| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. | 9 | Bob Akin (USA)
Rob McFarlin (USA) Roy Woods (USA) |
Porsche 935 930 770 0910 | Dick Barbour Racing | 239 | 12:00:42,186 | 1. | GTX | 9. | 2:51,388 |
| 2. | 5 | Charles Mendez (USA)
Brian Redman (GB) Paul Miller (USA) |
Porsche 935 | Busch Beer Racing | 238 | 12:01:56,366 | 2. | GTX | 4. | 2:44,435 |
| 3. | 3 | Bob Garretson (USA)
Gary Belcher (USA) Bob Bondurant (USA) Skeeter McKitterick (USA)* |
Porsche 935 930 770 0959 | Dick Barbour Racing | 235 | 3. | GTX | 7. | 2:50,179 | |
| 4. | 6 | Rolf Stommelen (D)
Dick Barbour (USA) Rick Mears (USA) |
Porsche 935/77A 930 890 0024 | Dick Barbour Racing | 234 | 4. | GTX | 1. | 2:38,038 | |
| 5. | 38 | Bonky Fernandez (PR)
Tato Ferrer (PR) Chiqui Soldevilla (PR) |
Porsche Carrera RSR 911 460 9113 | Boricua Racing | 233 | 1. | GTO | 16. | 2:59,306 | |
| 6. | 13 | Hal Shaw, Jr. (USA)
Norm Ridgely (CDN) |
Porsche 935 930 670 0180 | Hal Shaw Racing | 231 | 5. | GTX | 14. | 2:57,342 | |
| 7. | 69 | Horst Kroll (CDN)
Rudy Bartling (CDN) Klaus Bytzek (CDN)* |
Porsche Carrera | Bytzek Automotive | 230 | 2. | GTO | 29. | 3:02,634 | |
| 8. | 54 | Tony Garcia (USA)
Juan Montalvo (C) Alberto Vadia (USA) |
Porsche Carrera | Montura Ranch Estates | 229 | 3. | GTO | 21. | 3:00,393 | |
| 9. | 98 | Lance Van Every (USA)
Ash Tisdelle (USA) |
Porsche Carrera RSR | Van Every Racing | 226 | 4. | GTO | 28. | 3:02,283 | |
| 10. | 37 | Honorato Espinosa (CO)
Francisco Lopez (CO) Jorge Cortes (CO) |
Porsche Carrera | Botero Racing Team | 219 | 5. | GTO | 24. | 3:01,847 | |
| 11. | 60 | Rusty Bond (USA)
Ren Tilton (USA) |
Porsche 911 | E. J. Pruitt & Sons | 219 | 1. | GTU | 44. | 3:10,538 | |
| 12. | 39 | Jim Trueman (USA)
John Higgins (USA) Chip Mead (USA) Turner Woddard (USA)* |
Porsche 911 | Barrick Motor Racing | 215 | 2. | GTU | 34. | 3:06,293 | |
| 13. | 77 | Roger Mandeville (USA)
Amos Johnson (USA) Jim Downing (USA) |
Mazda RX-7 | Roger T. Mandeville | 213 | 6. | GTX | 41. | 3:09,405 | |
| 14. | 07 | Dave Cowart (USA)
Kenper Miller (USA) David McClain (USA) |
Porsche Carrera | Morrison's | 205 | 6. | GTO | 22. | 3:00,963 | |
| 15. | 89 | Francisco Romero (YV)
Ernesto Soto (YV) |
Porsche Carrera | Hector Huerta | 201 | 7. | GTO | 15. | 2:58,344 | |
| 16. | 33 | Peter Welter (USA)
Richard Aten (USA) Jack Refenning (USA) |
Porsche 911 | Peter Welter | 198 | 3. | GTU | 49. | 3:13,781 | |
| 17. | 2 | Bonnie Henn (USA)
Lyn St. James (USA) Janet Guthrie (USA) Gary Belcher (USA)* Doc Bundy (USA)* |
