IMSA GT Championship
GTP (Including World Sports Cars) Year Driver Nat Car 1971 Peter Gregg/ Hurley Haywood USA Porsche 914/6 1972 Harley Haywood USA Porsche 911S 1973 Peter Gregg USA Porsche Carrera 1974 Peter Gregg USA Porsche Carrera 1975 Peter Gregg USA Porsche Carrera 1976 Al Holbert USA Porsche Carrera/Chevrolet Monza GT 1977 Al Holbert USA Chevrolet Monza DT 1978 Peter Gregg USA Porsche 935 1979 Peter Gregg USA Porsche 935 1980 John Fitzpatrick GB Porsche 935 1981 Brian Redman GB Porsche 935/Lola T600-Chevrolet 1982 John Paul Jr USA Lola T600-Chevrolet/Porsche 935 1983 Al Holbert USA March 83G-Porsche/March 83GD-Chevrolet/Porsche 935 1984 Randy Lanier USA March 83G-Chevralet/March 84G-Chevrolet 198S Al Holbert USA Porsche 962 1986 Al Holbert USA Porsche 962 1987 Chip Robinson USA Porsche 962 1988 Geoff Brabbam AUS Nissan GTP ZX-T 1989 Geoff Brabbam AUS Nissan GTP ZX-T 1990 Geoff Brabham AUS Nissan GTP ZX-T/Nissan NPT-90 1991 Geoff Brabham AUS Nissan R9OC/Nissan NPT-90/Nissan NPT-91 1992 Juan Manuel Fangio II RA Eagle Mk3-Toyota 1993 Juan Manuel Fangio II RA Eagle Mk3-Toyota 1994 Wayne Taylor ZA Kudzu-Mazda
| 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 |
| 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 |
See the WSC Results section for the earlier races.
Year Driver Nat Car 1985 Jim Downing USA Argo JM16B-Mazda 1986 Jim Downing USA Argo JM19-Mazda 1987 Jim Downing USA Argo JM19B-Mazda 1988 Tom Hessert USA Tiga GT286-Buic/Tiga GT286-Chevrolet/Tiga GT288-Buick 1989 Scott Schubot USA Spice SE88P-Buick 1990 Tomas Lopez MEX Spice SE90P-Buick 1991 Parker Johnstone USA Spice SE9OP-Acura 1992 Parker Johnstone USA Spice SE91P-Acura 1993 Parker Johnstone USA Spice SE92P-Acura
Other IMSA Categories
GTO GTU GTS Year Driver Nat Driver Nat Driver Nat 1971 Dave Heinz USA - 1972 Phil Currin USA Hurley Haywood USA 1973 - Bob Bergstrom USA - 1974 - Walt Maas USA - 1975 - Bob Sharp USA - 1976 - Brad Frisselle USA - 1977 - Walt Maas USA - 1978 Dave Cowart USA Dave White USA - 1979 Howard Meister USA Dan Devendorf USA - 1980 Luis Mendez USA Walt Bohren USA - 1981 Dave Cowart USA Len Mueller USA - 1982 Don Devendorf USA Jim Downing USA - 1983 Wayne Baker USA Rog Mandeville USA - 1984 Rog Mandeville USA Jack Baldwin USA - 1985 John Jones CDN Jack Baldwin USA - 1986 Scott Pruett USA Tom Kendall USA - 1987 Chris Cord USA Tom Kendall USA - 1988 Scott Pruett USA Tom Kendall USA - 1989 Pete Halsmer USA Bob Leitzinger USA - 1990 D'ey Schroeder USA Lance Stewart USA - 1991 Pete Halsmer USA John Fergus USA - 1992 Irv Hoerr USA David Loring USA Steve Millen NZ 1993 Charles Morgan USA Butch L'zinger USA Tom Kendall USA 1994 Joe Pezza USA Jim Pace USA Steve Millen NZ Click on the year for detailed championship standings, and the name for race results
Indy Lights
