Jun 27-Boris Said (USA)-Ford Mustang
4. Cleveland (USA), Jul 2-Paul Gentilozzi (USA)-Jaguar XKR
5. Toronto (CDN), Jul 11-Jorge Diaz (PR)-Jaguar XKR
6. Trois-Rivieres (CDN), Aug 1-Paul Gentilozzi (USA)-Jaguar XKR
7. Road America (USA), Aug 7-Tom Kendall (USA)-Jaguar XKR
8. Denver (USA), Aug 14-Paul Gentilozzi (USA)-Jaguar XKR
9. Laguna Seca (USA0, Sep 11-Tom Kendall (USA)-Jaguar XKR

2005 (Champion: Klaus Graf)
1. Long Beach (USA), Apr 10-Randy Ruhlman (USA)-Chevrolet Corvette C6.R
2. Portland (USA), Jun 18-Klaus Graf (D)-Jaguar XKR
3. Cleveland (USA), Jun 25-Randy Ruhlman (USA)-Chevrolet Corvette C6.R
4. Toronto (CDN), Jul 9-Paul Gentilozzi (USA)-Jaguar XKR
5. Edmonton (CDN), Jul 17-Greg Pickett (USA)-Jaguar XKR
6. San Jose (USA), Jul 30-Boris Said (USA)-Ford Mustang
7. Denver (USA), Aug 13-Klaus Graf (D)-Jaguar XKR
8. Road America (USA), Aug 21-Klaus Graf (D)-Jaguar XKR
9. Montreal (CDN), Aug 27-Klaus Graf (D)-Jaguar XKR

2006-2008 NO SERIES

2009 (Champion: Tomy Drissi)
1. Road Atlanta (USA), Mar 22-Greg Pickett (USA)-Jaguar XKR
2. Alton (USA), Apr 19-Klaus Graf (D)-Jaguar XKR
3. Mosport (CDN), May 17-Klaus Graf (D)-Jaguar XKR
4. Mid-Ohio (USA), May 31-Jorge Diaz (PR)-Jaguar XKR
5. Portland (USA), Jun 14-Tomy Drissi (USA)-Jaguar XKR
6. Watkins Glen (USA), Jul 12-Jim Goughary (USA)-Chevrolet Corvette
7. Road America (USA), Sep 20-Cliff Ebben (USA)-Ford Mustang

Total races: 450

Winning drivers

30 wins-Paul Gentilozzi
29 wins-Mark Donohue
28 wins-Tommy Kendall
22 wins-Scott Pruett
19 wins-Ron Fellows
17 wins-Greg Pickett, Willy T Ribbs, Dorsey Schroeder
15 wins-Scott Sharp
14 wins-Boris Said
12 wins-George Follmer, Peter Gregg, Brian Simo
11 wins-Darin Brassfield
9 wins-Wally Dallenbach Jr
8 wins-Elliot Forbes-Robinson, Irv Hoerr
7 wins-Hurley Haywood, Parnelli Jones, John Paul, Jerry Titus
6 wins-Klaus Graf, Pete Halsmer
5 wins-Jack Baldwin, Tom Gloy, John Greenwood, Jerry Hansen, Ludwig Heimrath, Monte Shelton, Bob Tullius
4 wins-John Bauer, David Hobbs, Hans Stuck
3 wins-Tommy Archer, Ronnie Bucknum, Bob Hagestad, Chris Kneifel, Butch Leitzinger, Milt Mintner
2 wins-Justin Bell, Mike Borkowski, Doc Bundy, Jorge Diaz, Tomy Drissi, Craig Fisher, Bob Johnson, Johnny Miller, Paul Miller, Chris Neville, Paul Newman, Walter Rohrl, Randy Ruhlman, Bill Saunders, Carl Schafer, Warren Tope, Eppie Wietzes, Tom Yeager
1 win-Tony Adamowicz, Warren Agor, Brad Brooker, Maurice Carter, Wally Castro, Price Cobb, Cliff Ebben, Vic Elford, Gene Felton, Jamie Galles, Robby Gordon, Jim Goughary, Larry Green, Dan Gurney, Stuart Hayner, Al Holbert, Max Jones, Horst Kwech, Robert Lappalainen, Mike Lewis, Bob Lobenberg, Klaus Ludwig, Walt Maas, John McComb, Allan Moffat, John Paul Jr, David Pearson, Mark Pielsticker, Sam Posey, Leighton Reese, Peter Revson, Jochen Rindt, George Robinson, Hal Shaw, Rob Spenard, Tuck Thomas, Kenny Wilden, Bob Wollek, Roy Woods

Total winning drivers: 96

Winning nationalities

Australia-1 driver (Kwech)
Austria-1 driver (Rindt)
Canada-5 drivers (Fellows, Heimrath, Moffat, Wietzes, Wilden)
Finland-1 driver (Lappalainen)
France-1 driver (Wollek)
Germany-4 drivers (Graf, Ludwig, Rohrl, Stuck)
Great Britain-3 drivers (Bell, Elford, Hobbs)
Puerto Rico-2 drivers (Castro, Diaz)
United States-72 drivers (Adamowicz, Agor, Archer, Baldwin, Bauer, Borkowski, Brassfield, Brooker, Bucknum, Bundy, Carter, Cobb, Dallenbach Jr, Donohue, Drissi, Ebben, Felton, Fisher, Follmer, Forbes-Robinson, Galles, Gentilozzi, Gloy, Gordon, Goughary, Green, Greenwood, Gregg, Gurney, Hagestad, Halsmer, Hansen, Hayner, Haywood, Hoerr, Holbert, Johnson, M Jones, P Jones, Kendall, Kneifel, Leitzinger, Lewis, Lobenberg, Maas, McComb, J Miller, P Miller, Mintner, Neville, Newman, Paul, Paul Jr, Pearson, Pickett, Pielsticker, Posey, Pruett, Reese, Revson, Ribbs, Robinson, Ruhlman, Said, Saunders, Schafer, Schroeder, Sharp, Shaw, Shelton, Simo, Spenard, Thomas, Tope, Titus, Tullius, Woods, Yeager)

Total winning nationalities: 9

Championships

4 titles-Paul Gentilozzi, Tom Kendall
3 titles-Mark Donohue, Scott Pruett
2 titles-Wally Dallenbach Jr, George Follmer, Peter Gregg, Scott Sharp
1 title-Gaston Andrey, Jack Baldwin, John Bauer, Tomy Drissi, Elliott Forbes-Robinson, Tom Gloy, Klaus Graf, John Greenwood, Hurley Haywood, Ludwig Heimrath, David Hobbs, Parnelli Jones, Horst Kwech, John Paul, Greg Pickett, Boris Said, Dorsey Schroeder, Brian Simo, Jerry Titus, Eppie Wietzes

Total champions: 28

Winning manufacturers

141 wins-Chevrolet
105 wins-Ford
46 wins-Mercury, Porsche
41 wins-Jaguar
16 wins-Oldsmobile
15 wins-AMC
9 wins-Pontiac
8 wins-Audi
7 wins-Panoz
5 wins-Dodge
4 wins-Qvale
2 wins-Buick, Datsun
1 win-Alfa Romeo, BMW, Nissan

Total wins: 450 by 17 manufacturers