| Fin | St | Driver | # | Owner | Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8 | Ted Field Danny Ongais Hurley Haywood | 0 | Ted Field | Porsche 935/79 930 990 0029 | 684 | running | ||
| 2 | 24 | John Morton Tony Adamowicz | 65 | Modena Sports Cars | Ferrari 365 GTB/4 16407 | 635 | running | ||
| 3 | 19 | Bruce Canepa Rick Mears Monte Shelton | 11 | Bruce Canepa | Porsche 935 009 00029 | 627 | running | ||
| 4 | 6 | Don Whittington Bill Whittington Jürgen Barth | 94 | Whittington Brothers | Porsche 935/79 930 990 0026 | 622 | running | ||
| 5 | 32 | Yoshimi Katayama 片山 義美 Yojiro Terada 寺田 陽次郎 Takashi Yorino | 7 | Mazda Technical Center | Mazda RX-7 | 617 | running | ||
| 6 | 34 | Walt Bohren Amos Johnson Roger Mandeville | 77 | Mazda Technical Center | Mazda RX-7 | 615 | running | ||
| 7 | 50 | Rusty Bond Ren Tilton | 60 | E. J. Pruitt & Sons | Porsche 911 | 612 | running | ||
| 8 | 33 | Tony Garcia Juan Montalvo Alberto Vadia | 54 | Montura Ranch Estates | Porsche Carrera RSR | 587 | running | ||
| 9 | 30 | Lance Van Every Ash Tisdelle Robert Overby | 98 | Van Every Racing | Porsche Carrera RSR | 579 | running | ||
| 10 | 40 | Angelo Pallavicini Enzo Calderari Marco Vanoli | 03 | Lubrifilm Racing | Porsche 934 930 670 0162 | 577 | running | ||
| 11 | 49 | Mike Ramirez Manuel Villa Luis Gordillo | 75 | Mike Ramirez | Porsche 911 | 560 | running | ||
| 12 | 27 | Honorato Espinosa Francisco Lopez Jorge Cortes | 37 | Botero Racing | Porsche Carrera | 551 | running | ||
| 13 | 55 | Peter Welter Richard Aten Jack Refenning | 33 | Peter Welter | Porsche 911 | 550 | running | ||
| 14 | 25 | Diego Febles Phil Currin | 58 | Diego Febles | Porsche Carrera | 543 | running | ||
| 15 | 12 | Charles Mendez Johnny Rutherford Paul Miller | 5 | Budweiser Racing | Porsche 935 930 770 0957 | 529 | suspension | ||
| 16 | 44 | Raymond Mummery Tom Sheehy Luis Sereix | 27 | Miami Auto Racing | Porsche 911S | 522 | differential | ||
| 17 | 39 | Bill Koll Jim Cook | 62 | Koll Motorsports | Porsche 914/6 | 511 | did not finish | ||
| 18 | 66 | Stephen Bond Philip Dann | 95 | Stephen E. Bond | Chevrolet Monza | 509 | running | ||
| 19 | 14 | John Wood Tom Bagley Carl Shafer | 21 | Gordon Oftedahl | Chevrolet Camaro | 493 | running | ||
| 20 | 45 | Tom Ashby Bill Bean Bob Beasley | 42 | Bullwinkele Racing Inc. | Porsche 911 | 493 | running | ||
| 21 | 67 | Terry Wolters Nort Northam Richard Weiss | 08 | Southern Racing Ent. | Porsche 911 911 030 1263 | 488 | running | ||
| 22 | 47 | George Drolsom Mark Greb John Maffucci | 34 | Drolsom Racing | Porsche 911 | 482 | running | ||
| 23 | 54 | C.C. Canada Russ Boykin Tom Ciccone | 64 | Lenton B. McGill | Chevrolet Camaro | 458 | running | ||
| 24 | 48 | Al Cosentino Dick Starita Taku Akaike | 61 | Faza Squadra | Mazda RX-3 | 444 | running | ||
| 25 | 53 | Anatoly Arutunoff José Marina Danny Sullivan | 8 | Automobiles International Inc. | Lancia Stratos | 439 | did not finish | ||
| 26 | 7 | Dick Barbour Brian Redman Paul Newman | 6 | Dick Barbour Racing | Porsche 935/77A 930 890 0024 | 410 | valve | ||
| 27 | 65 | Herb Adams Peter Frey Louis Spoerl | 80 | Herb Adams | Pontiac Firebird | 408 | oil pressure | ||
| 28 | 43 | Jim Mederer Don Sherman Jeff Kline | 17 | Racing Beat | Mazda RX-7 | 393 | did not finish | ||
| 29 | 35 | Dale Whittington R.D. Whittington Preston Henn | 93 | Whittington Brothers | Porsche 934 930 670 0173 | 389 | accident | ||
| 30 | 41 | Bill Scott Mark Hutchins Pierre Honegger | 71 | Bill Scott Racing | Porsche 911 | 388 | did not finish | ||
| 31 | 59 | Steve Southard William Koch Earl Roe | 40 | Performance Specialists | Porsche 914/6 | 385 | did not finish | ||
| 32 | 3 | Bob Wollek Jacky Ickx Peter Gregg | 1 | Gelo Racing Team | Porsche 935/77A 930 890 0015 | 342 | valves | ||
| 33 | 28 | Klaus Bytzek Rudy Bartling Ludwig Heimrath | 69 | Bytzek Automotive | Porsche Carrera RSR | 335 | oil system | ||
| 34 | 18 | Billy Hagan Hoyt Overbagh Ron Reed | 29 | Stratagraph Inc. | Rickets Monza 001/Chevrolet | 331 | did not finish | ||
