| 1st | 6 | John Fitzpatrick / Dick Barbour | Porsche 935 K3 | Dick Barbour Racing | 2:34.0530 |
| 2nd | 86 | Peter Gregg / Hurley Haywood / Bruce Leven | Porsche 935/77A | Bayside Disposal Racing | 2:34.7920 |
| 3rd | 93 | Don Whittington / Bill Whittington / Dale Whittington | Porsche 935 K3 | Whittington Bros. | 2:36.8430 |
| 4th | 30 | Gianpiero Moretti / Giorgio Pianta / Renzo Zorzi | Porsche 935J | Electrodyne | 2:39.7590 |
| 5th | 05 | Bob Akin / Roy Woods / Skeeter McKitterick | Porsche 935 K3 | Mendez/Woods/Akin | 2:41.5330 |
| 6th | 9 | Bob Garretson / Bobby Rahal / Kees Nierop | Porsche 935 K3 | Dick Barbour Racing | 2:42.1690 |
| 7th | 0 | Ted Field / Danny Ongais | Porsche 935 K3/80 | Interscope Racing | 2:42.5630 |
| 8th | 3 | Jim Busby / Bruce Jenner / Rick Knoop | March-BMW M1 | Jim Busby Industries | 2:43.5710 |
| 9th | 07 | Ludwig Heimrath / Johnny Rutherford / Carlos Moran | Porsche 935 | Ludwig Heimrath | 2:45.2810 |
| 10th | 80 | Maurice Carter / Craig Carter / Murray Edwards | Chevrolet Camaro | All Canadian/Peerless | 2:46.0920 |
| 11th | 09 | John Paul / Preston Henn / Al Holbert | Porsche 935 K3 | Thunderbird Swap Shop | 2:39.6390 |
| 12th | 5 | Charles Mendez / Brian Redman / Paul Miller | Porsche 935 K3 | Mendez/Woods/Akin | 2:39.9490 |
| 13th | 13 | Randolph Townsend / John Morton | Porsche 935 | Andial Racing | 2:47.0910 |
| 14th | 25 | Dave Cowart / Kenper Miller / Derek Bell | BMW M1 | Red Lobster Racing | 2:47.9050 |
| 15th | 55 | Ralph Kent-Cooke / Lyn St. James | Porsche 935 | Condor Racing | 2:50.5250 |
| 16th | 4 | Buzz Marcus / Bob Harmon / Marty Hinze | Porsche 935 | Dick Barbour Racing | 2:50.5740 |
| 17th | 50 | R. V. Shulnburg / Michael Keyser / Tim Morgan | Chevrolet Corvette | Shulnburg Scrap Metal | 2:50.8540 |
| 18th | 37 | Honorato Espinosa / Jorge Cortes | Porsche Carrera RSR | Botero Racing | 2:52.8030 |
| 19th | 58 | Mandy Gonzalez / Diego Febles / Chiqui Soldevilla | Porsche 934 | Coco Lopez/Pina Colada | 2:53.3280 |
| 20th | 10 | Dave Heinz / Bob Nagel | Chevrolet Camaro II | Oftedahl Trucking | 2:53.4860 |
| 21st | 44 | Bob Tullius / Bill Adam | Triumph TR8 | Group 44 | 2:55.8900 |
| 22nd | 38 | Bonky Fernandez / Tato Ferrer / Ulrich Lange | Porsche Carrera RSR | Boricua Racing | 2:56.3340 |
| 23rd | 02 | Tico Almeida / Rene Rodriguez / Gabriel Riano | Chevrolet Corvette | T & R Racing | 2:56.4110 |
| 24th | 68 | Luis Mendez / Jaime Rodriguez / Ernesto Soto | Porsche 911 Carrera RSR | Porsche Montecarlo | 2:56.6300 |
| 25th | 21 | Bob Young / Bob Lazier | Chevrolet Camaro | Oftedahl Trucking | 2:57.0270 |
| 26th | 54 | Tony Garcia / Albert Naon / Terry Herman | Porsche Carrera RSR | Montura Racing | 2:57.0800 |
| 27th | 62 | Nobuhide Tachi | Dome Toyota Celica Turbo | Tom's/Dome/Kegel Enterprises | 2:57.0940 |
| 28th | 82 | John Casey / Steve Dietrich / Lee Mueller | Mazda RX-7 | Trinity Racing | 2:57.8440 |
| 29th | 03 | Werner Frank / James Brolin | Porsche 934 | Toyota Village | 2:58.2740 |
| 30th | 60 | Bill Ferran / Rusty Bond / Jack Refenning | Porsche Carrera RSR | Bill Ferran | 2:58.6230 |
| 31st | 89 | Ernesto Soto / Luis Rodriguez | Porsche Carrera RSR | Hector Huerta Racing | 2:59.0930 |
| 32nd | 28 | Robert Overby | Porsche 911 | Hamilton House Racing | 2:59.7880 |
| 33rd | 98 | Lance Van Every / Ash Tisdelle | Porsche Carrera RSR | Van Every Racing | 3:00.3410 |
| 34th | 96 | Sam Posey / George Alderman / Fred Stiff | Datsun 240Z | NTS Racing | 3:01.0440 |
| 35th | 92 | Roger Schramm / Rudy Bartling | Porsche Carrera RSR | Framm Promotions | 3:01.0480 |
| 36th | 61 | Vince Muzzin | Chevrolet Corvette | Tim Morgan | 3:01.1230 |
| 37th | 73 | Pierre Honegger / Mark Hutchins / Walt Bohren | Mazda RX-7 | Z & W Enterprises | 3:01.2290 |
| 38th | 79 | Bob Bergstrom / Pat Bedard | Mazda RX-7 | Sports Ltd. Racing | 3:01.4720 |
| 39th | 40 | Joe Cotrone / Emory Donaldson / Phil Currin | Chevrolet Corvette | Joe Cotrone | 3:01.5970 |
