| 1st | 1 | John Fitzpatrick / Jim Busby | Porsche 935 K3/80 | John Fitzpatrick Racing | 2:28.6750 |
| 2nd | 3 | Howard Meister / Rolf Stommelen / Harald Grohs | Porsche 935 M16 | Andial/Meister Racing | 2:29.8820 |
| 3rd | 86 | Hurley Haywood / Al Holbert / Bruce Leven | Porsche 935/80 | Bayside Disposal Racing | 2:30.8130 |
| 4th | 9 | Bob Garretson / Bobby Rahal / Brian Redman | Porsche 935 K3/80 | Cooke Woods Racing/Garretson Enterprises | 2:34.3650 |
| 5th | 30 | Gianpiero Moretti / Charles Mendez / Mauricio DeNarvaez | Porsche 935J | Momo/Penthouse | 2:34.6740 |
| 6th | 8 | John Paul / John Paul, Jr. | Porsche 935 JLP-3 | JLP Racing | 2:35.6580 |
| 7th | 0 | Ted Field / Danny Ongais | Porsche 935 K3/80 | Interscope Racing | 2:35.8140 |
| 8th | 5 | Bob Akin / Derek Bell / Craig Siebert | Porsche 935 K3 | Bob Akin Motor Racing | 2:35.8340 |
| 9th | 94 | Don Whittington / Bill Whittington / Dale Whittington | Porsche 935 K3 | Whittington Bros | 2:36.8070 |
| 10th | 90 | Roy Woods / Ralph Kent-Cooke / Skeeter McKitterick | Porsche 935 K3 | Cooke Woods Racing/Garretson Enterprises | 2:36.8480 |
| 11th | 07 | Ludwig Heimrath / Ludwig Heimrath, Jr. | Porsche 935 | Heimrath Porsche | 2:38.7220 |
| 12th | 2 | Marty Hinze / Milt Minter / Bill Whittington | Porsche 935 K3 | Marty Hinze Racing | 2:39.8910 |
| 13th | 20 | Chris Cord / Jim Adams | Chevrolet Monza | Chris Cord Racing | 2:42.7790 |
| 14th | 14 | Alf Gebhardt / Marc Surer | BMW M1 | BMW Challenge Team | 2:43.8090 |
| 15th | 25 | Dave Cowart / Kenper Miller | BMW M1 | Red Lobster Racing | 2:44.5660 |
| 16th | 35 | Mandy Gonzalez / Bonky Fernandez / Juan Cochesa | Porsche 934 | H.S.M. Racing | 2:48.3900 |
| 17th | 40 | David Deacon / Mike Freberg / Rudy Bartling | BMW M1 | David Deacon Racing | 2:48.7300 |
| 18th | 09 | Preston Henn / John Gunn / Gary Belcher | Porsche 935 K3 | T-Bird Swap Shop | 2:50.2000 |
| 19th | 58 | Chuck Kendall / Pete Smith / Dennis Aase | Porsche Carrera RSR | Charles Kendall | 2:51.3320 |
| 20th | 41 | Billy Hagan / Terry Labonte | Chevrolet Camaro | Stratagraph | 2:52.2560 |
| 21st | 82 | Jim Cook / John Casey / Bob Bergstrom | Mazda RX-7 | Trinity Racing | 2:52.4220 |
| 22nd | 97 | Don Cummings / Tom Juckette | Chevrolet Monza | The Cummings Marque | 2:55.4360 |
| 23rd | 54 | Albert Naon / Tony Garcia / Hiram Cruz | Porsche Carrera RSR | Florida Crystals/Montura Racing | 2:55.7540 |
| 24th | 24 | Jack Refenning / Ren Tilton / Peter Welter | Porsche 934 | Jack Refenning | 2:56.3980 |
| 25th | 7 | Jim Mullen / Michael Zimicki | Mazda RX-7 | Loud Car Racing | 2:57.6810 |
| 26th | 04 | Rene Rodriguez / Tico Almeida / Miguel Morejon | Porsche Carrera RSR | T & R Racing | 2:57.7540 |
| 27th | 93 | John Carusso / Russ Boy / Rex Ramsey | Chevrolet Corvette | Sanyo/Russ Boy | 2:57.9940 |
| 28th | 62 | Bill Koll / Jeff Kline | Porsche 911 S | Kegel Enterprises | 2:58.6500 |
| 29th | 85 | Jeff Loving | Chevrolet Camaro | Sunrise Auto Parts | 2:59.0170 |
| 30th | 48 | Bill McDill / Robert Whitaker | Chevrolet Camaro | Meldeau Tire Stores | 3:00.0120 |
| 31st | 79 | Lance Van Every | Porsche Carrera RSR | Van Every Racing | 3:00.2380 |
| 32nd | 45 | Dwight Mitchell / Ray Ratcliff / Bill Cooper | Porsche 914/6 | Autosport Technology | 3:00.3730 |
| 33rd | 83 | George Shafer / Craig Shafer / Al Crookston | Chevrolet Camaro | George R. Shafer | 3:00.6550 |
| 34th | 70 | Chris Doyle | Mazda RX-7 | Doyle Racing | 3:01.3980 |
| 35th | 32 | George Alderman / John McComb | Datsun 240Z | Alderman Datsun | 3:02.2690 |
| 36th | 43 | Bob Gregg / Bob Young / Joe Varde | Porsche Carrera | Bob Gregg Racing | 3:02.4770 |
| 37th | 68 | Richard Valentine / Maurice Carter | Chevrolet Corvette | USA Racing | 3:02.5100 |
| 38th | 03 | Angelo Pallavicini | Porsche 934 | Angelo Pallavicini | 3:02.6200 |
