| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 14 | Al Holbert (USA)
Michael Keyser (USA) |
Porsche Carrera RSR 911 460 9056 | George Dickinson/Holbert Porsche-Audi | 230 | 12:00:02,023 | 1. | GTO | 3. | 2:54,292 |
| 2. | 11 | John Gunn (USA)
Carson Baird (USA) |
Porsche Carrera RSR 005 0009 | Dallas Heyser | 228 | 12:00:29,313 | 2. | GTO | 5. | 2:56,974 |
| 3. | 30 | Roberto Quintanilla (MEX)
Roberto Gonzalez (MEX) |
Porsche Carrera RSR 911 460 9113 | John McClelland | 227 | 3. | GTO | 14. | 3:02,026 | |
| 4. | 56 | Bob Hagestad (USA)
Jerry Jolly (USA) |
Porsche Carrera RSR 911 460 9057 | Hagestad Porsche | 224 | 4. | GTO | 10. | 2:59,688 | |
| 5. | 58 | Diego Febles (PR)
Hiram Cruz (USA) |
Porsche Carrera | Diego Febles Racing | 222 | 5. | GTO | 16. | 3:03,529 | |
| 6. | 44 | Mauricio DeNarvaez (CO)
Albert Naon (USA) John Freyre (USA) |
Porsche Carrera | Mauricio DeNarvaez | 221 | 6. | GTO | 18. | 3:05,235 | |
| 7. | 59 | Peter Gregg (USA)
Hurley Haywood (USA) |
BMW 3.0 CSL | BMW Motorsport North America | 217 | 7. | GTO | 2. | 2:50,601 | |
| 8. | 61 | Jim Busby (USA)
Carl Shafer (USA) |
Porsche Carrera RSR 911 560 9122 | Brumos Porsche-Audi | 210 | 8. | GTO | 6. | 2:57,696 | |
| 9. | 67 | Dave White (USA)
David McClain (USA) |
Porsche 911S | Havatampa Cigar | 209 | 1. | GTU | 20. | 3:08,329 | |
| 10. | 92 | Dieter Oest (USA)
Mike Tillson (USA) |
Porsche Carrera | Oest-Tilton Racing | 208 | 9. | GTO | 35. | 3:17,204 | |
| 11. | 91 | Juan Carlos Bolanos (MEX)
Billy Sprowls (USA) Eduardo Lopez Negrete (MEX) Gustavo Bolanos (MEX)* |
Porsche Carrera | Adams Apple | 206 | 10. | GTO | 17. | 3:03,676 | |
| 12. | 07 | Charles Mendez (USA)
Dave Cowart (USA) Dave Panaccione (USA)^ |
Porsche 911T | Charles Mendez Jr. | 206 | 2. | GTU | 34. | 3:16,771 | |
| 13. | 50 | Fritz Hochreuter (CDN)
Willy Goebbels (CDN) Hans Berner (CDN) |
Porsche 911S | Motex Auto | 200 | 3. | GTU | 43. | 3:21,783 | |
| 14. | 51 | Robert Kirby (USA)
John Hotchkis (USA) Len Jones (USA) |
Porsche 914/6 | Max Dial Porsche-Audi | 198 | 4. | GTU | 51. | 3:26,531 | |
| NRF | 77 | Bruce Jennings (USA)
Bob Beasley (USA) |
Porsche 911S | Bruce Jennings | 195 | Engine | 5. | GTU | 36. | 3:17,561 |
| 16. | 06 | Tim Chitwood (USA)
Vince Gimondo (USA) |
Chevrolet Camaro | Chitwood Racing | 191 | 11. | GTO | 15. | 3:03,240 | |
| 17. | 45 | Carlos Moran (ES)
Bob Fine (USA) "Jamsal" (ES) |
Porsche 911S | Carlos Moran | 185 | 6. | GTU | 45. | 3:23,195 | |
| 18. | 7 | Bob Gray (USA)
Terry Keller (USA) |
Chevrolet Corvette | Sebring Racing | 185 | 12. | GTO | 32. | 3:16,195 | |
| NRF | 72 | Bill Arnold (USA)
Carl Thompson (USA) |
Chevrolet Corvette | Bill Arnold | 182 | 13. | GTO | 38. | 3:17,668 | |
| 20. | 78 | Luis Sereix (USA)
Ignacio Gonzalez (PR) Gus Robayna (USA) |
Chevrolet Camaro | Ignacio Gonzalez | 178 | 14. | GTO | 50. | 3:25,720 | |
| 21. | 86 | Hugh Kleinpeter (USA)
Ron Goldleaf (USA) |
De Tomaso Pantera | Hugh I. Kleinpeter | 176 | 15. | GTO | 19. | 3:08,216 | |
| 22. | 87 | John Thomas (USA)
