| Pos. | Klasse | No. | Team | Coureurs | Chassis | Ronden |
| 1 | GTX | 0 |  Interscope Racing | Ted Field
Danny Ongais
Hurley Haywood | Porsche 935/79 | 684 |
| 2 | GTO | 65 | Modena Sports Cars | John Morton
Tony Adamowicz | Ferrari 365 GTB/4 Competizione | 635 |
| 3 | GTX | 11 | Bruce Canepa | Bruce Canepa
Rick Mears
Monte Shelton | Porsche 935 | 627 |
| 4 | GTX | 94 | Whittington Bros. Racing | Don Whittington
Bill Whittington
 Jürgen Barth | Porsche 935/79 | 622 |
| 5 | GTU | 7 | Mazda Technical Center |  Yoshimi Katayama
Yojiro Terada
Takashi Yorino | Mazda RX-7 | 617 |
| 6 | GTU | 77 | Mazda Technical Center | Walt Bohren
Amos Johnson
Roger Mandeville | Mazda RX-7 | 615 |
| 7 | GTU | 60 | E. J. Pruitt & Sons | Rusty Bond
Ren Tilton | Porsche 911 S | 612 |
| 8 | GTO | 54 | Montura Ranch Estates | Tony Garcia
 Juan Montalvo
Alberto Vadia | Porsche 911 Carrera RSR | 587 |
| 9 | GTO | 98 | Van Every Racing | Lance van Every
Ash Tisdelle
Robert Overby | Porsche 911 Carrera RSR | 579 |
| 10 | GTO | 03 |  Lubrifilm Racing | Angelo Pallavicini
Enzo Calderari
Marco Vanoli | Porsche 934 | 577 |
| 11 | GTU | 75 |  Mike Ramirez | Mike Ramirez
Manuel Villa
Luis Gordillo | Porsche 911 | 560 |
| 12 | GTO | 37 |  Botero Racing | Honorato Espinosa
Francisco López
Jorge Cortes | Porsche 911 Carrera RS | 551 |
| 13 | GTU | 33 | Peter Welter | Peter Welter
Richard Aten
Jack Refenning | Porsche 911 | 550 |
| 14 | GTO | 58 | Diego Febles Racing | Diego Febles
Phil Currin | Porsche 911 Carrera RS | 543 |
| DNF | GTX | 5 | Budweiser Racing | Charles Mendez
Johnny Rutherford
Paul Miller | Porsche 935 | 529 |
| DNF | GTU | 27 | Miami Auto Racing | Ray Mummery
Tom Sheehy
Luis Sereix | Porsche 911 S | 522 |
| DNF | GTU | 62 | Koll Motorsports | Bill Koll
Jim Cook | Porsche 914/6 | 511 |
| 18 | GTO | 95 | Stephen E. Bond | Stephen Bond
Philip Dann | Chevrolet Monza | 509 |
| 19 | GTO | 21 | Oftedahl Racing | John Wood
Tom Bagley
Carl Shafer | Chevrolet Camaro | 493 |
| 20 | GTU | 42 | Bullwinkele Racing, Inc. | Tom Ashby
Bill Bean
Bob Beasley | Porsche 911 | 493 |
| 21 | GTU | 08 | Southern Racing Ent. | Terry Wolters
Nort Northam
Richard Weiss | Porsche 911 S | 488 |
| 22 | GTU | 34 | Drolsom Racing | George Drolsom
Mark Greb
John Maffucci | Porsche 911 | 482 |
| 23 | GTO | 64 | Lenton B. McGill | C. C. Canada
Russ Boykin
Tom Ciccone | Chevrolet Camaro | 458 |
| 24 | GTU | 61 | Faza Squadra | Al Cosentino
Dick Starita
Taku Akaike | Mazda RX-3 | 444 |
| DNF | GTU | 8 | Automobiles International Inc. | Anatoly Arutunoff
José Marina
Danny Sullivan | Lancia Stratos HF | 439 |
| DNF | GTX | 6 | Dick Barbour Racing | Dick Barbour
 Brian Redman
Paul Newman | Porsche 935/77A | 410 |
| DNF | GTO | 80 | Herb Adams | Herb Adams
Peter Frey
Louis Spoerl | Pontiac Firebird | 408 |
| DNF | GTU | 17 | Racing Beat | Jim Mederer
Don Sherman
Jeff Kline | Mazda RX-7 | 393 |
| DNF | GTO | 93 | Whittington Bros. Racing | Dale Whittington
Don Whittington
Preston Henn | Porsche 934 | 389 |
| DNF | GTU | 71 | Bill Scott Racing | Bill Scott
Mark Hutchins
Pierre Honegger | Porsche 911 | 388 |
| DNF | GTU | 40 | Performance Specialists | Steve Southard
William Koch
Earl Roe | Porsche 914/6 | 385 |
| DNF | GTX | 1 | Gelo Racing Team |  Bob Wollek
 Jacky Ickx
Peter Gregg | Porsche 935/77A | 342 |
| DNF | GTO | 69 |  Bytzek Automotive | Klaus Bytzek
Rudy Bartling
Ludwig Heimrath | Porsche 911 Carrera RSR | 335 |
| DNF | GTO | 29 | Stratagraph Inc. | Billy Hagan
Hoyt Overbagh
Ron Reed | Chevrolet Monza | 331 |
| DNF | GTU | 89 | Hamilton House Racing | Joseph Hamilton