Year Driver Nat Car 1986* Fabrizio Barbazza I Wildcat 86A-Buick 1987* Didier Theys B Wildcat 86A-Buick 1988* Jon Beekhuis USA Wildcat 86A-Buick 1989* Mike Groff USA Wildcat 86A-Buick 1990* Paul Tracy CDN Wildcat 86A-Buick 1991 Eric Bachelart B Wildcat 86A-Buick 1992 Robbie Buhl USA Wildcat 86A-Buick 1993 Bryan Herta USA Lola T93/20-Buick 1994 Steve Robertson GB Lola T93/20-Buick * known as American Racing Series
IMSA Barber-Saab Pro-Series
Year Driver Nat Car 1986 Willy Lewis USA Mondiale Barber-SAAB 1987 Ken Murillo USA Mondiale Barber-SAAB 1988 Bruce Feldman USA Mondiale Barber-SAAB 1989 Robbie Buhl USA Mondiale Barber-SAAB 1990 Rob Wilson NZ Mondiale Barber-SAAB 1991 Bryan Herta USA Mondiale Barber-SAAB 1992 Robert Amren S Mondiale Barber-SAAB 1993 Kenny Brack S Mondiale Barber-SAAB 1994 Diego Guzman CO Mondiale Barber-SAAB
International Race of Champions (IROC)
Year Driver Nat Car 1974 Mark Donohue USA Porsche Carrera 1975 Bobby Unser USA Chevrolet Camaro 1976 AJ Foyt Jr USA Chevrolet Camaro 1977 AJ Foyt Jr USA Chevrolet Camaro 1978 Al Unser USA Chevrolet Camaro 1979 Mario Andretti USA Chevrolet Camaro 1980 Bobby Allison USA Chevrolet Camaro 1984 Cale Yarborough USA Chevrolet Camaro 1985 Harry Gant USA Chevrolet Camaro 1986 Al Unser Jr USA Chevrolet Camaro 1987 Geoff Bodine USA Chevrolet Camaro 1988 Al Unser Jr USA Chevrolet Camaro 1989 Terry Labonte USA Chevrolet Camaro 1990 Dale Earnhardt USA Dodge Daytona 1991 Rusty Wallace USA Dodge Daytona 1992 Ricky Rudd USA Dodge Daytona 1993 Davey Allison* USA Dodge Daytona 1994 Mark Martin USA Dodge Avenger * Allison won the series posthumously, having been killed in a helicopter accident.
North American Formula 5000 Championship
Year Driver Nat Car 1967* Gus Hutchison USA Lotus 41-Chevrolet 1968* Lou Sell USA Eagle-Chevrolet 1969* Tony Adamowicz USA Eagle-Chevrolet 1970* John Cannon CDN McLaren M1OB-Chevrolet 1971* David Hobbs GB McLaren M1OB-Chevrolet 1972 Graham McRae NZ McRae GM1-Chevrolet 1973 Jody Scheckter ZA Trojan T1O1-Chevrolet/Lola T300-Chevrolet 1974 Brian Redman GB Lola T332-Chevrolet 1975 Brian Redman GB Lola T332 Chevrolet/Lola T400 Chevrolet 1976 Brian Redman GB Lola T332C Chevrolet * known as Formula A
North American Toyota Atlantic Championship
Year Division Driver Nat Car 1974 Bill Brack CDN Lotus 69-Ford 1975 Bill Brack CDN Chevron B29-Ford 1976 Gilles Villeneuve CDN March 76B-Ford 1977 Gilles Villeneuve CDN March 77B-Ford 1978 Howdy Holmes USA March 78B-Ford 1979 Tom Gloy USA Ralt RT1-Ford 1980 Jacques Villeneuve CDN March 80A-Ford 1981 Jacques Villeneuve CDN March 8lA-Ford 1982 Dave McMillen NZ Ralt RT4-Ford 1983 Michael Andretti USA Ralt RT4-Ford 1984 Dan Marvin USA Ralt RT4-Ford 1985 Eastern Michael Angus USA Ralt RT4-Ford Western Jeff Wood USA Ralt RT4-Ford 1986 Eastern Scott Goodyear CDN Ralt RT4-Ford Western Ted Prappas USA Ralt RT4-Ford 1987 Eastern Calvin Fish GB Ralt RT4-Ford Western Johnny O'Connell USA Ralt RT4-Ford 1988 Eastern Steve Shelton USA Swift DB4-Ford Western Dean Hall USA Swift DB4-Ford 1989 Eastern J.O. "Jocko" Cunningham USA Swift DB4-Ford Western Hiro Matsushita J Swift DB4-Ford/Swift DB4-Toyota 1990 Eastern Brian Till USA Swiff DB4-Toyota Western Mark Dismore USA Swiff DB4-Toyota 1991 Jovy Marcelo RP Swift DB4-Toyota 1992 Chris Smith USA Swift DB4-Toyota 1993 David Empringham CDN Ralt RT40-Toyota 1994 David Empringham CDN Ralt RT41-Toyota