| 40th | 77 | Roger Mandeville / Jim Downing / Brad Frisselle | Mazda RX-7 | Mandeville Racing | 3:02.0870 |
| 41st | 06 | Jim Mullen / Paul Fassler / Craig Siebert | Porsche Carrera RSR | Fassler-Mullen Racing | 3:02.1810 |
| 42nd | 32 | "Jamsal" / Carlos Pineda | Porsche Carrera RSR | Scorpio Racing | 3:02.3590 |
| 43rd | 46 | Mauricio DeNarvaez / Ricardo Londono | Porsche 911 Carrera RSR | de Narvaez Enterprises | 3:02.6320 |
| 44th | 48 | John Carusso | Chevrolet Corvette | Dynasales | 3:02.7320 |
| 45th | 65 | Ralph Noseda | Chevrolet Camaro | Jeffrey Loving | 3:03.5740 |
| 46th | 83 | David Deacon / Peter Moennick | Porsche Carrera | David Deacon | 3:03.9820 |
| 47th | 99 | Russ Boy / Tom Hunt | Chevrolet Corvette | National Jets | 3:05.5500 |
| 48th | 88 | Herb Adams / Jerry Thompson | Pontiac Fire-Am | Herb Adams V.S.E. | 3:05.5560 |
| 49th | 56 | Rick Borlase / Don Kravig / Michael Hammond | Porsche 911 | Rick Borlase | 3:06.3770 |
| 50th | 81 | Mark Welch / Tom Winters / Jim Cook | Mazda RX-7 | Trinity Racing | 3:06.4280 |
| 51st | 70 | Chris Doyle / Charles Guest / Mike Meyer | Mazda RX-7 | Chris Doyle | 3:06.8610 |
| 52nd | 7 | Lou Statzer / Amos Johnson / Dennis Shaw | AMC Spirit AMX | Caribbean AMC/Jeep | 3:07.4450 |
| 53rd | 15 | Alf Gebhardt / Bruno Beilcke | BMW CSL | Bavarian Motors International | 3:08.5660 |
| 54th | 84 | Bard Boand / Robert Kivela / Ray Irwin | Chevrolet Corvette | Bard Boand Racing | 3:09.3210 |
| 55th | 36 | Dave Panaccione | Porsche 911 | Case Racing | 3:09.4220 |
| 56th | 8 | Anatoly Arutunoff | Lancia Stratos | A. I. Honda | 3:09.7010 |
| 57th | 41 | Herb Jones, Jr. / Steve Faul / Kent Combs | Buick Skylark | Jones Industries Racing | 3:09.7580 |
| 58th | 85 | John Hulen / Ron Coupland | Porsche 914/6 | John E. Hulen | 3:10.3260 |
| 59th | 95 | Mike Ramirez / Manuel Villa / Luis Gordillo | Porsche 911 | Mike Ramirez | 3:11.0660 |
| 60th | 31 | Juan Lopez / Jose Arzeno | Porsche 911 | Lopez Bros. | no time |
| 61st | 49 | Warwick Henderson / Bob Copeman / John Humphreys | Porsche Carrera | Tortilla Flats Racing | no time |
| 62nd | 51 | Robert Kirby / Freddy Baker / Michael Sherwin | Porsche Carrera RSR | Kirby-Hitchcock Racing | no time |
| 63rd | 78 | Bruce Nesbitt / Alan Johnson | Mazda RX-2 | Revolution Wheels | no time |
| 64th | 57 | Wayne Baker / Jeff Scott / Dan Gilliland | Porsche 914/4 | Personalized Porsche | no time |
| 65th | 14 | George Garcia / Vic Shinn / Daniel Vilarchao | Chevrolet Corvette | George Garcia | no time |
| 66th | 66 | George Shafer / Craig Shafer / Al Crookston | Datsun 240Z | George R. Shafer | no time |
| 67th | 17 | Tim Chitwood | Chevrolet Nova | Tim Chitwood | no time |
| 68th | 08 | Ray Ratcliff / M. L. Speer / Terry Wolters | Porsche 911 | Moran Construction | no time |
| 69th | 12 | Ford Smith / Bruce Jernigan | Chevrolet Camaro | Performance Marine | no time |
| 70th | 23 | Bob Zulkowski / Dennis Brisken / Gary Nylander | Porsche 914/6 | Metalcraft Racing | no time |
| 71st | 22 | Gary Hirsch / Rainer Brezinka / Peter Aschenbrenner | Porsche 914/6 | R & H Racing | no time |
| 72nd | 90 | Bob Lee / Rick Kump / Jim Leo | AMC AMX | Bob's Speed Products | no time |
| 73rd | 74 | Carlos Ramirez | Mazda RX-7 | Z & W Enterprises | no time |
| 74th | 87 | Klaus Bitterauf / James Moxley / Vicki Smith | Porsche 911 | Der Klaus Haus | no time |
| 75th | 71 | Bruce Jennings / Bill Bean / Tom Ashby | Porsche 911 | Bruce Jennings | no time |
| 76th | 34 | George Drolsom / Bill Johnson / Rob Hoskins | Porsche 911 | Drolsom Racing | no time |
| 77th | 27 | Kenneth LaGrow / William Boyer / Jack Turner | Chevrolet Camaro | Holley & LaGrow | no time |
| 78th | 24 | Vince DiLella / Manuel Cueto | Porsche 914/6 | DiLella Racing | no time |
| 79th | 35 | Del Russo Taylor / Janis Taylor / Dave Cavenaugh | Alfa Romeo Alfetta | Janis Taylor | no time |