Rob Hoskins
Herb Forrest | Porsche 911 S | 329 |
| DNF | GTO | 51 | Casablanca Fan Co. | Robert Kirby
John Hotchkis
Howard Meister | Porsche 911 Carrera RSR | 328 |
| DNF | GTO | 15 | Bavarian Motors International | Alf Gebhardt
Sepp Grinbold | BMW 3.5 CSL | 299 |
| DNF | GTO | 81 |  Performance Export | Ernesto Soto
Francisco Romero
Oscar Notz | Porsche 911 Carrera RSR | 241 |
| DNF | GTU | 01 | D. R. Racing | Dave White
J. Kurt Roehrig
John Hamilton | Porsche 911 | 223 |
| DNF | GTX | 13 | Hal Shaw Racing | Hal Shaw
Tom Spalding
Norm Ridgely | Porsche 935 | 222 |
| DNF | GTU | 36 | Case Racing | Ron Case
Dave Panaccione | Porsche 911 | 210 |
| 42 | GTX | 53 | Guy Thomas | Guy Thomas
Milton Moise
Tom Nehl | Chevrolet Camaro | 201 |
| DNF | GTO | 06 | Al Levenson | Al Levenson
Gary Baker
Lanny Hester | Chevrolet Corvette | 197 |
| DNF | GTX | 23 | Charlie Kemp | Charlie Kemp
Carson Baird
Kees Nierop | Ford Mustang II Cobra | 168 |
| DNF | GTX | 3 |  Jolly Club – Sportwagen Racing Team | Martino Finotto
Carlo Facetti
Gianpiero Moretti | Porsche 935 | 164 |
| DNF | GTX | 4 | LM Joest Porsche | Reinhold Joest
Rolf Stommelen
Volkert Merl | Porsche 935/77A | 162 |
| DNF | GTO | 90 | Bob's Speed Products | Rick Kump
Bob Lee
Sam Miller | AMC AMX | 156 |
| DNF | GTO | 12 | Oftedahl Racing | Gerry Wellik
Tom Bagley
Joe Chamberlain | Chevrolet Camaro | 147 |
| DNF | GTO | 56 | Peerless Racing | Craig Carter
Murray Edwards
Richard Valentine | Chevrolet Camaro | 144 |
| DNF | GTX | 2 | Gelo Racing Team |  Manfred Schurti
John Fitzpatrick
Bob Wollek | Porsche 935/77A | 135 |
| DNF | GTU | 57 | John Tremblay | John Tremblay
Bob Lapp | Datsun 240Z | 118 |
| DNF | GTX | 9 | Dick Barbour Racing | Bob Akin
Rob McFarlin
Roy Woods | Porsche 935 | 117 |
| DNF | GTX | 66 | JMS Racing-Pozzi | Jean-Claude Andruet
Spartaco Dini
Claude Ballot-Léna | Ferrari 512 BB/LM | 103 |
| DNF | GTX | 67 | JMS Racing-Pozzi | Claude Ballot-Léna
Michel Leclère
Jean-Claude Andruet | Ferrari 512 BB/LM | 101 |
| DNF | GTX | 24 | Graham Shaw | Graham Shaw
Don Yenko
Jerry Thompson | Chevrolet Monza | 86 |
| DNF | GTO | 38 | Boricua Racing | Bonky Fernandez
Chiqui Soldevilla
Tato Ferrer | Porsche 911 Carrera RSR | 73 |
| DNF | GTX | 68 | N.A.R.T. | Bob Tullius
Jean-Pierre Delaunay
Pat Bedard | Ferrari 512 BB/LM | 72 |
| DNF | GTX | 43 | Meldeau Tire Co. | Bill McDill
Stephen Behr | Chevrolet Camaro | 59 |
| DNF | GTO | 46 | Mauricio de Narváez | Mauricio de Narváez
Albert Naon
Pedro de Narváez | Porsche 911 Carrera RSR | 46 |
| DNF | GTO | 07 | Budweiser Racing | Dave Cowart
David McClain
Kenper Miller | Porsche 911 Carrera RSR | 35 |
| DNF | GTX | 00 | Interscope Racing | Preston Henn
Ted Field
Danny Ongais | Porsche 935/77A | 29 |
| DNF | GTX | 14 | Bavarian Motors International | Steve Griswold
Steve Earle
Rick Knoop | BMW 3.0 CSL | 25 |
| DNF | GTU | 96 | Gary Wonzer | Gary Wonzer
Robert Whitaker
George Van Arsdale | Triumph GT6 | 20 |
| DNF | GTU | 48 | Frank L. Leary, III | Frank Leary
Casey Mollett
Steve Cook | Datsun 240Z | 13 |
| DNF | GTX | 18 | JLP Racing | John Paul sr.
Al Holbert
Michael Keyser | Porsche 935 JLP-1 | 12 |
| DNF | GTU | 79 | Sports Ltd. Racing | Bob Bergstrom
Brad Frisselle | Mazda RX-7 | 9 |
| DNF | GTX | 73 | Howey Farms | Clark Howey
Dale Koch
Tracy Wolf | Chevrolet Camaro | 4 |
| DNS | GTU | 63 | Faza Squadra | Al Cosentino
Craig Fisher | Mazda RX-3 | 0 |
| DNS | GTU | 78 | Associated Speed & Performance | Ken Williams
Wiley Doran
Neil Upchurch | Datsun 240Z | 0 |
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