| 1st | 93 | Bill Whittington / Don Whittington / Dale Whittington | Porsche 935 K3 | Whittington Bros. | 1:44.1100 |
| 2nd | 2 | Reinhold Jöst / Rolf Stommelen / Volkert Merl | Porsche 935J | Liqui Moly | 1:45.3890 |
| 3rd | 6 | John Fitzpatrick / Manfred Schurti / Dick Barbour | Porsche 935 K3 | Dick Barbour Racing | 1:46.0090 |
| 4th | 59 | Peter Gregg / Hurley Haywood / Bruce Leven | Porsche 935/79 | Brumos Porsche Audi | 1:48.0240 |
| 5th | 94 | Dale Whittington / Axel Plankenhorn | Porsche 935/79 | Whittington Bros. | 1:49.5140 |
| 6th | 07 | Ludwig Heimrath | Porsche 935 | Heimrath Racing | 1:49.7110 |
| 7th | 13 | Elliot Forbes-Robinson / Randolph Townsend / Howard Meister | Porsche 935 | Andial Racing | 1:49.9540 |
| 8th | 0 | Ted Field / Danny Ongais / Milt Minter | Porsche 935 K3/80 | Interscope Racing | 1:51.0210 |
| 9th | 80 | Maurice Carter / Craig Carter / Murray Edwards | Chevrolet Camaro II | All Canadian Racing | 1:51.2960 |
| 10th | 19 | Chris Cord / Jim Adams | Chevrolet Monza | Chris Cord Racing | 1:53.2790 |
| 11th | 30 | Gianpiero Moretti | Porsche 935J | Electrodyne | 1:52.8190 |
| 12th | 9 | Skeeter McKitterick / Bob Garretson / Anny-Charlotte Verney | Porsche 935 | Dick Barbour Racing | 1:53.3280 |
| 13th | 09 | John Paul / Al Holbert | Porsche 935/77A | Thunderbird Swap Shop | 1:53.4360 |
| 14th | 55 | Ralph Kent-Cooke / Gérard Bleynie / Claude Ballot-Léna | Porsche 935 | Racing Associates | 1:54.2940 |
| 15th | 00 | Ted Field / Danny Ongais / Milt Minter | Porsche 935/77A | Interscope Racing | 1:54.8780 |
| 16th | 4 | Martino Finotto / Carlo Facetti | Lancia Beta Montecarlo Turbo | Jolly Club | 1:54.9710 |
| 17th | 11 | Michael Korten / Patrick Neve / Ian Grob | March-BMW M1 | March Engineering | 1:54.9780 |
| 18th | 3 | Jim Busby / Bruce Jenner / Rick Knoop | March-BMW M1 | Jim Busby Racing | 1:56.6590 |
| 19th | 05 | Bob Akin / Roy Woods / Bobby Rahal | Porsche 935 K3 | Racing Associates | 1:57.1710 |
| 20th | 5 | Charles Mendez / Brian Redman / Paul Miller | Porsche 935 K3 | Racing Associates | 1:57.6750 |
| 21st | 25 | Kenper Miller / Dave Cowart / Christine Beckers | BMW M1 | Deren Automotive | 1:57.9650 |
| 22nd | 99 | Phil Currin | Chevrolet Corvette | Full-Time Racing | 1:58.7570 |
| 23rd | 69 | Preston Henn / Pierre Dieudonné | Ferrari 512 BB | Preston Henn | 1:59.4030 |
| 24th | 14 | Pierre Dieudonné / Jorge Koechlin / Leon Walger | Porsche 935 | Renaissance Group Racing | 1:59.4970 |
| 25th | 10 | Dave Heinz / Gerry Wellik / Bob Young | Chevrolet Camaro II | Oftedahl Trucking | 1:59.8840 |
| 26th | 24 | Jack Refenning / Ray Mummery / Ren Tilton | Porsche 934 | American Racing Team | 1:59.9310 |
| 27th | 44 | Bob Tullius / John McComb / John Kelly | Triumph TR8 | Group 44 | 2:00.9450 |
| 28th | 46 | Mauricio DeNarvaez / Albert Naon / Ricardo Londono | Porsche 911 Carrera RSR | DeNarvaez Racing | 2:01.3350 |
| 29th | 65 | John Morton / Tony Adamowicz | Ferrari 365 GTB/4 | Nicholas/McRoberts Racing | 2:01.5400 |
| 30th | 17 | Walt Bohren | Mazda RX-7 | Racing Beat | 2:02.3230 |
| 31st | 03 | Werner Frank | Porsche 934 | Toyota Village | 2:03.0430 |
| 32nd | 8 | Bob Beasley / Chuck Grantham / George Stone | Porsche Carrera RSR | Bob Beasley | 2:03.1540 |
| 33rd | 75 | Dale Kreider / Billy Hagan / Stephen Bond | Chevrolet Corvette C3 | Show Cars of Florida | 2:03.2810 |
| 34th | 23 | Don Devendorf / Dick Davenport / Frank Carney | Datsun 280ZX | Frank L. Carney | 2:03.5450 |
| 35th | 37 | Honorato Espinosa / Jorge Cortes / Francisco Lopez | Porsche Carrera RSR | Botero Racing | 2:03.7270 |
| 36th | 38 | Bonky Fernandez / Tato Ferrer / Kees Nierop | Porsche Carrera RSR | Boricua Racing | 2:04.1940 |
