| 1st | 2 | David Hobbs / Milt Minter / Tom Klausler | BMW 320i Turbo | McLaren North America | 2:35.7340 |
| 2nd | 6 | Dick Barbour / Rolf Stommelen / Manfred Schurti | Porsche 935/77A | Dick Barbour Performance | 2:37.6030 |
| 3rd | 95 | Bob Hagestad / Hurley Haywood | Porsche 935 | Bob Hagestad | 2:40.5980 |
| 4th | 59 | Peter Gregg | Porsche 935 | Brumos Porsche | 2:42.0100 |
| 5th | 9 | Brian Redman / Charles Mendez / Bob Garretson | Porsche 935 | Dick Barbour Performance | 2:45.2940 |
| 6th | 06 | R. V. Shulnburg / Dave Heinz / Michael Keyser | Chevrolet Corvette | R. V. Shulnburg Scrap Metal | 2:48.1030 |
| 7th | 28 | Clif Kearns / Marty Hinze / Stephen Behr | Porsche 935 | Desperado Racing | 2:50.7800 |
| 8th | 13 | Hal Shaw, Jr. / Tom Spalding | Porsche 935 | Ore House - Vail | 2:51.9920 |
| 9th | 04 | Rick Thompkins / Randy Blessing | Chevrolet Corvette | Rick Thompkins | 2:53.6290 |
| 10th | 33 | John Paul / Bonky Fernandez | Porsche Carrera RSR | JLP Racing | 2:55.9100 |
| 11th | 86 | Hugh Kleinpeter / Jef Stevens | De Tomaso Pantera GT4K | Team Pantera | 2:56.6400 |
| 12th | 48 | Luis Sereix / Lyn St. James / Phil Currin | Chevrolet Corvette | Autodyne | 2:57.5530 |
| 13th | 79 | Michael Callas / Peter Papke / Jim Cook | Porsche 911 Carrera RSR 3.0 | Rennsport Porsche Works | 2:57.7370 |
| 14th | 24 | Tom Frank / Bob Bergstrom | Porsche Carrera RSR | Executive Industries | 2:58.1020 |
| 15th | 58 | Diego Febles / Alec Poole | Porsche 911 Carrera RSR | Diego Febles Racing | 2:58.1130 |
| 16th | 32 | Steve Earle / Bob Akin / Rick Knoop | Porsche 911 Carrera RSR | Earle & Akin Racing | 2:58.4900 |
| 17th | 8 | Bob Beasley / Bruce Jennings | Porsche Carrera RSR | Robert Beasley | 2:58.4910 |
| 18th | 25 | Kenper Miller / Walt Bohren | BMW 3.5 CSL | KWM Racing | 2:58.7670 |
| 19th | 46 | Mauricio DeNarvaez / Albert Naon | Porsche 911 Carrera RSR | Mauricio De Narvaez | 2:59.7550 |
| 20th | 11 | Javier Garcia | Chevrolet Corvette C3 | Javier Garcia | 3:01.7260 |
| 21st | 96 | Gene Felton / Vince Gimondo | Buick Skylark | Unicure | 3:02.4060 |
| 22nd | 76 | Frank Thomas / Lee Mueller / Paul May | Porsche 911 | Quality Inn | 3:02.4630 |
| 23rd | 07 | Dave Cowart / Nick Craw / Joe Castellano | Porsche Carrera RSR | Morrison's Inc. | 3:03.0360 |
| 24th | 1 | Dale Kreider | Chevrolet Corvette | Dale Kreider Racing | 3:03.4950 |
| 25th | 77 | Francisco Romero / Ernesto Soto | Porsche 911 | Bill Scott Racing | 3:03.6570 |
| 26th | 20 | Richard Bostyan / Jerry Thompson / Don Yenko | Chevrolet Corvette | Bostyan Racing | 3:03.8090 |
| 27th | 41 | Herb Jones, Jr. / Steve Faul | Chevrolet Camaro | Jones Ind. Racing | 3:04.2940 |
| 28th | 38 | Mike Meldeau / Bill McDill | Chevrolet Camaro | Meldeau Tire Co. | 3:05.6060 |
| 29th | 23 | Hoyt Overbagh | Chevrolet Monza | Overbagh Motor Racing | 3:06.1250 |
| 30th | 01 | Dave White / J. Dana Roehrig / Gary Mesnick | Porsche 911 | Roehrig Racing Inc. | 3:06.7060 |
| 31st | 93 | Don Whittington / Russ Boy | Porsche 934/5 | Whittington Bros. | 3:06.7260 |
| 32nd | 84 | Bob Speakman / John Maffucci | Datsun 260Z | Worldparts | 3:06.9340 |
| 33rd | 51 | John Hotchkis / Robert Kirby / Dennis Aase | Porsche 911 | Wynn's International | 3:06.9810 |
| 34th | 92 | Dave Sloyer / Jim Fitzgerald | Plymouth Volare | Road Atlanta | 3:07.5540 |
| 35th | 71 | John Higgins / Tim Cooper / James King | Porsche 911 | Foreign Exchange Racing | 3:07.6920 |
| 36th | 91 | Werner Frank / Roger Schramm | Porsche Carrera RSR | Framm Promotions/W. Frank | 3:07.8030 |
| 37th | 73 | Clark Howey / Dale Koch | Chevrolet Camaro | Howey Farms | 3:08.3220 |
| 38th | 30 | Mandy Gonzalez / Hiram Cruz / Manuel Villa | BMW 3.0 CSL | Aro-Mandy Racing | 3:08.3710 |