Jim Cook (USA) |
Porsche 914/6 | R. Mandella | 174 | 7. | GTU | 26. | 3:10,719 | |
| 23. | 52 | John Tunstall (USA)
Chuck Wade (USA) Joe Jenkins (USA)^ |
Porsche Carrera | Starbrite | 173 | 16. | GTO | 74. | no time | |
| 24. | 27 | Ray Mummery (USA)
Jack Refenning (USA) George Van Arsdale (USA) |
Porsche 911S | Jack Refenning | 170 | 8. | GTU | 46. | 3:24,217 | |
| 25. | 90 | Tom Reddy (USA)
Tom Davey (USA) Ray Walle (USA)* Bill Scott (USA)* |
Mazda Cosmo | Ray Walle Mazda | 168 | 9. | GTU | 67. | 3:59,446 | |
| 26. | 8 | Anatoly Arutunoff (USA)
José Marina (USA) Jack May (USA) |
Lotus Europa | Automobiles Int. | 162 | 10. | GTU | 71. | no time | |
| NC | 3 | Bart Hartman (USA)
Mark Domiteaux (USA) Donald Flores (USA) Tom Turner (USA) |
Austin Marina | 159 | 11. | GTU | 65. | 3:47,572 | ||
| NC | 38 | Paul Spruell (USA)
Walter Johnston (USA) Jan Petersen (USA) Roger Chastain (USA)* |
Alfa Romeo Alfetta | Paul Spruell | 158 | 12. | GTU | 69. | 4:12,424 | |
| NC | 15 | Javier Garcia (USA)
George Garcia (USA) Manuel Garcia (C)* |
Chevrolet Corvette Greenwood 006 | Garcia Bros. Racing | 157 | 17. | GTO | 4. | 2:55,653 | |
| NC | 5 | Raymond Gage (USA)
John Emig (USA) Pedro Velasquez, Jr. (USA) |
Porsche 911S | Richard C. Weiss | 150 | 13. | GTU | 41. | 3:20,995 | |
| DNF | 19 | Jerry Thompson (USA)
Richard Bostyan (USA) Don Yenko (USA) |
Chevrolet Corvette | Richard Bostyan | 144 | 18. | GTO | 7. | 2:57,941 | |
| NC | 54 | Hal Sahlman (USA)
Steve Southard (USA) Alex Job (USA) |
Porsche 914/6 | Spirit Racing | 141 | 14. | GTU | 77. | no time | |
| NC | 81 | Dave Smith (USA)
Don Herman (USA) |
Chevrolet Corvette | Dave Smith | 139 | 19. | GTO | 58. | 3:33,625 | |
| NC | 82 | Tom Ross (USA)
Jim Weber (USA) |
Ford Mustang | Tom Ross | 138 | 20. | GTO | 55. | 3:29,816 | |
| DNF | 99 | George Shafer (USA)
Al Crookston (USA) Dick Scott (USA) |
Datsun 240Z | George Shafer | 129 | Engine | 15. | GTU | 61. | 3:35,410 |
| DNF | 03 | Alf Gebhardt (USA)
Sepp Grinbold (USA) Bruno Beilcke (USA) |
BMW 2002 | Bavarian Motors International | 126 | Engine | 16. | GTU | 70. | 18:10,542 |
| NC | 41 | Herb Jones, Jr. (USA)
Steve Faul (USA) |
Chevrolet Camaro | Jones Industries Racing | 113 | 21. | GTO | 25. | 3:10,500 | |
| NC | 49 | Neil Potter (USA)
Bill Boyer (USA) |
Ford Mustang | Neil Potter | 112 | 22. | GTO | 59. | 3:33,839 | |
| DNF | 55 | Charles Kleinschmidt (USA)
Jack Andrus (USA) |
MGB GT | Charles Kleinschmidt | 110 | 17. | GTU | 68. | 4:09,540 | |
| DNF | 34 | George Drolsom (USA)
Bob Nagel (USA) |
Porsche 911S | George Drolsom | 106 | Gearbox | 18. | GTU | 72. | no time |
| DNF | 43 | John O'Steen (USA)
Dave Helmick (USA) John Graves (USA)* |
Porsche Carrera | Ecurie Escargot | 102 | Engine | 23. | GTO | 12. | 3:00,353 |
| DNF | 64 | Nick Craw (USA)
John Morton (USA) Joe Peacock (USA) Ray Korman (USA)* |
BMW 2002 | Miller & Norburn | 102 | Engine | 19. | GTU | 54. | 3:29,632 |
| NC | 31 | Juan Montalvo (C)
Jim Grob (USA) |
Ford Escort | Juan Montalvo | 102 | 20. | GTU | 28. | 3:11,703 | |
