2004 American Le Mans Series
The 2004 American Le Mans Series season was the 34th season for the IMSA GT Championship, and the sixth under the American Le Mans Series banner. It was a series for Le Mans Prototypes and Grand Touring race cars divided into 4 classes: LMP1, LMP2, GTS, and GT. It began March 20, 2004 and ended October 16, 2004 after 9 races.
Schedule
Three circuits were added to the 2004 schedule, replacing three events which did not return from 2003. The sprint event at Road Atlanta along with Circuit Trois-Rivières and the Miami, Florida street circuit were removed, while Mid-Ohio Sports Car Course and Portland International Raceway both returned once again. These were joined by the addition of Lime Rock Park. The removal of Trois-Rivières rendered Mosport as the only race outside the United States.| Rnd | Race | Circuit | Date |
| 1 | Mobil 1 12 Hours of Sebring | Sebring Raceway | March 20 |
| 2 | American Le Mans at Mid-Ohio | Mid-Ohio | June 27 |
| 3 | New England Grand Prix | Lime Rock Park | July 5 |
| 4 | Infineon Grand Prix of Sonoma | Infineon Raceway | July 18 |
| 5 | Portland Grand Prix | Portland International Raceway | July 25 |
| 6 | Toronto Grand Prix of Mosport | Mosport | August 8 |
| 7 | Road America 500 | Road America | August 22 |
| 8 | Chevy presents Petit Le Mans | Road Atlanta | September 25 |
| 9 | Audi Sports Car Championships | Mazda Raceway Laguna Seca | October 16 |
Season results
Overall winner in bold.| Rnd | Circuit | LMP1 Winning Team | LMP2 Winning Team | GTS Winning Team | GT Winning Team | Results |
| Rnd | Circuit | LMP1 Winning Drivers | LMP2 Winning Drivers | GTS Winning Drivers | GT Winning Drivers | Results |
| 1 | Sebring |  #28 Audi Sport UK Veloqx |  #10 American Spirit Racing | #3 Corvette Racing | #23 Alex Job Racing | Results |
| 1 | Sebring | Allan McNish Frank Biela Pierre Kaffer | Ian James Mike Borkowski John Macaluso |  Ron Fellows Johnny O'Connell Max Papis | Timo Bernhard Sascha Maassen | Results |
| 2 | Mid-Ohio | #38 ADT Champion Racing | #30 Intersport Racing | #3 Corvette Racing | #45 Flying Lizard Motorsports | Results |
| 2 | Mid-Ohio | Marco Werner JJ Lehto | Clint Field Robin Liddell | Ron Fellows Johnny O'Connell | Darren Law Johannes van Overbeek | Results |
| 3 | Lime Rock | #38 ADT Champion Racing | #10 Miracle Motorsports | #4 Corvette Racing | #35 Risi Competizione | Results |
| 3 | Lime Rock | Marco Werner JJ Lehto | Ian James James Gue | Oliver Gavin Olivier Beretta | Ralf Kelleners Anthony Lazzaro | Results |
| 4 | Infineon | #38 ADT Champion Racing | #30 Intersport Racing | #3 Corvette Racing | #23 Alex Job Racing | Results |
| 4 | Infineon | Marco Werner JJ Lehto | Jon Field Clint Field Robin Liddell | Ron Fellows Johnny O'Connell | Timo Bernhard Jörg Bergmeister | Results |
| 5 | Portland | #38 ADT Champion Racing | #30 Intersport Racing | #3 Corvette Racing | #24 Alex Job Racing | Results |
| 5 | Portland | Marco Werner JJ Lehto | Jon Field Clint Field Robin Liddell | Ron Fellows Johnny O'Connell |  Romain Dumas Marc Lieb | Results |
| 6 | Mosport | #16 Dyson Racing | #30 Intersport Racing | #4 Corvette Racing | #23 Alex Job Racing | Results |
| 6 | Mosport | Butch Leitzinger James Weaver | Clint Field Robin Liddell | Oliver Gavin Olivier Beretta | Jörg Bergmeister Timo Bernhard | Results |
| 7 | Road America | #38 ADT Champion Racing | #10 Miracle Motorsports | #4 Corvette Racing | #23 Alex Job Racing | Results |
| 7 | Road America | Marco Werner JJ Lehto | Ian James James Gue | Oliver Gavin Olivier Beretta | Jörg Bergmeister Timo Bernhard | Results |
| 8 | Road Atlanta | #38 ADT Champion Racing | #30 Intersport Racing | #4 Corvette Racing | #23 Alex Job Racing | Results |
