| 1st | 75 | Greenwood / Muzzin / Shafer | Chevrolet Corvette C3 | John Greenwood | 1:55.223 | 1:55.2230 |
| 2nd | 25 | Peterson / *Redman | BMW 3.0 CSL | BMW of America | 1:56.710 | 1:56.7100 |
| 3rd | 24 | Posey / Stuck | BMW 3.0 CSL | BMW of America | 1:57.205 | 1:57.2050 |
| 4th | 88 | Carter / Felton | Chevrolet Camaro II | Carter Racing Services | 1:58.089 | 1:58.0890 |
| 5th | 14 | Holbert / Forbes-Robinson | Porsche 911 Carrera RSR 3.0 | Porsche-Audi USA | 1:58.483 | 1:58.4830 |
| 6th | 9 | Bolanos / Heyer / Jourdain | Porsche Carrera RSR 3.0 | Juan Carlos Bolanos | 1:58.952 | 1:58.9520 |
| 7th | 5 | Rojas / Rebaque / van Beuren, Jr. | Porsche 911 Carrera RSR 3.0 | Hector Rebaque | 1:59.030 | 1:59.0300 |
| 8th | 59 | Gregg / Haywood | Porsche 911 Carrera RSR 3.0 | Brumos Porsche | 1:59.030 | 1:59.0300 |
| 9th | 18 | Thompson / Bach / Yenko | Chevrolet Corvette C3 | Jerry Thompson | 2:00.035 | 2:00.0350 |
| 10th | 43 | O'Steen / Helmick / Graves | Porsche Carrera RSR | Escar | 2:00.097 | 2:00.0970 |
| 11th | 23 | Kemp / Baird | Porsche 911 Carrera RSR 3.0 | Armor All | 2:00.365 | 2:00.3650 |
| 12th | 30 | Bienvenue / Dyer | Porsche 911 Carrera RSR 3.0 | George Dyer | 2:00.500 | 2:00.5000 |
| 13th | 15 | Garcia / Garcia | Chevrolet Corvette C3 | Garcia Racing | 2:00.856 | 2:00.8560 |
| 14th | 27 | Ward / Henny / Barnett | Chevrolet Camaro II | Jon Ward | 2:02.923 | 2:02.9230 |
| 15th | 87 | DeLorenzo / Brown / Carter | Chevrolet Camaro II | Carter Racing Services | 2:03.528 | 2:03.5280 |
| 16th | 11 | Keyser / Sprowls / Contreras | Porsche 911 Carrera RSR 3.0 | Toad Hall | 2:04.016 | 2:04.0160 |
| 17th | 41 | Jones, Jr. / Currin / Faul | Chevrolet Camaro II | Herb Jones, Jr. | 2:04.050 | 2:04.0500 |
| 18th | 1 | Ballot-Léna / *Cudini / *Minter | Ferrari 365 GT4/BB | North American Racing Team | 2:04.526 | 2:04.5260 |
| 19th | 69 | Coleman / Johnson | Chevrolet Vega | Coleman/Johnson | 2:05.293 | 2:05.2930 |
| 20th | 4 | Webbe / Dickinson / Theodoracopulos | Porsche 911 Carrera RSR 3.0 | Bill Webbe | 2:05.917 | 2:05.9170 |
| 21st | 42 | Carusso / Vreeland / *Sereix | Chevrolet Corvette C3 | John Carusso | 2:06.170 | 2:06.1700 |
| 22nd | 71 | Woodner / Phillips | Ferrari 365 GTB/4 | North American Racing Team | 2:06.307 | 2:06.3070 |
| 23rd | 67 | McClain / White / *Harmstad | Porsche 911 Carrera RSR | David McClain | 2:07.594 | 2:07.5940 |
| 24th | 0 | Minter / Ballot-Léna / Gagliardi | Ferrari 365 GTB/4 | North American Racing Team | 2:09.123 | 2:09.1230 |
| 25th | 13 | Townsend / Thomas / Papke | Porsche Carrera RSR | Randolph Townsend | 2:09.490 | 2:09.4900 |
| 26th | 17 | Gimondo / Heinz / Everett | Chevrolet Camaro II | Takondo Racing | 2:11.075 | 2:11.0750 |
| 27th | 110 | Nehl / Moise | Chevrolet Camaro II | Automotive Engineering | 2:11.206 | 2:11.2060 |
| 28th | 95 | de Izaurieta / Tabe / Martinez | Porsche Carrera | Hector Rebaque | 2:11.395 | 2:11.3950 |
| 29th | 34 | Drolsom / Nagel | Porsche 911 S | George Drolsom | 2:12.464 | 2:12.4640 |
| 30th | 51 | Jones / Kirby / Hotchkis | Porsche 914/6 | Johnson-Bozzoni Porsche-Audi | 2:12.946 | 2:12.9460 |
| 31st | 32 | Mroz / Mroz | Ford Mustang | Roaring Moose | 2:13.100 | 2:13.1000 |
| 32nd | 60 | Bond / Rollin / Belperche | Porsche 911 S | Rusty Bond | 2:13.324 | 2:13.3240 |
| 33rd | 89 | Parish / Countryman / Secher | Porsche 911 S | Barrick Motor Racing | 2:14.090 | 2:14.0900 |
| 34th | 92 | Tillson / Oest | Porsche Carrera RSR | Oest/Tillson | 2:14.382 | 2:14.3820 |
| 35th | 64 | Canada / Boykin / Levetto | Chevrolet Camaro I | Russ Boykin | 2:15.715 | 2:15.7150 |
| 36th | 73 | Arnold / Biernerth | Chevrolet Corvette C2 | Bill Arnold | 2:16.648 | 2:16.6480 |
| 37th | 85 | Hulen / Coupland / Engels | Porsche 914/6 | John E. Hulen | 2:17.277 | 2:17.2770 |
| 38th | 16 | Spruell / Bean | Porsche 911 S | Bill Bean | 2:18.284 | 2:18.2840 |
| 39th | 45 | Ramirez / Mutiz / Montalvo / Alvarez | Porsche 911 S | Delta Racing | 2:18.979 | 2:18.9790 |
| 40th | 46 | Buzbee / Ross / Frates | Datsun 240Z | Spencer Buzbee | 2:21.508 | 2:21.5080 |
| 41st | 98 | Alspaugh / Persinger | Chevrolet Corvette C3 | James W. Persinger | 2:21.520 | 2:21.5200 |
| 42nd | 28 | Arutunoff / Goellnicht / Gebhardt | Lotus Europa | Anatoly Arutunoff | 2:21.779 | 2:21.7790 |
| 43rd | 90 | Walle / Reddy | Mazda RX-3 | Ray Walle | 2:21.846 | 2:21.8460 |
| 44th | 26 | Williamson / Cosentino / Gano | Chevrolet Camaro | Al Cosentino | 2:22.320 | 2:22.3200 |
| 45th | 84 | Selbert / Biggs | Porsche 911 S | Klaus Selbert | 2:23.395 | 2:23.3950 |
| 46th | 7 | Johnson / Coleman / Shaw | AMC Gremlin | Levi's Team Highball | 2:26.877 | 2:26.8770 |
| 47th | 83 | Mollin / Gatoff / Riley | Volvo 142 | Arthur Mollin | 2:29.271 | 2:29.2710 |
| 48th | 12 | Hughes / Whitaker / Geisel | Datsun 510 | Precision Performance | 2:31.981 | 2:31.9810 |
| 49th | 29 | Mabrito / Steel | Datsun 240Z | Bruce Mabrito | 2:32.051 | 2:32.0510 |