| DNF | 22 | Tony Lilly (USA)
Frank Marrs (USA) |
Lotus Europa | 97 | Engine | 21. | GTU | 37. | 3:17,618 | |
| DNF | 47 | Eddie Johnson (USA)
Clay Young (USA) Gene Felton (USA) |
Chevrolet Camaro | Clay Young | 96 | Ignition | 24. | GTO | 42. | 3:21,115 |
| DNF | 08 | Ron Oyler (USA)
Ken Braun (USA) Guy Church (USA) |
Renault R12 | Stiles Construction | 91 | 22. | GTU | 62. | 3:41,166 | |
| DNF | 24 | David Hobbs (GB)
Benny Parsons (USA) |
BMW 3.0 CSL | BMW Motorsport | 90 | 25. | GTO | 9. | 2:59,307 | |
| DNF | 68 | Mike Meldeau (USA)
Bill McDill (USA) |
Chevrolet Camaro | Mike Meldeau | 79 | 26. | GTO | 23. | 3:09,867 | |
| DNF | 21 | Richard Stone (USA)
Greg Gillingham (USA) Frank Fine (USA) |
Shelby GT350 | 78 | 27. | GTO | 30. | 3:14,325 | ||
| DNF | 42 | Bob Hindson (USA)
Frank Carney (USA) Dick Davenport (USA) |
Porsche 911S | Bob Hindson Racing | 77 | Accident | 23. | GTU | 31. | 3:15,295 |
| DNF | 96 | Mike Williamson (USA)
Lawrence P. Pleasants (USA) Charles Gano (USA) |
Chevrolet Camaro | Mike Williamson | 74 | 28. | GTO | 52. | 3:26,647 | |
| DNF | 97 | James Alspaugh (USA)
Bill McVey (USA) |
Chevrolet Corvette | 64 | Suspension | 29. | GTO | 56. | 3:29,940 | |
| DNF | 05 | Jim Trueman (USA)
Bobby Rahal (USA) |
Chevrolet Monza Trueman | Red Roof Inns | 63 | Suspension | 30. | GTO | 8. | 2:58,735 |
| DNF | 12 | Ford Smith (USA)
Bennett Aiken (USA) |
Chevrolet Camaro | Paul Bowden Racing | 62 | Engine | 31. | GTO | 39. | 3:17,756 |
| DNF | 60 | Rusty Bond (USA)
Ren Tilton (USA) |
Porsche 911S | Rusty Bond | 58 | Gearbox | 24. | GTU | 27. | 3:11,215 |
| DNF | 02 | Bill Scott (USA)
Milt Minter (USA) Charles Pete Conrad (USA)* |
VW Scirocco | Bill Scott | 54 | 25. | GTU | 57. | 3:31,818 | |
| DNF | 29 | Bud Wamsley (USA)
Guy Thomas (USA) Hoyt Overbagh (USA)* |
Chevrolet Corvette | Hoyt Overbagh | 51 | 32. | GTO | 49. | 3:25,075 | |
| DNF | 46 | Manuel Quintana (USA)
Luis Mendez (DR) Ahmed Valhuerdi (USA) |
Shelby GT350 | Ahmed Valhuerdi | 50 | 33. | GTO | 73. | no time | |
| DNF | 73 | David Crabtree (USA)
Clark Howey (USA) |
Chevrolet Corvette | Howey Farms | 47 | 34. | GTO | 75. | no time | |
| DNF | 39 | Wiley Doran (USA)
Gary Belcher (USA) |
Chevrolet Corvette | Wiley Doran | 46 | Engine | 35. | GTO | 22. | 3:09,121 |
| DNF | 04 | Dale Kreider (USA)
Stephen Bond (USA) |
Pontiac Astre | Bill Nelson, Sr. | 46 | 36. | GTO | 60. | 3:34,228 | |
| DNF | 18 | Terry Wolters (USA)
Wayne Miller (USA) Joe Castellano (USA) |
Chevrolet Camaro | Terry Wolters | 39 | 37. | GTO | 40. | 3:17,775 | |
| DNF | 66 | Stephen Behr (USA)
Janet Guthrie (USA) Tom Nehl (USA)* |
Chevrolet Monza King | Big Apple Racing | 38 | Gearbox | 38. | GTO | 11. | 3:00,220 |
| DNF | 76 | John Greenwood (USA)
Mike Brockman (USA) |
Chevrolet Corvette | Levitt Racing | 36 | Clutch | 39. | GTO | 1. | 2:47,937 |
| DNF | 26 | Mandy Gonzalez (PR)
Bonky Fernandez (PR) Mike Ramirez (PR) |
Lotus Elan | Bonky Fernandez | 28 | 26. | GTU | 29. | 3:12,246 | |