| 37th | 89 | Francisco Romero / Jean-Paul Libert / Ernesto Soto | Porsche 911 Carrera RSR | Hector Huerta | 2:04.8400 |
| 38th | 77 | Roger Mandeville / Jim Downing / Brad Frisselle | Mazda RX-7 | Roger Mandeville | 2:04.8740 |
| 39th | 76 | Joe Chamberlain / John Chamberlain / Richard Valentine | Chevrolet Corvette C3 | Arrow Heating Co. | 2:05.0620 |
| 40th | 54 | Tony Garcia / Alberto Vadia / Terry Herman | Porsche Carrera RSR | Montura Racing | 2:05.0780 |
| 41st | 68 | Luis Mendez / Tico Almeida / Rene Rodriguez | Porsche 911 Carrera RSR | T & R Racing | 2:05.2980 |
| 42nd | 39 | Allan Moffat / Amos Johnson / Stu Fisher | Mazda RX-7 | JLC Racing | 2:05.4270 |
| 43rd | 73 | Mark Hutchins / Pierre Honegger / Fred Apgar | Mazda RX-7 | Z&W Enterprises | 2:05.8010 |
| 44th | 58 | Diego Febles | Porsche 911 Carrera RSR | Coco Lopez-Pina Colada | 2:06.1920 |
| 45th | 82 | John Casey / Steve Dietrich / Lee Mueller | Mazda RX-7 | Trinity Racing | 2:06.3220 |
| 46th | 98 | Lance Van Every / Ash Tisdelle / Bill Johnson | Porsche Carrera RSR | Van Every Racing | 2:07.0330 |
| 47th | 79 | Bob Bergstrom / Pat Bedard | Mazda RX-7 | Sports Ltd. Racing | 2:07.1880 |
| 48th | 62 | Bill Koll / Jim Cook / Greg LaCava | Porsche 914/6 | William J. Koll | 2:07.3220 |
| 49th | 32 | "Jamsal" / Carlos Pineda / Eduardo Barrientos | Porsche Carrera RSR | Scorpio Racing | 2:07.3770 |
| 50th | 15 | Alf Gebhardt / Bruno Beilcke | BMW CSL | Bavarian Motors International | 2:07.7890 |
| 51st | 71 | Philip Keirn / Larry Trotter / Ed Errington | Chevrolet Corvette C3 | Keirn Garage | 2:07.9320 |
| 52nd | 56 | Rick Borlase / Don Kravig / Michael Hammond | Porsche 911 | Rick Borlase | 2:08.7760 |
| 53rd | 16 | Kim Mason | Chevrolet Corvette C3 | Yenko Chevrolet-Honda | 2:09.4720 |
| 54th | 88 | | Pontiac Firebird Fire-Am | Herb Adams VSE | 2:10.3990 |
| 55th | 22 | Volker Bruckmann / David Goodell / Rug Cunningham | Porsche Carrera | Group Bruckmann | 2:10.4340 |
| 56th | 42 | Dick Neland / Bill Ferran / Joe Cotrone | Chevrolet Camaro | Dick Neland | 2:10.6330 |
| 57th | 08 | M. L. Speer / Ray Ratcliff / Terry Wolters | Porsche 911 | Moran Construction | 2:10.6460 |
| 58th | 70 | Chris Doyle / Charles Guest / Mike Meyer | Mazda RX-7 | Herman Racing | 2:10.7190 |
| 59th | 78 | Robert Giesel / Bruce Nesbitt / Alan Johnson | Mazda RX-2 | Revolution Wheels | 2:11.9900 |
| 60th | 85 | David Deacon / Peter Moennick / Jacques Bienvenue | Porsche Carrera | David Deacon | 2:12.1940 |
| 61st | 51 | Robert Kirby / John Hotchkis / John Hotchkis, Jr. | Porsche Carrera RSR | Moana Corp. | no time |
| 62nd | 06 | Joe DiBattista / Tom Ciccone / Alan Howes | Porsche 911 | Intrepid, Inc. | no time |
| 63rd | 52 | Joseph Hamilton / Tom Cripe / Fred Snow | Porsche 911 | Snowmobile Racing | no time |
| 64th | 28 | Tom Nehl / Peter Kirill / Kathy Rude | Chevrolet Camaro | Tom Nehl | no time |
| 65th | 96 | Bob Earl / William Coykendall / Fred Stiff | Datsun 240Z | NTS Racing | no time |
| 66th | 92 | Don Cummings / Guido Levetto | Shelby GT350 | The Cummings Marque | no time |
| 67th | 57 | Wayne Baker / Dan Gilliland / Jeff Scott | Porsche 914/4 | Independent Personalized | no time |
| 68th | 83 | Harro Zitza | Porsche 914/6 | Zotz Garage | no time |
| 69th | 18 | Anatoly Arutunoff | Lancia Stratos | Automobile International | no time |
| 70th | 63 | Nort Northam / Hugh Davenport | Chevrolet Camaro | Guy Thomas | no time |
| 71st | 95 | Mike Ramirez / Manuel Villa / Luis Gordillo | Porsche 911 | Mike Ramirez Racing | no time |
| 72nd | 81 | Lyn St. James / Mark Welch / Tom Winters | Mazda RX-7 | Trinity Racing | no time |