| 1st | 99 | Stommelen / Hezemans / Gregg | Porsche 935/77A | JMS Brumos Porsche | 1:51.845 | 2:03.0970 |
| 2nd | 7 | Heimrath / Bienvenue / Ridgely | Porsche 935 | Heimrath Racing | 1:55.403 | 1:55.4030 |
| 3rd | 09 | Belcher / Bundy / Holbert | Porsche 934/5 | Belcher Racing | 1:56.828 | 1:56.8280 |
| 4th | 19 | Cord / Adams | Chevrolet Monza | Chris Cord Racing | 1:59.100 | 1:59.1000 |
| 5th | 0 | Ongais / Field / Minter | Porsche 935/77A | Interscope Racing | 2:00.152 | 2:00.1520 |
| 6th | 12 | Wollek / Pescarolo / Jaunet | Porsche 935/77A | Porsche Kremer Racing | 2:00.398 | 2:00.3980 |
| 7th | 2 | Hobbs / Peterson | BMW 320i Turbo | McLaren North America | 2:00.578 | 2:00.5780 |
| 8th | 25 | Miller / Miller / *Koveleski | BMW 3.5 CSL | KWM Racing | 2:01.506 | 2:25.4390 |
| 9th | 33 | Fernandez / Paul / Currin | Porsche Carrera RSR | Boricua Racing | 2:01.956 | 2:01.9560 |
| 10th | 20 | Bostyan / Thompson / Yenko | Chevrolet Corvette | Richard Bostyan | 2:03.360 | 2:03.3600 |
| 11th | 65 | Morton / Adamowicz / Sahlman / Carradine | Ferrari 365 GTB/4 | Carradine/Dan Ward Racing | 2:04.021 | 2:04.0210 |
| 12th | 5 | Migault / Guitteny / Young | Ferrari 365 GT4/BB | Grand Competition Cars Inc. | 2:04.329 | 2:04.3290 |
| 13th | 3 | Finotto / Facetti | Porsche 935 | Jolly Club | 2:04.910 | 2:04.9100 |
| 14th | 32 | Earle / Akin / Knoop | Porsche 911 Carrera RSR | Earle/Akin Racing Associates Inc. | 2:05.491 | 2:05.4910 |
| 15th | 59 | Gregg / Ballot-Léna / Frisselle | Porsche 935 | JMS Brumos Porsche | 2:05.951 | 2:05.9510 |
| 16th | 24 | Frank / Bergstrom | Porsche Carrera RSR | Executive Industries | 2:05.969 | 2:05.9690 |
| 17th | 21 | Konrad / Jöst / Merl | Porsche 935 | Joest | 2:06.751 | 2:06.7510 |
| 18th | 6 | Barbour / Schurti / Rutherford | Porsche 935/77A | Dick Barbour Performance | 2:06.900 | 2:06.9000 |
| 19th | 73 | Howey / Koch / Crabtree | Chevrolet Camaro | Howey Farms | 2:06.961 | 2:06.9610 |
| 20th | 58 | Febles / Poole | Porsche 911 Carrera RSR 3.0 | Diego Febles Racing | 2:07.235 | 2:07.2350 |
| 21st | 72 | Thompson / Hagan / Schmidt | Chevrolet Corvette | Bill Arnold Racing | 2:07.271 | 2:07.2710 |
| 22nd | 56 | Valentine / Carter / Edwards | Chevrolet Camaro | Carter Bros. Racing | 2:07.477 | 2:07.4770 |
| 23rd | 82 | Solomone / Lang / Fyhrie | Chevrolet Camaro | Carm Solomone | 2:07.497 | 2:07.4970 |
| 24th | 01 | White / Mesnick / Roehrig | Porsche 911 S | Roehrig Racing | 2:07.810 | 2:07.8390 |
| 25th | 86 | Guthrie / Kleinpeter / Stevens | De Tomaso Pantera GT4K | Team Pantera FL | 2:07.815 | 2:07.8150 |
| 26th | 48 | Carusso / Donaldson / Sereix | Chevrolet Corvette | Autodyne | 2:08.198 | 2:08.1980 |
| 27th | 52 | Katayama / Terada / Mandeville | Mazda RX-3 | Mazda Auto Tokyo Co. Ltd. | 2:08.779 | 2:08.7790 |
| 28th | 38 | McDill / Meldeau | Chevrolet Camaro | Meldeau Tire Co. | 2:08.893 | 2:08.8930 |
| 29th | 80 | Adams / Bedard / Thomson | Oldsmobile Cutlass | Herb Adams | 2:08.911 | 2:08.9110 |
| 30th | 94 | Henn / Sahlman / Satullo | Ferrari 365 GTB/4 | Swap Shops | 2:08.911 | 2:08.9110 |
| 31st | 4 | Mallet / Bondurant / Romolotti / *Camathias | Ferrari 308 GTB | Jolly Club | 2:08.936 | 2:08.9360 |
| 32nd | 8 | Besenzoni / Dal Ben / Wever | Ferrari 308 GTB | Jolly Club | 2:09.180 | 2:09.1800 |
| 33rd | 60 | Thomas / Tilton / Bond | Porsche 911 | R&R Racing | 2:09.410 | 2:09.4100 |
| 34th | 29 | Weiss / Alsup / Follmer | Porsche 911 S | Richard C. Weiss Racing Ent. | 2:09.947 | 2:09.9470 |