| DNF | 17 | Aubrey Bowles (USA)
Fred Rose (USA)^ |
Porsche 911S | Aubrey Bowles | 21 | 27. | GTU | 53. | 3:28,934 | |
| DNF | 40 | Bud Sherk (USA)
R. V. Shulnberg (USA) Emory Donaldson (USA)^ |
Chevrolet Corvette Greenwood 008 | R. V. Shulnberg | 11 | 40. | GTO | 24. | 3:10,350 | |
| DNF | 63 | Luis Mendez (DR)
Tony Canahuate (DR)^ Rene Rodriguez (USA)^ |
BMW 2002 | 11 | 28. | GTU | 63. | 3:43,945 | ||
| DNF | 36 | Tico Almeida (USA)
Pepe Romero (USA) |
Chevrolet Camaro | Motorcito Racing | 10 | Engine | 41. | GTO | 48. | 3:24,690 |
| DNF | 01 | William Frates (USA)
Craig Ross (USA)^ Spencer Buzbee (USA)^ |
Datsun 240Z | William Frates | 6 | Accident | 29. | GTU | 44. | 3:22,868 |
| DNF | 9 | Tony Ansley (USA)
Ron Connelly (USA)^ |
Chevrolet Corvette | Tony Ansley | 6 | Engine | 42. | GTO | 33. | 3:16,507 |
| DNF | 79 | Don Nooe (USA)
Richard Gahn (USA)^ |
Shelby GT350 | 2 | Engine | 43. | GTO | 76. | no time | |
| DNF | 71 | Ralph Noseda (USA)
Richard Small (USA)^ |
Chevrolet Camaro | Ralph Noseda | 1 | Engine | 44. | GTO | 21. | 3:08,519 |
| DNF | 33 | Dennis Stefl (USA)
John Carusso (USA)^ |
Chevrolet Corvette | John Carusso | 1 | Engine | 45. | GTO | 47. | 3:24,377 |
| DNF | 75 | Skip Grenier (USA)
Kevin Quigley (USA)^ Roger Ragland (USA)^ |
Mazda RX-2 | Skip Grenier | 0 | 30. | GTU | 64. | 3:46,433 | |
| DNS | 2 | Harry Theodoracopulos (USA)
Michel Jourdain (MEX) |
Chevrolet Corvette | Harry Theodoracopulos | Steering arm | GTO | 13. | 3:01,275 | ||
| DNS | 4 | Bob Bergstrom (USA)
Bill Shaw (USA) Martin Palmer (USA) |
Honda Civic | CACI | Accident in practice | GTU | 66. | 3:56,137 | ||
| DNS | 37 | Irwin Jann (USA)
Burt Greenwood (USA)* Rick Mancuso (USA)* |
Chevrolet Corvette Greenwood 007 | Rick Mancuso | Accident in practice | GTO | ||||
| DNS | 83 | Jim Logan (USA)
Bobbie Johnson (USA) |
BMW CSL | GTO | ||||||
| DNS | 93 | Larry Flynn (USA)
Larry Bock (USA) |
Chevrolet Camaro | J. E. Logan | GTO | |||||
| DNS | 95 | John Freyre (USA)
Don Yenko (USA) |
Chevrolet Camaro | GTO | ||||||
| DNA | 6 | C. C. Canada (USA)
Bob Christiansen (USA) |
Chevrolet Camaro | C. C. Canada | GTO | |||||
| DNA | 10 | Brian Goellnicht (USA)
Louis McAlpine (USA) |
Ferrari Dino 246 GT | GTU | ||||||
| DNA | 48 | Bob Bergstrom (USA)
Bill Shaw (USA) Martin Palmer (USA) |
Honda Civic | CACI | GTU | |||||
| DNA | 98 | Adrian Gang (USA)
Jim Cook (USA) Michael Callas (USA) |
Porsche 914/6 | Edelweiss Porsche | GTU |
| Winning Time: 12h00m02.023, 99.962 mph/160.390 kph |
| Fastest Lap: John Greenwood #76 (Chevrolet Corvette), 2m50.713, 109.658 mph/176.477 kph |
| * Driver entered for car, but never drove it at meeting |
| ^ Driver practiced car, but did not race it |
| RES - Reserve (Practiced, on standy-by for start) |
| REE - Reserve Entry |
| DNA - Did Not Arrive |
| DNS - Did Not Start |
| DNF - Did Not Finish |
| DNP - Did Not Practice |
| NC - Not Classified |
| DSQ - Disqualified |
| NRF - Not Running At Finish |
| NAC - Not Accepted |
| REJ - Rejected (Did not pass scrutineering) |