Ferrari 365 GTB/4 13367 | Thunderbird Swap-Shop | 194 | 8. | GTO | 35. | 3:06,824 | |
| 18. | 70 | Walt Bohren (USA)
James Besmer (USA) |
Mazda RX-7 | Walt Bohren Racing | 193 | 7. | GTX | 38. | 3:08,610 | |
| 19. | 91 | Roger Schramm (USA)
Werner Frank (USA) |
Porsche Carrera RSR 911 460 0075? | Framm Promotions | 192 | 9. | GTO | 19. | 2:59,836 | |
| 20. | 51 | Robert Kirby (USA)
Wayne Baker (USA) Tom Winters (USA) |
Porsche 914/4 | Personalized Porsche | 188 | 4. | GTU | 61. | 3:19,375 | |
| 21. | 08 | Terry Wolters (USA)
Bob Buchler (USA) Nort Northam (USA) |
Porsche 911 911 030 1263 | Moran Construction | 182 | 5. | GTU | 58. | 3:17,269 | |
| 22. | 62 | Bill Koll (USA)
Jim Cook (USA) Dennis Aase (USA) |
Porsche 914/6 | Koll Motor Sports | 182 | 6. | GTU | 20. | 3:00,283 | |
| 23. | 93 | David Deacon (CDN)
Reagan Riley (CDN) Hank Franczak (CDN) |
Porsche 914/6 | M. Rochas Porsche | 179 | 7. | GTU | 60. | 3:17,716 | |
| NRF | 18 | John Paul (USA)
Al Holbert (USA) |
Porsche 935 JLP-1 JLP-1 | JLP Racing | 176 | Transmission | 8. | GTX | 3. | 2:40,190 |
| NC | 52 | Jack Swanson (USA)
Dick Gauthier (USA) |
Chevrolet Camaro | Ours & Hours Racing | 158 | 10. | GTO | 63. | 3:20,648 | |
| DNF | 09 | Hurley Haywood (USA)
Preston Henn (USA) Peter Gregg (USA) |
Porsche 935/77A 930 890 0021 or 0015 | Thunderbird Swap-Shop | 157 | Engine | 9. | GTX | 2. | 2:39,912 |
| DNF | 66 | Jeff Loving (USA)
Richard Small (USA) Ralph Noseda (USA) |
Chevrolet Camaro | Sunset Racing | 148 | 11. | GTO | 42. | 3:09,711 | |
| DNF | 46 | Mauricio DeNarvaez (CO)
Albert Naon (USA) |
Porsche Carrera | Mauricio deNarvaez | 147 | 12. | GTO | 12. | 2:55,942 | |
| NC | 01 | Dave White (USA)
Robert Overby (USA) |
Porsche 911 | Roehrig Racing | 147 | 8. | GTU | 31. | 3:04,552 | |
| DNF | 12 | Ford Smith (USA)
Jimmy Tumbleston (USA) Neil Potter (USA) |
Chevrolet Camaro | Ford Smith Racing | 139 | Engine | 13. | GTO | 76. | 3:44,363 |
| DNF | 71 | Bruce Jennings (USA)
Bob Beasley (USA) |
Porsche 911 | Bruce Jennings | 136 | 9. | GTU | 55. | 3:16,189 | |
| NC | 44 | George Van Arsdale (USA)
Kent Murry (USA) |
Porsche 911 | SUD Porsche Racing | 131 | 10. | GTU | 52. | 3:14,788 | |
| NC | 02 | J. Dana Roehrig (USA)
J. Kurt Roehrig (USA) |
Porsche 911 | Roehrig Racing | 128 | 11. | GTU | 70. | no time | |
| NC | 53 | Guy Thomas (USA)
Milton Moise (USA) Tom Nehl (USA) |
Chevrolet Camaro | Guy F. Thomas | 122 | 10. | GTX | 51. | 3:14,405 | |
| DNF | 00 | Ted Field (USA)
Danny Ongais (USA) |