| 35th | 46 | DeNarvaez / Naon / Garcia | Porsche 911 Carrera RSR | Mauricio DeNarvaez | 2:10.725 | 2:10.7250 |
| 36th | 13 | Shaw, Jr. / Busby / Meister | Porsche 935 | Bankrupt Inc Racing | 2:10.939 | 2:10.9390 |
| 37th | 71 | Romero / Soto / Beloff | Porsche 911 S | Bill Scott Racing | 2:11.711 | 2:11.7110 |
| 38th | 54 | Tunstall / Behr / Timolat | Porsche Carrera RSR | T&C/Big Apple Racing | 2:11.732 | 2:11.7320 |
| 39th | 76 | Thomas / Mueller / Blackburn | Porsche 911 | Quality Inn of Boise, ID | 2:12.306 | 2:12.3060 |
| 40th | 14 | Brambring / Schornstein / "Winter" | Porsche 935 K2 | Kremer Porsche Racing | 2:13.972 | 2:13.9720 |
| 41st | 17 | Fillingham / Chitwood / Jones | Chevrolet Nova | Tim Chitwood | 2:14.237 | 2:14.2370 |
| 42nd | 77 | Johnson / Shaw / Woodward | AMC Hornet AMX | Levi's Team Highball | 2:14.409 | 2:14.4090 |
| 43rd | 53 | Downing / Fisher / Bohren / Mandeville | Mazda RX-3 | Mazda Auto Tokyo Co. Ltd. | 2:14.599 | 2:14.5990 |
| 44th | 02 | Neland / Levenson / Brown | Chevrolet Corvette | Al Levenson | 2:14.709 | 2:14.7090 |
| 45th | 61 | Akaike / Cosentino | Mazda RX-3 | Faza Squadra | 2:14.783 | 2:14.7830 |
| 46th | 37 | Buchler / Johnson / Young | Chevrolet Camaro | Clay Young | 2:15.515 | 2:15.5150 |
| 47th | 36 | Case / Panaccione | Porsche 911 | Case Racing | 2:15.534 | 2:15.5340 |
| 48th | 85 | Hulen / Coupland / Engels | Porsche 914/6 | John E. Hulen | 2:16.363 | 2:16.3630 |
| 49th | 15 | Beilcke / Grinbold / Gebhardt | BMW 3.0 CSL | Bavarian Motors Inc. | 2:16.393 | 2:16.3930 |
| 50th | 22 | Harriss / Bruckmann | Porsche 911 E | Music City P&A | 2:16.468 | 2:16.4680 |
| 51st | 18 | Gauthier / Swanson / West | Chevrolet Camaro | Ours & Hours Racing | 2:16.674 | 2:16.6740 |
| 52nd | 05 | Bond / Kreider / Dann | Chevrolet Monza | Dale Kreider Racing | 2:17.172 | 2:17.1720 |
| 53rd | 78 | Hillin / Henderson / Turner | Ferrari 365 GTB/4 | Western Motor Works | 2:17.357 | 2:17.3570 |
| 54th | 9 | Goellnicht / Marina / May / Arutunoff | Lancia Stratos | Automobiles International | 2:17.492 | 2:17.4920 |
| 55th | 27 | Honegger / Scott / Hutchins / *Dean | Mazda RX-3 | Z&W Enterprises | 2:17.649 | 2:17.6490 |
| 56th | 08 | Wolters / Refenning / Mummery | Porsche 911 S | Terry Wolters | 2:17.995 | 2:17.9950 |
| 57th | 66 | Devendorf / Adamowicz / Kline | Ferrari 365 GTB/4 | Carradine/Dan Ward Racing | 2:18.132 | 2:18.1320 |
| 58th | 84 | Doyle / Maffucci / Speakman | Datsun 260Z | World Parts | 2:18.414 | 2:18.4140 |
| 59th | 34 | Drolsom / Davenport / Greb | Porsche 911 S | Drolsom Racing Inc. | 2:18.426 | 2:18.4260 |
| 60th | 55 | Rodriguez / Cruz | Lotus Europa Ford | Emiliano Rodriguez | 2:18.883 | 2:18.8830 |
| 61st | 39 | Pickett / Bonnet / Canepa | Porsche Carrera RSR | Pickett Racing | 2:22.975 | 2:22.9750 |
| 62nd | 10 | Church / Kump / Lee | AMC AMX | Bob's Speed Products | 2:23.999 | 2:23.9990 |
| 63rd | 51 | Hotchkis / Kirby / Aase | Porsche 911 | Wynn's International | 2:24.850 | 2:24.8500 |
| 64th | 91 | Bondurant / Cook / Southern | Datsun 260Z | Bondurant School | 2:25.662 | 2:25.6620 |
| 65th | 68 | Mendez / Gonzalez / Ferrer | Porsche 911 Carrera RSR 3.0 | Luis Mendez | 2:26.013 | 2:26.0130 |
| 66th | 88 | Hamilton / Wade / Hinze | Porsche 911 | Hamilton House Racing | 2:37.662 | 2:37.6620 |
| 67th | 50 | Kleinschmidt / Culpepper | MGB GT | Native Tan | 2:41.167 | 2:41.1670 |
| 68th | 87 | Vazquez / Oyler / Hamilton / Hamilton / Seipolt | Porsche 911 | Pedro Vazquez | 2:58.980 | 2:58.9800 |