| 1st | 1 | Ickx / Mass / *Barth | Porsche 935 | Martini Racing Porsche System | 1:48.2890 | 205.4456 |
| 2nd | 8 | Jöst / Wollek / Krebs | Porsche 935 | Porsche Kremer Racing | 1:49.0990 | |
| 3rd | 20 | Rondeau / Beltoise / *Holbert | Inaltera Ford | Inaltera Motors | 1:52.7200 | |
| 4th | 21 | Beckers / Lombardi / *Rondeau | Inaltera Ford | Inaltera Motors | 1:54.2620 | |
| 5th | 3 | Finotto / Facetti / Camathias | Porsche 935 | Jolly Club | 1:55.0470 | |
| 6th | 00 | Ongais / *Follmer / *Field | Porsche 911 Carrera RSR Turbo | Interscope Racing | 1:56.7380 | |
| 7th | 61 | Gregg / Busby | Porsche 934 | Brumos Racing | 1:56.8940 | 190.3226 |
| 8th | 14 | Holbert / Keyser / Ballot-Léna | Chevrolet Monza | Dickinson/Holbert Racing | 1:57.4170 | |
| 9th | 47 | Fitzpatrick / Miller / Miller | BMW 3.5 CSL | KWM Racing | 1:58.0420 | |
| 10th | 05 | Trueman / Thompson / Yenko | Chevrolet Monza | Red Roof Inns, Inc. | 1:59.7280 | |
| 11th | 55 | Thompkins / Heinz / Mann | Chevrolet Corvette | Rick Thompkins | 2:01.3990 | |
| 12th | 43 | Haywood / Graves / Helmick | Porsche Carrera RSR | Ecurie Escargot | 2:01.4990 | |
| 13th | 41 | Jones, Jr. / Faul | Chevrolet Camaro II | Jones Ind. Racing | 2:02.0700 | |
| 14th | 96 | Felton / Cason / Reeve | Chevrolet Camaro | Clay Young | 2:02.4870 | |
| 15th | 78 | Headley / Feinstein / *Panzarella | Chevrolet Corvette | Babe's Garage | 2:02.7910 | |
| 16th | 24 | Frank / Shafer | Porsche Carrera RSR | Executive Industries | 2:02.8450 | |
| 17th | 63 | Field / Woodner / *Holmes / *Ongais | Porsche 911 Carrera RSR 3.0 | Interscope Racing | 2:02.8930 | |
| 18th | 58 | Febles / Gonzalez / Cruz | Porsche 911 Carrera RSR | Diego Febles Racing | 2:03.0100 | |
| 19th | 2 | Hobbs / Peterson / Posey | BMW 320 | BMW Motorsport GmbH | 2:03.0310 | |
| 20th | 99 | Currin / Hoskins / Knab | Chevrolet Corvette | Phil Currin | 2:03.5970 | |
| 21st | 30 | Dyer / Frisselle | Porsche 911 Carrera RSR 3.0 | George Dyer | 2:04.4100 | |
| 22nd | 64 | Forbes-Robinson / Newman / Minter | Ferrari 365 GTB/4 | Ramsey Ferrari/Modena | 2:05.0590 | |
| 23rd | 77 | Greenwood / Mancuso / Cargill / Heinz | Chevrolet Corvette C3 | Mancuso Chevrolet | 2:05.7690 | |
| 24th | 65 | Carradine / Morton / Woods | Ferrari 365 GTB/4 | Ramsey Ferrari/Modena | 2:06.0030 | |
| 25th | 72 | Arnold / Thompson / Hagan | Chevrolet Corvette | Bill Arnold Racing | 2:07.5790 | |
| 26th | 9 | Bytzek / Bytzek / Bartling | Porsche Carrera RSR | Bytzek Automotive Design | 2:08.6820 | |
| 27th | 79 | Callas / Jolly / Laffeach / Papke | Porsche 911 Carrera RSR 3.0 | Michael Callas | 2:09.3410 | |
| 28th | 80 | Solomone / Lang / *Fyhrie | Chevrolet Camaro | Carmon Solomone | 2:10.0290 | |