| 8 | Road Atlanta | Marco Werner JJ Lehto | Clint Field Robin Liddell Milka Duno | Oliver Gavin Olivier Beretta Jan Magnussen | Jörg Bergmeister Timo Bernhard Sascha Maassen | Results |
| 9 | Laguna Seca | #2 ADT Champion Racing | #30 Intersport Racing | #3 Corvette Racing | #24 Alex Job Racing | Results |
| 9 | Laguna Seca | Johnny Herbert Pierre Kaffer | Clint Field Rick Sutherland Robin Liddell | Ron Fellows Johnny O'Connell | Marc Lieb Romain Dumas | Results |
Teams Championship
Points are awarded to the top 10 finishers in the following order:- 20-16-13-10-8-6-4-3-2-1
- 23-19-16-13-11-9-7-6-5-4
- 26-22-19-16-14-12-10-9-8-7
LMP1 Standings
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
| 1 | ADT Champion Racing | Audi R8 | Audi 3.6L Turbo V8 | 22 | 20 | 20 | 20 | 20 | 16 | 20 | 26 | 19 | 183 |
| 2 | Dyson Racing | MG-Lola EX257 | MG XP20 2.0L Turbo I4 | 14 | 16 | 16 | 16 | 16 | 20 | 19 | 16 | 133 | |
| 3 | Audi Sport UK Team Veloqx | Audi R8 | Audi 3.6L Turbo V8 | 26 | 26 | ||||||||
| 4 | Intersport Racing | Riley & Scott Mk III C Lola B01/60 | Élan 6L8 6.0L V8 Judd KV675 3.4L V8 | 9 | 16 | 25 | |||||||
| 5 | Rollcentre Racing | Dallara SP1 | Judd GV4 4.0L V10 | 16 | 16 | ||||||||
| 6 | Autocon Motorsports | Riley & Scott Mk III C | Lincoln 5.0L V8 | 12 | 12 | ||||||||
| 7 | Larbre Compétition | Panoz GTP | Élan 6L8 6.0L V8 | 10 | 10 |
LMP2 Standings
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
| 1 | Miracle Motorsports | Lola B2K/40 Courage C65 | Nissan VQL 3.0L V6 MG XP20 2.0L Turbo I4 | 26 | 13 | 20 | 16 | 16 | 16 | 20 | 19 | 146 | |
| 2 | Intersport Racing | Lola B2K/40 | Judd KV675 3.4L V8 | 20 | 20 | 20 | 20 | 26 | 23 | 129 | |||
| 3 | Marshall Cooke Race Car Company | Lola B2K/40 | Ford 2.0L Turbo I4 | 16 | 16 | 22 | 54 | ||||||
| 4 | Rand Racing | Lola B2K/40 | Nissan VQL 3.0L V6 | 22 | 22 | ||||||||
| 5 | Team Bucknum | Pilbeam MP91 | Nissan VQL 3.0L V6 Willman 3.4L V6 | 13 | 13 |
GTS Standings
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
| 1 | Corvette Racing | Chevrolet Corvette C5-R | Chevrolet 7.0L V8 | 26 | 20 | 20 | 20 | 20 | 20 | 20 | 26 | 23 | 195 |
| 2 | ACEMCO Motorsports | Saleen S7-R | Ford 7.0L V8 | 19 | 13 | 13 | 13 | 13 | 13 | 16 | 16 | 116 | |
| 3 | Carsport America | Dodge Viper GTS-R | Dodge 8.0L V10 | 10 | 10 | 10 | 10 | 19 | 59 | ||||
| 4 | Krohn-Barbour Racing | Lamborghini Murciélago R-GT | Lamborghini 6.0L V12 | 10 | 16 | 10 | 14 | 50 | |||||
| 5 |  Barron Connor Racing | Ferrari 575-GTC Maranello | Ferrari 6.0L V12 | 22 | 22 |
GT Standings
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Rd 9 | Total |
| 1 | Alex Job Racing | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 26 | 16 | 13 | 20 | 20 | 20 | 20 | 26 | 23 | 184 |
| 2 | Flying Lizard Motorsports | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 16 | 20 | 16 | 16 | 16 | 13 | 13 | 14 | 16 | 140 |
| 3 | White Lightning Racing | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 19 | 13 | 8 | 1 | 13 | 16 | 16 | 19 | 9 | 114 |
| 4 | The Racer's Group | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 9 | 10 | 6 | 8 | 8 | 8 | 10 | 10 | 11 | 80 |
| 5 | Risi Competizione | Ferrari 360GTC Modena | Ferrari 3.6L V8 | 10 | 20 | 10 | 10 | 16 | 13 | 79 | |||
| 6 | J-3 Racing | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 12 | 10 | 6 | 4 | 4 | 8 | 9 | 5 | 58 | |
| 7 | British American Motorsports | Porsche 911 GT3-RSR | Porsche 3.6L Flat-6 | 14 | 3 | 2 | 4 | 12 | 6 | 41 | |||
| 8 | P.K. Sport | Porsche 911 GT3-RS | Porsche 3.6L Flat-6 | 6 | 3 | 4 | 3 | 1 | 17 | ||||
| 9 | Panoz Motor Sports | Panoz Esperante GT-LM | Ford 5.0L V8 | 2 | 3 | 7 | 12 | ||||||
| 10= | Morgan Works Race Team | Morgan Aero 8-R | BMW 4.5L V8 | 7 | 7 | ||||||||
| 10= | Cirtek Motorsport | Porsche 911 GT3-RSR Ferrari 360GTC Modena | Porsche 3.6L Flat-6 Ferrari 3.6L V8 | 7 | 7 |