Porsche 935/77A 930 890 0019 | Interscope Racing | 120 | Suspension | 11. | GTX | 5. | 2:45,929 |
| NC | 43 | Bill McDill (USA)
Tom Frank (USA) Mike Meldeau (USA)* |
Chevrolet Camaro | Meldeau Tire Stores | 118 | 12. | GTX | 25. | 3:01,937 | |
| DNF | 81 | Steve Faul (USA)
Herb Jones, Jr. (USA) Fred Lang (USA) |
Chevrolet Corvette | Jones Ind. Racing | 116 | 14. | GTO | 59. | 3:17,425 | |
| DNF | 29 | Billy Hagan (USA)
Hoyt Overbagh (USA) Ron Reed (USA) |
Chevrolet Monza | Stratagraph | 115 | 15. | GTO | 71. | no time | |
| DNF | 50 | Rainer Brezinka (CDN)
Gary Hirsch (CDN) Fritz Hochreuter (CDN) |
Porsche 911 | R & H Racing | 109 | 12. | GTU | 48. | 3:13,708 | |
| DNF | 75 | Mike Ramirez (PR)
Manuel Villa (PR) Luis Gordillo (PR) |
Porsche 911 | Mike Ramirez | 108 | Engine | 13. | GTU | 72. | no time |
| DNF | 36 | Ron Case (USA)
Dave Panaccione (USA) |
Porsche 911 | Case Racing | 106 | 14. | GTU | 46. | 3:13,129 | |
| DNF | 94 | Bill Whittington (USA)
Don Whittington (USA) |
Porsche 935/79 930 990 0026 | Whittington Bros. Racing | 104 | Accident | 13. | GTX | 6. | 2:46,236 |
| DNF | 72 | Bill Scott (USA)
Pierre Honegger (USA) |
Porsche 911 | Bill Scott Racing-Z&W | 99 | 15. | GTU | 37. | 3:07,297 | |
| DNF | 92 | Dale Whittington (USA)
R. D. Whittington (USA) Milt Minter (USA) |
Porsche 934 930 670 0173 | Whittington Bros. Racing | 94 | Suspension | 16. | GTO | 13. | 2:56,362 |
| DNF | 88 | Dave Yerger (USA)
Dario Orlando (USA) Del Russo Taylor (USA) |
Alfa Romeo GTV | Day Enterprise Racing | 90 | 16. | GTU | 67. | 3:25,549 | |
| DNF | 85 | John Hulen (USA)
Ron Coupland (USA) Bob Speakman (USA) |
Porsche 914/6 | John E. Hulen | 82 | 17. | GTU | 39. | 3:08,880 | |
| DNF | 56 | Craig Carter (USA)
Murray Edwards (CDN) Richard Valentine (USA) |
Chevrolet Camaro | Peerless Racing | 81 | Engine | 17. | GTO | 17. | 2:59,369 |
| DNF | 23 | Charlie Kemp (USA)
Kees Nierop (USA) Carson Baird (USA) |
Ford Cobra II | Kemp Motoracing | 80 | Engine | 14. | GTX | 30. | 3:03,590 |
| DNF | 27 | Ray Mummery (USA)
Tom Sheehy (USA) Luis Sereix (USA) |
Porsche 911S | Miami Auto Racing | 80 | 18. | GTU | 43. | 3:09,916 | |
| DNF | 97 | Ricardo Londono (CO)
George Garces John Gunn (USA) |
Porsche 935 | Ricardo Londono | 77 | 15. | GTX | 10. | 2:48,017 | |
| DNF | 8 | Anatoly Arutunoff (USA)
José Marina (USA) Danny Sullivan (USA) |
Lancia Stratos | Automobiles International | 75 | Engine | 19. | GTU | 57. | 3:16,721 |
| DNF | 34 | George Drolsom (USA)
Mark Greb (USA) John Maffucci (USA) |