SCCA Super Vee Championship
Year Driver Nat Car 1971 Bill Scott USA Royale-Volkswagen 1972 Bill Scott USA Royale-Volkswagen 1973 Bertil Roos S Tui BH3-Valkswagen 1974 Elliott Forbes-Robinson USA Lola T320-Volkswagen 1975 Eddie Miller USA Lola T324-Volkswagen 1976 Tom Bagley USA Zink Z11-Volkswagen 1977 Bob Lazier USA Lola T324-Volkswagen 197R Bill Alsup USA Argo JM2-Volkswagen 1979 Geoff Brabham AUS Ralt RT1-Volkswagen 1980 Peter Kuhn USA Ralt RT1-Volkswagen/Ralt RT5-Volkswagen 1981 Al Unser Jr USA Ralt RT5-Volksmagen 1982 Michael Andretti USA Ralt RT5-Volkswagen 1983 Ed Pimm USA Ralt RT5-Volkswagen/Anson SA4-Volkswagen 1984 Arie Luyendyk NL Ralt RT5-Volkswagen 1985 Ken Johnson USA Ralt RT5-Volkswagen 1986 Didier Theys B Martini MK47-Volkswagen/Martini MK5O-Volkswagen 1987 Scott Atchison USA Ralt RT5-Volkswagen 1988 Ken Murillo USA Ralt RT5-Voikswagen 1989 Mark Smith USA Ralt RT5-Volkswagen 1990 Stuart Crow USA Ralt RT5-Volkswagen
Trans-Am
Drivers - Championship - Manufacturers Year Class Driver Nat Car Constructor 1966 Horst Kwech/Gaston Andrey AUS/CH Alfa Romeo GTA Ford 1967 Jerry Titus USA Ford Mustang Ford 1968 Mark Donohue USA Chevrolet Camaro Chevrolet 1969 Mark Donohue USA Chevrolet Camaro Chevrolet 1970 Parnelli Jones USA Ford Mustang Ford 1971 Mark Donohue USA A.M.C. Javelin American Motors 1972 George Follmer USA A.M.C. Javelin American Motors 1973 Peter Gregg USA Porsche 911 Carrera RS Chevrolet 1974 Peter Gregg USA Porsche 911 Carrera RS Porsche 1975 John Greenwood USA Chevrolet Corvette Chevrolet 1976 Overall George Follmer USA Porsche 934 turbo Porsche Class 1 George Foilmer USA Porsche 934 turbo - Class 2 Jocko Maggiacomo USA A.M.C. Javelin - 1977 Class 1 Bob Tullius USA Jaguar XJS Porsche Class 2 Ludwig Heimrath CDN Porsche 934 Porsche 1978 Ciass 1 Bob Tullius USA Jaguar XJS Jaguar Ciass 2 Greg Pickett USA Chevrolet Corvette Chevrolet 1979 Class 1 Gene Bothello USA Chevrolet Corvette Chevrolet Class 2 John Paul USA Porsche 935 Porsche 1980 John Bauer USA Porsche 911SC Chevrolet 1981 Eppie Wietzes CDN Chevrolet Corvette Chevrolet 1982 Elliott Forbes-Robinson USA Pontiac Trans-Am Pontiac 1983 David Hobbs GB Chevrolet Camaro Chevrolet 1984 Tom Gloy USA Ford Capri RS Lincoln Mercury 1985 Wally Dallenbach Jr USA Ford Capri RS Lincoln Mercury 1986 Wally Dallenbach Jr USA Chevrolet Camaro Lincoln Mercury-Merkur 1987 Scott Pruett USA Mercury Merkur XR4Ti Lincoln Mercury-Merkur 1988 Hurley Haywood USA Audi Quattro 200 Audi 1989 Dorsey Schroeder USA Ford Mustang Ford 1990 Tom Kendall USA Chevrolet Beretta Chevrolet 1991 Scott Sharp USA Chevrolet Camaro Chevrolet 1992 Jack Baldwin USA Chevrolet Camaro Z28 Chevrolet 1993 Scott Sharp USA Chevrolet Camaro Z28 Chevrolet 1994 Scott Pruett USA Chevrolet Camaro Z28 Chevrolet