| 1st | 59 | Peter Gregg / Klaus Ludwig | Porsche 935/79 | Brumos Porsche | 1:40.7960 |
| 2nd | 18 | John Paul / Al Holbert | Porsche 935 JLP-1 | JLP Racing | 1:42.8690 |
| 3rd | 6 | Rolf Stommelen / Brian Redman / Dick Barbour | Porsche 935/77A | Dick Barbour Racing | 1:44.2470 |
| 4th | 3 | Jim Busby | BMW 320i Turbo | Jim Busby Racing | 1:44.4230 |
| 5th | 19 | Chris Cord / Jim Adams | Chevrolet Monza | Chris Cord | 1:44.7600 |
| 6th | 2 | Manfred Winkelhock / David Hobbs | BMW 320i Turbo | McLaren North America | 1:45.2840 |
| 7th | 94 | Don Whittington / Bill Whittington | Porsche 935/79 | Whittington Brothers Racing | 1:45.3700 |
| 8th | 09 | Bob Bondurant / Preston Henn | Porsche 935/77A | Thunderbird Swap Shop | 1:45.5210 |
| 9th | 00 | Ted Field / Milt Minter | Porsche 935/77A | Interscope Racing | 1:47.3860 |
| 10th | 5 | Charles Mendez / Paul Miller | Porsche 935 | Busch Beer Racing | 1:47.9090 |
| 11th | 10 | Otis Chandler / John Thomas | Porsche 935/79 | Otis Chandler | 1:48.2150 |
| 12th | 4 | Skeeter McKitterick / Bob Garretson / Gary Belcher | Porsche 935 | Dick Barbour Racing | 1:48.6750 |
| 13th | 9 | Rob McFarlin / Roy Woods / Bob Akin | Porsche 935 | Dick Barbour Racing | 1:48.7310 |
| 14th | 13 | Hal Shaw, Jr. | Porsche 935 | Hal Shaw Racing | 1:51.0510 |
| 15th | 24 | Tom Frank / Ralph Kent-Cooke | Chevrolet Monza | Tom Frank | 1:52.3490 |
| 16th | 55 | Howard Meister / Rick Knoop | Porsche Carrera RSR | Alan L. Johnson | 1:53.0200 |
| 17th | 49 | Phil Currin / John Carusso | Chevrolet Corvette C3 | Autodyne | 1:53.9580 |
| 18th | 54 | Tony Garcia / Terry Herman | Porsche Carrera RSR | Montura Racing | 1:54.8570 |
| 19th | 23 | Jim Cook / Robert Kirby | Porsche Carrera | Cerwin-Vega | 1:55.6680 |
| 20th | 38 | Tato Ferrer / Bonky Fernandez | Porsche Carrera RSR | Boricua Racing | 1:55.8060 |
| 21st | 32 | Honorato Espinosa / Francisco Lopez / Jorge Cortes | Porsche Carrera RSR | Botero Racing | 1:56.0760 |
| 22nd | 41 | Herb Jones, Jr. | Chevrolet Camaro | Jones Ind. Racing | 1:56.1550 |
| 23rd | 83 | Don Devendorf / Tony Adamowicz | Datsun 280ZX | Electramotive | 1:56.3970 |
| 24th | 07 | Dave Cowart / Kenper Miller | Porsche Carrera RSR | Morrison's | 1:56.9120 |
| 25th | 64 | Dennis Aase / Alan Johnson | Porsche 911 | Dennis Aase | 1:57.0470 |
| 26th | 34 | Craig Richie | Porsche 911 | Craig Richie | 1:58.0590 |
| 27th | 33 | Sam Posey | Datsun 280ZX | Bob Sharp Racing | 1:58.2400 |
| 28th | 17 | Jeff Kline / Jim Mederer | Mazda RX-7 | Racing Beat | 1:58.6000 |
| 29th | 31 | Tom Alan Marx | Porsche 911 Carrera RSR | RSR Associates | 1:59.2700 |
| 30th | 77 | Roger Mandeville / Jim Downing | Mazda RX-7 | Roger Mandeville | 1:59.3060 |
| 31st | 62 | Bill Koll / Bill Bean | Porsche 914/6 | Koll Motor Sports | 1:59.8440 |
| 32nd | 46 | Mauricio DeNarvaez / Albert Naon | Porsche 911 Carrera RSR | de Narvaez Racing | 2:00.1120 |
| 33rd | 06 | Jon Milledge / Darrel Overstreet | Porsche 914/6 | Darrel Overstreet | 2:00.1690 |
| 34th | 35 | Stu Fisher / Ed Parks | Mazda RX-7 | JLC Racing | 2:00.2880 |
| 35th | 56 | Rick Borlase / Don Kravig | Porsche 911 | Rick Borlase | 2:00.5580 |
| 36th | 01 | Dave White / Pat Bedard | BMW 320i | J. Kurt Roehrig | 2:00.9460 |
| 37th | 37 | Gerry Wellik | Chevrolet Corvette | Doug Rippie | no time |
| 38th | 22 | Rich Mandella | Porsche 914/6 | Cerwin-Vega | no time |
| 39th | 26 | John Ware | Chevrolet Camaro | John Ware | no time |
| 40th | 82 | Rodd Harrison / William Brewster | Porsche 914/6 | Schneider Autohaus | no time |
| 41st | 21 | Steve Earle / Pete Smith | Porsche Carrera | Vasek Polak | no time |
| 42nd | 11 | Bobbee Nylander | Porsche 911 | Race Tech | no time |
| 43rd | 60 | Rusty Bond / Ren Tilton | Porsche 911 | E. J. Pruitt | no time |
| 44th | 51 | Tom Lawson | Porsche 914/6 | John Goodspeed | no time |
| 45th | 16 | George Follmer / Brett Lunger / Derek Bell | Porsche 935/77A | Vasek Polak | no time |
| 46th | 30 | Gianpiero Moretti / Hurley Haywood | Porsche 935/79 | Electrodyne/Moretti | no time |
| 47th | 79 | Bob Bergstrom / Brad Frisselle | Mazda RX-7 | Sports Ltd. Racing | no time |
| 48th | 63 | Greg Gustafson / Pete Halsmer | Porsche 911 | Greg Gustafson | no time |
| 49th | 48 | Frank Leary / Casey Mollett | Datsun 240Z | Frank Leary | no time |
| 50th | 52 | Wayne Baker / Tom Winters | Porsche 914/4 | Personalized Autohaus | no time |
| 51st | 39 | Cliff Hansen / John Higgins | Porsche 911 | Barrick Motor Racing | no time |
| 52nd | 12 | Mandy Gonzalez / John Morton | Porsche 935 | Vasek Polak | no time |
| 53rd | 8 | Anatoly Arutunoff / José Marina | Lancia Stratos | Automobile International | no time |
| 54th | 25 | Bob Zulkowski / Bernie Storc | Porsche 914/6 | Metal Craft Racing | no time |
| 55th | 7 | Walt Bohren / Ron Cortez | Mazda RX-7 | Walt Bohren Racing | no time |
| 56th | 15 | Alf Gebhardt / Bruno Beilcke | BMW 3.5 CSL | Bavarian Motors International | no time |