Porsche 911 | Drolsom Racing | 75 | Transmission | 20. | GTU | 65. | 3:22,202 |
| DNF | 03 | Tico Almeida (USA)
Rene Rodriguez (USA) Pepe Romero (USA) Motor Hernandez (USA)* |
Chevrolet Corvette | Motorcito Racing | 73 | Engine | 18. | GTO | 53. | 3:14,959 |
| DNF | 31 | Hiram Cruz (USA)
Juan Lopez (DR) Mandy Gonzalez (PR) |
Porsche 911 | Hiram Cruz | 66 | 21. | GTU | 40. | 3:09,039 | |
| DNF | 58 | Diego Febles (PR)
Phil Currin (USA) |
Porsche Carrera | Diego Febles Racing | 65 | Transmission | 19. | GTO | 23. | 3:01,781 |
| DNF | 79 | Bob Bergstrom (USA)
Brad Frisselle (USA) |
Mazda RX-7 | Sports Ltd. Racing | 64 | 22. | GTU | 36. | 3:06,845 | |
| DNF | 04 | Rick Thompkins (USA)
Dave Heinz (USA) |
Chevrolet Corvette | Rick Thompkins | 61 | Engine | 20. | GTO | 75. | 3:32,034 |
| DNF | 95 | Stephen Bond (USA)
Philip Dann (USA) |
Chevrolet Monza | Ozone Industries | 49 | Transmission | 21. | GTO | 74. | no time |
| DNF | 22 | Peter Kirill (USA)
Gerry Wellik (USA) Carl Shafer (USA) |
Chevrolet Camaro | Oftedahl Racing | 37 | 22. | GTO | 64. | 3:21,880 | |
| DNF | 25 | Bob Zulkowski (USA)
Gerard Raney (USA) |
Porsche 914/6 | Metal Craft Racing | 34 | 23. | GTU | 47. | 3:13,368 | |
| DNF | 17 | Kenneth LaGrow (USA)
Bill Boyer (USA) |
Chevrolet Camaro | Kenneth D. LaGrow | 29 | Out of fuel | 16. | GTX | 56. | 3:16,291 |
| DNF | 16 | Darrel Overstreet (USA)
Dwight Mitchell (USA) |
Porsche 914/6 | Overstreet Racing Ent. | 25 | Engine | 24. | GTU | 32. | 3:05,487 |
| DNF | 28 | Clif Kearns (USA)
Gianpiero Moretti (I) |
Porsche 935 930 770 0960 | Desperado Racing | 23 | Out of fuel | 17. | GTX | 11. | 2:51,799 |
| DNF | 61 | Bill Bean (USA)
Al Cosentino (USA)^ Tom Ashby (USA)^ |
Mazda RX-3 | Bill Bean | 19 | 25. | GTU | 45. | 3:12,093 | |
| DNF | 7 | Ludwig Heimrath (CDN)
"Jamsal" (ES)^ Carlos Moran (ES)^ |
Porsche 935 930 770 0958 | Heimrath Racing | 17 | 18. | GTX | 8. | 2:50,509 | |
| DNF | 57 | John Tremblay (USA)
Bob Lapp (USA)^ |
Datsun 240Z | J. F. Tremblay | 12 | 26. | GTU | 62. | 3:20,448 | |
| DNF | 40 | Steve Southard (USA)
Earl Roe (USA)^ |
Porsche 914/6 | Performance Specialists | 11 | 27. | GTU | 54. | 3:15,848 | |
| DNF | 67 | Manuel Quintana (USA)
Joaquin Balaguer (DR)^ Jorge DeCardenas (USA)^ Pedro Vazquez (USA)^ |
Porsche 911 | Quintana Racing | 9 | 28. | GTU | 66. | 3:24,280 | |
| DNF | 48 | Sam Fillingham (USA)
Courtney Canfield (USA)^ Tim Chitwood (USA)^ |
Chevrolet Corvette | Fillingham Racing | 8 | Engine | 23. | GTO | 50. | 3:13,963 |
| DNF | 21 | Carl Shafer (USA)
John Wood (USA)^ |