| 39th | 57 | Wayne Baker / Robert Overby / Dan Gilliland | Porsche 914/6 | Personalized Autohaus | 3:02.8110 |
| 40th | 73 | M. L. Speer / Eddy Joosen / Dirk Vermeersch | Mazda RX-7 | Z & W Enterprises | 3:03.0610 |
| 41st | 44 | Bob Tullius / Bill Adam | Triumph TR8 | Group 44 | 3:03.0960 |
| 42nd | 4 | John Kelly / Pat Bedard | Triumph TR8 | Group 44 | 3:03.4540 |
| 43rd | 05 | Fred Flaquer / Joe Gonzalez / Angelo Dominguez | Porsche Carrera RSR | Miguel Morejon | 3:03.6600 |
| 44th | 49 | Al Cosentino / Bob Speakman | Mazda RX-7 | Faza Squadra | 3:03.7020 |
| 45th | 39 | John Higgins / Chip Mead / Bill Johnson | Porsche 911 | The Foreign Exchange | 3:04.5170 |
| 46th | 27 | Kenneth LaGrow / Jack Turner | Chevrolet Camaro | Kenneth LaGrow/Jack Holley | 3:04.5590 |
| 47th | 98 | Lee Mueller / Walt Bohren | Mazda RX-7 | Kent Racing | no time |
| 48th | 28 | Sam Posey / Fred Stiff | Datsun 280ZX | NTS Racing | 12:50.2500 |
| 49th | 66 | Jack Dunham / Tom Sheehy / Luis Sereix | Mazda RX-7 | Dunham Trucking | 3:05.1720 |
| 50th | 92 | Kathy Rude / Divina Galica | Mazda RX-7 | Kent Racing | no time |
| 51st | 55 | Roger Mandeville / Amos Johnson | Mazda RX-7 | Mandeville Racing Ent. | no time |
| 52nd | 29 | Nort Northam / Chiqui Soldevilla | Porsche Carrera RSR | Bill Ferran | 3:07.4640 |
| 53rd | 34 | George Drolsom / Rob Hoskins / Buzz Marcus | Porsche 924 Carrera GTR Turbo | Drolsom Racing | 3:06.7700 |
| 54th | 13 | John Lino | Chevrolet Corvette | Garcia Racing | no time |
| 55th | 15 | Doug Lutz / Dave Panaccione | Porsche 911 Carrera RSR | D. L. Performance Engineering | 3:05.5320 |
| 56th | 53 | Fritz Hochreuter / Rainer Brezinka / Gary Hirsch | Porsche Carrera | Fritz Hochreuter | 3:09.3310 |
| 57th | 60 | Bob Lee / Vicki Smith / Tom Alan Marx | AMC AMX | Bob's Speed Products | 3:10.0070 |
| 58th | 50 | Jim Downing / Irv Hoerr / Scott Hoerr | Mazda RX-7 | Downing/Maffucci Racing | 3:07.4000 |
| 59th | 81 | Steve Dietrich / Tom Winters / Hugh McDonough | Mazda RX-7 | Trinity Racing | 3:03.5650 |
| 60th | 52 | Jack Swanson / Tom Cripe / Van McDonald | Porsche 911 | Ours & Hours Racing | 3:10.2970 |
| 61st | 23 | Tim Selby / Earl Roe | Porsche Carrera | Roe/Selby Racing | 3:13.0760 |
| 62nd | 02 | John Morton / Tom Klausler | Ford Mustang | Firestone Tire & Rubber | 3:09.8900 |
| 63rd | 88 | Klaus Bitterauf / James Moxley / Jim Leo | Porsche 911 | Klaus Bitterauf | 3:13.3060 |
| 64th | 89 | Al Levenson | Chevrolet Corvette | Vette Brakes | 3:13.4400 |
| 65th | 77 | Bruce Jennings / Bill Bean / Tom Ashby | Porsche 911 | Bruce R. Jennings | 3:20.2820 |
| 66th | 16 | Doug Grunnet / Jim Burt / Steve Paquette | Mazda RX-7 | Corp Racing Ltd. | 3:12.1070 |
| 67th | 12 | Jimmy Tumbleston / Bobby Dumont / Ford Smith | Chevrolet Camaro | Performance Marine Racing | 3:37.7740 |
| 68th | 37 | Janis Taylor | Alfa Romeo GTV | Vince Thompson | no time |
| 69th | 84 | "Jamsal" / Eduardo Barrientos / Guillermo Valiente | Porsche 935 M16 | Scorpio Racing | no time |
| 70th | 31 | Anatoly Arutunoff / José Marina | Lancia Stratos | Hallet Motor Racing Circuit | 3:28.8580 |
| 71st | 38 | Ron Case | Porsche 911 | Case Racing | 3:15.9850 |
| 72nd | 75 | Pierre Honegger / Pierre Dieudonné / Jean-Paul Libert | Mazda RX-7 | Z & W Enterprises | no time |
| 73rd | 61 | C. C. Canada | Chevrolet Corvette | Sharkskin Racing | 3:09.8370 |
| 74th | 21 | Peter Aschenbrenner | Porsche 914/6 | Alps Restoration | 3:16.9840 |
| 75th | 72 | Del Russo Taylor / Rex Ramsey | Chevron GTP Alfa Romeo | Vince Thompson | no time |
| 76th | 56 | Rick Borlase | Porsche Carrera | Rick Borlase | 3:07.4380 |
| 77th | 67 | Mike Ramirez / Luis Gordillo / Manuel Villa | Porsche 911 | Pennzoil of Puerto Rico | 3:14.4050 |
| 78th | 42 | Joe Cotrone / Kal Showket | Chevrolet Corvette | Cotrone Racing Enterprises | no time |