| 29th | 66 | Adamowicz / Cannon / Barbour | Ferrari 365 GTB/4 | Ramsey Ferrari/Modena | 2:10.3060 | |
| 30th | 70 | Gang / Gonzalez / Duke / *Papke | Porsche Carrera RSR | Michael Callas | 2:10.7150 | |
| 31st | 42 | Hindson / Carney / Davenport | Porsche 911 S | Bob Hindson Racing | 2:11.2080 | |
| 32nd | 46 | DeNarvaez / Naon / Freyre | Porsche 911 Carrera RSR | Mauricio de Narvaez | 2:12.0310 | |
| 33rd | 10 | Speer / Turley / Sahlman | Porsche 911 S | M. L. Speer | 2:12.2940 | |
| 34th | 48 | Sereix / Carusso / Donaldson | Chevrolet Corvette | Autodyne | 2:12.3590 | |
| 35th | 38 | Paul / O'Steen / Hagestad | Porsche Carrera RSR | John Paul | 2:12.4560 | |
| 38th | 51 | Kirby / Hotchkis / *Aase | Porsche 914/6 | Kirby Hitchcock Racing | 2:13.6660 | |
| 36th | 60 | Bond / Tilton / Thomas | Porsche 911 S | R & R Racing | 2:13.9000 | |
| 37th | 07 | Mendez / Cowart / Panaccione | Porsche 911 T | Charles Mendez | 2:13.9180 | |
| 39th | 39 | Doran / Barnett / Pelz | Chevrolet Corvette | Wiley Doran | 2:15.3650 | |
| 40th | 71 | Higgins / Mead / White | Porsche 911 | The Foreign Exchange | 2:18.0410 | |
| 41st | 28 | Weiss / Alsup / Gage | Porsche 911 S | Weiss Motor Racing | 2:19.2230 | |
| 42nd | 01 | Bergstrom / *Cook | Porsche 911 S | Sports Ltd. Racing | 2:19.3350 | |
| 43rd | 34 | Drolsom / Scott / Bagley | Porsche 911 S | Drolsom Racing | 2:21.8180 | |
| 44th | 02 | Levenson / Rice / Levetto | Chevrolet Corvette | Al Levenson | 2:22.5790 | |
| 45th | 18 | Swanson / Wolters | Chevrolet Camaro | Terry Wolters | 2:22.5820 | |
| 46th | 33 | Dube / Zitza / Castellano | Porsche 911 | Ara Dube | 2:23.0330 | |
| 47th | 84 | Boykin / Henderson / *Canada | Chevrolet Camaro | Lenton B. McGill | 2:23.1740 | |
| 48th | 49 | Fillingham / Williamson / Jones | Chevrolet Corvette | Fillingham Racing | no time | |
| 49th | 73 | Howey / Crabtree / Koch | Chevrolet Corvette C2 | Howey Farms | no time | |
| 50th | 6 | Johnson / Shaw / Anderson | AMC Gremlin | Levi's Team Highball | no time | |
| 51st | 27 | Mummery / Refenning / Noseda | Porsche 911 S | SVD Automotive | no time | |
| 52nd | 50 | Waugh / Rulon-Miller / Punch | AMC Hornet | Tom Waugh | no time | |
| 53rd | 13 | Fryer / Bostyan / Lowther | AMC Javelin | University of Pittsburgh | no time | |
| 54th | 7 | Arutunoff / Marina / Goellnicht | Lancia Stratos | Hallet Motor Racing Circuit | no time | |
| 55th | 03 | Beilcke / *Gebhardt | BMW 2002 | Bavarian Motors | no time | |
| 56th | 98 | Tolman / *Brockman / *Sommers | Lotus Europa | Ralph Tolman | no time | |
| 57th | 36 | Boye / Gillan | AMC Gremlin | Bill Boye | no time | |
| 58th | 17 | Gimondo / *Chitwood | Chevrolet Nova | Tim Chitwood | no time | |
| 59th | 40 | Sepelon / Lee / Parker | Ford Mustang | Robert V. LeMay | no time | |