| 35 | 46 | Joseph Hamilton Rob Hoskins Herb Forrest | 89 | Hamilton House Racing | Porsche 911 | 329 | did not finish | ||
| 36 | 37 | Robert Kirby John Hotchkis Howard Meister | 51 | Casablanca Fan Co. | Porsche Carrera RSR 911 360 0601 | 328 | did not finish | ||
| 37 | 36 | Alf Gebhardt Sepp Grinbold | 15 | Bavarian Motors International | BMW CSL | 299 | did not finish | ||
| 38 | 21 | Ernesto Soto Francisco Romero Oscar Notz | 81 | Performance Export | Porsche Carrera | 241 | did not finish | ||
| 39 | 38 | Dave White J. Kurt Roehrig John Hamilton | 01 | D. R. Racing | Porsche 911 | 223 | did not finish | ||
| 40 | 42 | Hal Shaw Jr. Tom Spalding Norm Ridgely | 13 | Hal Shaw Racing | Porsche 935 930 670 0180 | 222 | turbocharger | ||
| 41 | 52 | Ron Case Dave Panaccione | 36 | Case Racing | Porsche 911 | 210 | did not finish | ||
| 42 | 51 | Guy Thomas Milton Moise Tom Nehl | 53 | Guy Thomas | Chevrolet Camaro | 201 | running | ||
| 43 | 57 | Al Levenson Gary Baker Lanny Hester | 06 | Al Levenson | Chevrolet Corvette | 197 | did not finish | ||
| 44 | 10 | Charlie Kemp Carson Baird Kees Nierop | 23 | Charlie Kemp | Ford Mustang Cobra II | 168 | did not finish | ||
| 45 | 1 | Martino Finotto Carlo Facetti Gianpiero Moretti | 3 | Jolly Club - Sportwagen Racing | Porsche 935 930 770 0911 | 164 | engine | ||
| 46 | 4 | Reinhold Jöst Rolf Stommelen Volkert Merl | 4 | Reinhold Joest | Porsche 935J 930 890 0014 | 162 | engine | ||
| 47 | 56 | Rick Kump Bob Lee Sam Miller | 90 | Bob's Speed Products | AMC AMX | 156 | did not finish | ||
| 48 | 26 | Gerry Wellik Tom Bagley Joe Chamberlain John Wood | 12 | Gordon Oftedahl | Chevrolet Camaro | 147 | did not finish | ||
| 49 | 17 | Craig Carter Murray Edwards R.J. Valentine | 56 | Peerless Racing | Chevrolet Camaro | 144 | did not finish | ||
| 50 | 2 | Manfred Schurti John Fitzpatrick Bob Wollek | 2 | Gelo Racing Team | Porsche 935/77A 930 890 0020 | 135 | valves | ||
| 51 | 63 | John Tremblay Bob Lapp | 57 | John Tremblay | Datsun 240Z | 118 | gearbox | ||
| 52 | 9 | Bob Akin Rob McFarlin Roy Woods | 9 | Dick Barbour Racing | Porsche 935 930 770 0910 | 117 | engine | ||
| 53 | 15 | Jean-Claude Andruet Spartaco Dini Claude Ballot-Léna | 66 | Jean Marc Smadja | Ferrari 512 BB 26681 | 103 | withdrew | ||
| 54 | 13 | Claude Ballot-Léna Jean-Claude Andruet Michel Leclère | 67 | Jean Marc Smadja | Ferrari 512 BB 26685 | 101 | withdrew | ||
| 55 | 62 | Graham Shaw Don Yenko Jerry Thompson | 24 | Graham Shaw | Chevrolet Monza | 86 | did not finish | ||
| 56 | 20 | Bonky Fernandez Chiqui Soldevilla Tato Ferrer | 38 | Boricua Racing | Porsche Carrera RSR 911 460 9113 | 73 | did not finish | ||
| 57 | 16 | Bob Tullius Patrick Bedard Jean-Pierre Delaunay | 68 | N.A.R.T. | Ferrari 512 BB 26683 | 72 | accident | ||
| 58 | 31 | Bill McDill Steve Behr | 43 | Meldeau Tire Co. | Chevrolet Camaro | 59 | did not finish | ||
| 59 | 23 | Maurico DeNarvaez Albert Naon Pedro DeNarvaez | 46 | Mauricio De Narvaez | Porsche Carrera RSR 911 360 1099 | 46 | did not finish | ||
| 60 | 22 | Dave Cowart Dave McClain Kenper Miller | 07 | Budweiser Racing | Porsche Carrera | 35 | did not finish | ||
| 61 | 11 | Preston Henn Ted Field Danny Ongais | 00 | Ted Field | Porsche 935/77A 930 890 0021 | 29 | accident | ||
| 62 | 61 | Steve Griswold Steve Earle Rick Knoop | 14 | Bavarian Motors International | BMW CSL | 25 | cooling system | ||
| 63 | 60 | Gary Wonzer Robert Whitaker George Van Arsdale Richard Hughes | 96 | Gary Wonzer | Triumph GT-6 | 20 | electrical | ||
| 64 | 58 | Frank Leary Casey Mollett Steve Cook | 48 | Frank L. Leary III | Datsun 240Z | 13 | cooling system | ||
| 65 | 5 | John Paul Al Holbert Michael Keyser | 18 | John Paul | Porsche 935 930 890 0037 | 12 | electrical | ||
| 66 | 64 | Bob Bergstrom Brad Frisselle | 79 | Sports Ltd. Racing | Mazda RX-7 | 9 | suspension | ||
| 67 | 29 | Clark Howey Dale Koch Tracy Wolf | 73 | Howey Farms | Chevrolet Camaro | 4 | did not finish |