| 39th | 89 | Rusty Bond / Ren Tilton | Porsche 911 | Barrick Motor Racing | 3:09.2230 |
| 40th | 85 | John Hulen / Ron Coupland / Nick Engels | Porsche 914/6 | John Hulen | 3:09.9460 |
| 41st | 81 | Juan Montalvo / Tony Garcia | Ford Escort | Juan Montalvo | 3:09.9990 |
| 42nd | 36 | Ron Case / Dave Panaccione / Jack Rynerson | Porsche 911 | Case Racing | 3:10.1880 |
| 43rd | 50 | Fritz Hochreuter / Rudy Bartling / Rainer Brezinka | Porsche 911 | Fritz Hochreuter | 3:10.3830 |
| 44th | 47 | Tim Chitwood / Sam Fillingham / K. P. Jones | Chevrolet Nova | Tim Chitwood | 3:11.0230 |
| 45th | 45 | Gary Steele / Jim Gaeta / Bob Zulkowski | Porsche 911 | Vann's Auto Body | 3:11.4510 |
| 46th | 03 | Cliff Gottlob / Danny Terrill | Chevrolet Corvette | Cliff Gottlob | 3:11.6610 |
| 47th | 88 | Joseph Hamilton / Chuck Wade / Ron Collins | Porsche 911 | Hamilton House Racing | 3:11.8700 |
| 48th | 19 | Anatoly Arutunoff | Lancia Stratos | Hallet Motor Racing Circuit | 3:12.0360 |
| 49th | 57 | Terry Keller / Bob Gray / Nort Northam | Chevrolet Corvette C3 | Sebring Racing | 3:12.0990 |
| 50th | 27 | Ray Mummery / Jack Refenning / Tom Sheehy | Porsche 911 S | Miami Auto Racing | 3:12.1340 |
| 51st | 14 | Robert LaMay / Richard Valentine / Larry Parker | Ford Mustang | Robert LaMay | 3:13.2470 |
| 52nd | 78 | Rod Bremner | Triumph TR7 | Abingdon/Ashley Motors | 3:13.5130 |
| 53rd | 62 | Bill Koll / David Hamren / Dennis Sherman | Porsche 914/6 | William J. Koll | 3:14.3740 |
| 54th | 80 | Herb Adams / Pat Bedard / Marv Thomson | Oldsmobile Cutlass | Herb Adams | 3:16.0500 |
| 55th | 61 | Al Cosentino / Jim Downing | Mazda RX-3 | Faza Squadra | 3:16.4530 |
| 56th | 70 | M. L. Speer / Windle Turley | Porsche 911 S | Race Car Ent. | 3:16.7210 |
| 57th | 35 | Bruno Beilcke / Sepp Grinbold / Alf Gebhardt | BMW 2002 | Team Beilcke | 3:17.7600 |
| 58th | 08 | Terry Wolters / Wayne Miller | Porsche 911 S | Terry Wolters | 3:20.0100 |
| 59th | 99 | Steve Cook / Bill Cooper / Ron Southern | Datsun 260Z | Bob Bondurant | 3:20.7740 |
| 60th | 49 | Ted Schumacher | Triumph GT6 | Ted Schumacher Racing | 3:21.1920 |
| 61st | 40 | Manuel Quintana | Ford Mustang | Quintana Racing | 3:22.6170 |
| 62nd | 54 | Joaquin Lopez | Chevrolet Camaro | Raul Garcia | 3:22.8960 |
| 63rd | 00 | Steve Southard / Jim Trueman | Porsche 914 | Red Roof Inns | 3:23.1820 |
| 64th | 4 | Mark Leuzinger / Mike Van der Werff | De Tomaso Pantera | B. R. Racing Team | 3:24.9460 |
| 65th | 05 | Stephen Bond / Philip Dann | Chevrolet Monza | Saltwater Band | 3:25.3870 |
| 66th | 21 | Vince DiLella / Manuel Cueto | Porsche 914/4 | DiLella Racing | 3:25.3940 |
| 67th | 34 | George Drolsom / Hugh Davenport | Porsche 911 S | Drolsom Racing Inc. | 3:26.5750 |
| 68th | 87 | Pedro Vazquez / Ron Oyler | Porsche 911 | Pedro Vazquez | 3:27.5290 |
| 69th | 52 | Charles Kleinschmidt / Lee Culpepper / William Koch | MGB GT | Native Tan | 3:27.7020 |
| 70th | 02 | H. David Redszus / Merv Rosen | BMW 2002 | H. David Redszus | 3:28.4570 |
| 71st | 7 | Ludwig Heimrath | Porsche 935 | Heimrath Racing | no time |
| 72nd | 3 | Bill Freeman / Bob Harmon / Byron Leydecker | Porsche Carrera RSR | Bill Freeman Racing | no time |
| 73rd | 42 | Chiqui Soldevilla / Luis Gordillo | Porsche 911 S | El Sol Racing | no time |
| 74th | 09 | Gary Belcher / Doc Bundy | Porsche 934/5 | Belcher Racing | no time |
| 75th | 17 | Kenneth LaGrow / Jimmy Tumbleston | Chevrolet Camaro | Kenneth LaGrow | no time |
| 76th | 0 | Gene Rutherford / Tom Wallace / Kathy Wallace | Oldsmobile Cutlass | Chesrown Olds | no time |
| 77th | 12 | George Garcia / Daniel Vilarchao | Chevrolet Corvette | George Garcia | no time |