Chevrolet Camaro | Oftedahl/Shafer Farms | 8 | Engine | 24. | GTO | 26. | 3:02,059 |
| DNF | 15 | Alf Gebhardt (USA)
Bruno Beilcke (USA)^ |
BMW CSL | Bavarian Motors | 4 | 25. | GTO | 27. | 3:02,080 | |
| DNF | 4 | Mark Leuzinger (USA)
Mike Van der Werff (USA)^ |
De Tomaso Pantera | B. R. Racing Team | 0 | Electrics | 26. | GTO | 73. | no time |
| DNS | 0 | Danny Ongais (USA)
Ted Field (USA) |
Porsche 935/79 930 990 0029 | Interscope Racing | Alternate car | GTX | 2:55,360 | |||
| DNS | 06 | Gary Wonzer (USA)
George Van Arsdale (USA) |
Triumph GT6 | Gary J. Wonzer | GTU | 4:05,417 | ||||
| DNS | 14 | Josele Garza (USA)
Bill McVey (USA) Glen Cross (USA) Robert Taylor (USA)* |
Porsche Carrera | Precision School of Racing | Withdrawn | GTO | 68. | 3:25,569 | ||
| DNS | 41 | Herb Jones, Jr. (USA)
Dean Hollis (USA) |
Chevrolet Camaro | Jones Ind. Racing | GTX | 18. | 2:59,435 | |||
| DNS | 47 | Tim Chitwood (USA)
Joie Chitwood (USA) |
Chevrolet Nova | Tim Chitwood | Withdrawn | GTO | 33. | 3:06,233 | ||
| DNS | 68 | Al Cosentino (USA)
Bill Bean (USA) Tom Ashby (USA) |
Mazda RX-3 | Alfred Cosentino | GTU | 4:21,268 | ||||
| DNS | 74 | Raul Garcia (USA)
Manuel Cueto (USA) |
Chevrolet Camaro | Raul Garcia | GTO | 3:38,006 | ||||
| DNS | 76 | Ken Williams (USA)
Wiley Doran (USA) Bill Johnson (USA)* |
Datsun 240Z | Associated Speed & Performance | Withdrawn | GTU | 3:38,566 | |||
| DNS | 78 | Ignacio Gonzalez (PR)
Eugenio Matienzo (USA) |
Chevrolet Camaro | Iggy Gonzalez | GTX | 3:06,845 | ||||
| DNS | 86 | Tom Ross (USA)
Paul Tavilla (USA) |
Ford Pinto | Team Ross Racing | GTX | 3:53,905 | ||||
| DNS | 87 | Mike Williamson (USA)
Wayne Miller (USA) Charles Gano (USA) Earle Moffitt (USA)* |
Chevrolet Corvette | U-Mo Racing | GTO | 69. | 3:24,105 | |||
| DNS | 90 | Bob Lee (USA)
Rick Kump (USA) Glenn Plushanski (USA)* |
AMC AMX | Bob's Speed Products | Withdrawn | GTO | 3:40,462 | |||
| DNA | 10 | Amos Johnson (USA)
Dennis Shaw (USA) |
AMC Spirit | Levi's Team Highball | GTX | |||||
| DNA | 24 | Graham Shaw (USA)
Don Yenko (USA) Jerry Thompson (USA) |
Chevrolet Monza | Graham Shaw | GTX | |||||
| DNA | 26 | Alejandro Cortes (USA)
Mike Powell (USA) |
Ford Mustang | Alejandro Cortes | GTO | |||||
| DNA | 83 | Joseph Hamilton (USA)
Rob Hoskins (USA) |
Porsche 911 | Hamilton House Racing | GTU |
| Winning Time: 12h00m42.186, 103.466 mph/166.512 kph |
| Fastest Lap: Rolf Stommelen #6 (Porsche 935), 2m39.145, 117.629 mph/189.305 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) |