| 1st | 75 | Greenwood / Muzzin / Shafer | Chevrolet Corvette C3 | John Greenwood | 1:55.2230 | 191.5747 |
| 2nd | 25 | Peterson / *Redman | BMW 3.0 CSL | BMW of America | 1:56.7100 | |
| 3rd | 24 | Posey / Stuck | BMW 3.0 CSL | BMW of America | 1:57.2050 | |
| 4th | 88 | Carter / Felton | Chevrolet Camaro II | Carter Racing Services | 1:58.0890 | |
| 5th | 14 | Holbert / Forbes-Robinson | Porsche 911 Carrera RSR 3.0 | Porsche-Audi USA | 1:58.4830 | |
| 6th | 9 | Bolanos / Heyer / Jourdain | Porsche Carrera RSR 3.0 | Juan Carlos Bolanos | 1:58.9520 | |
| 7th | 59 | Gregg / Haywood | Porsche 911 Carrera RSR 3.0 | Brumos Porsche | 1:59.0300 | |
| 8th | 5 | Rojas / Rebaque / van Beuren, Jr. | Porsche 911 Carrera RSR 3.0 | Hector Rebaque | 1:59.0300 | |
| 9th | 18 | Thompson / Bach / Yenko | Chevrolet Corvette C3 | Jerry Thompson | 2:00.0350 | |
| 10th | 43 | O'Steen / Helmick / Graves | Porsche Carrera RSR | Escar | 2:00.0970 | |
| 11th | 23 | Kemp / Baird | Porsche 911 Carrera RSR 3.0 | Armor All | 2:00.3650 | |
| 12th | 30 | Bienvenue / Dyer | Porsche 911 Carrera RSR 3.0 | George Dyer | 2:00.5000 | |
| 13th | 15 | Garcia / Garcia | Chevrolet Corvette C3 | Garcia Racing | 2:00.8560 | |
| 14th | 27 | Ward / Henny / Barnett | Chevrolet Camaro II | Jon Ward | 2:02.9230 | |
| 15th | 87 | DeLorenzo / Brown / Carter | Chevrolet Camaro II | Carter Racing Services | 2:03.5280 | |
| 16th | 11 | Keyser / Sprowls / Contreras | Porsche 911 Carrera RSR 3.0 | Toad Hall | 2:04.0160 | |
| 17th | 41 | Jones, Jr. / Currin / Faul | Chevrolet Camaro II | Herb Jones, Jr. | 2:04.0500 | |
| 18th | 1 | Ballot-Léna / *Cudini / *Minter | Ferrari 365 GT4/BB | North American Racing Team | 2:04.5260 | |
| 19th | 69 | Coleman / Johnson | Chevrolet Vega | Coleman/Johnson | 2:05.2930 | |
| 20th | 4 | Webbe / Dickinson / Theodoracopulos | Porsche 911 Carrera RSR 3.0 | Bill Webbe | 2:05.9170 | |
| 21st | 42 | Carusso / Vreeland / *Sereix | Chevrolet Corvette C3 | John Carusso | 2:06.1700 | |
| 22nd | 71 | Woodner / Phillips | Ferrari 365 GTB/4 | North American Racing Team | 2:06.3070 | |
| 23rd | 67 | McClain / White / *Harmstad | Porsche 911 Carrera RSR | David McClain | 2:07.5940 | |
| 24th | 0 | Minter / Ballot-Léna / Gagliardi | Ferrari 365 GTB/4 | North American Racing Team | 2:09.1230 | |
| 25th | 13 | Townsend / Thomas / Papke | Porsche Carrera RSR | Randolph Townsend | 2:09.4900 | |
| 26th | 17 | Gimondo / Heinz / Everett | Chevrolet Camaro II | Takondo Racing | 2:11.0750 | |
| 27th | 110 | Nehl / Moise | Chevrolet Camaro II | Automotive Engineering | 2:11.2060 | |
| 28th | 95 | de Izaurieta / Tabe / Martinez | Porsche Carrera | Hector Rebaque | 2:11.3950 | |
| 29th | 34 | Drolsom / Nagel | Porsche 911 S | George Drolsom | 2:12.4640 | |
| 30th | 51 | Jones / Kirby / Hotchkis | Porsche 914/6 | Johnson-Bozzoni Porsche-Audi | 2:12.9460 | |
| 31st | 32 | Mroz / Mroz | Ford Mustang | Roaring Moose | 2:13.1000 | |
| 32nd | 60 | Bond / Rollin / Belperche | Porsche 911 S | Rusty Bond | 2:13.3240 | |
| 33rd | 89 | Parish / Countryman / Secher | Porsche 911 S | Barrick Motor Racing | 2:14.0900 | |
| 34th | 92 | Tillson / Oest | Porsche Carrera RSR | Oest/Tillson | 2:14.3820 | |
| 35th | 64 | Canada / Boykin / Levetto | Chevrolet Camaro I | Russ Boykin | 2:15.7150 | |
| 36th | 73 | Arnold / Biernerth | Chevrolet Corvette C2 | Bill Arnold | 2:16.6480 | |
| 37th | 85 | Hulen / Coupland / Engels | Porsche 914/6 | John E. Hulen | 2:17.2770 | |
| 38th | 16 | Spruell / Bean | Porsche 911 S | Bill Bean | 2:18.2840 | |
| 39th | 45 | Ramirez / Mutiz / Montalvo / Alvarez | Porsche 911 S | Delta Racing | 2:18.9790 | |
| 40th | 46 | Buzbee / Ross / Frates | Datsun 240Z | Spencer Buzbee | 2:21.5080 | |
| 41st | 98 | Alspaugh / Persinger | Chevrolet Corvette C3 | James W. Persinger | 2:21.5200 | |
| 42nd | 28 | Arutunoff / Goellnicht / Gebhardt | Lotus Europa | Anatoly Arutunoff | 2:21.7790 | |
| 43rd | 90 | Walle / Reddy | Mazda RX-3 | Ray Walle | 2:21.8460 | |
| 44th | 26 | Williamson / Cosentino / Gano | Chevrolet Camaro | Al Cosentino | 2:22.3200 | |
| 45th | 84 | Selbert / Biggs | Porsche 911 S | Klaus Selbert | 2:23.3950 | |
| 46th | 7 | Johnson / Coleman / Shaw | AMC Gremlin | Levi's Team Highball | 2:26.8770 | |
| 47th | 83 | Mollin / Gatoff / Riley | Volvo 142 | Arthur Mollin | 2:29.2710 | |
| 48th | 12 | Hughes / Whitaker / Geisel | Datsun 510 | Precision Performance | 2:31.9810 | |
| 49th | 29 | Mabrito / Steel | Datsun 240Z | Bruce Mabrito | 2:32.0510 | |
| 50th | 44 | Freyre / Naon / Garcia | Porsche 911 S | Delta Racing | no time | |
| 51st | 72 | Jimenez / *Zambrano / *Lambreton | Mazda RX-2 | Cafe Mexicana Racing | no time | |
| 52nd | 00 | Corwin / Mull | Chevrolet Camaro | Jim Corwin | no time | |
| 53rd | 20 | John Morton | Ferrari 365 GTB/4 | Francisco Mir | no time | |
| 54th | 32 | Greger / Sindel / Schmid | Porsche Carrera | Sepp Greger | no time | |
| 55th | 52 | Punch / Rulon-Miller / Waugh | Porsche 911 S | Doell Enterprises | no time | |
| 57th | 55 | Lee Cutler | Porsche 914/6 | Cutler/Pickens | no time | |
| 58th | 56 | Jones / Mignot / Grandet | Ferrari 365 GTB/4 | North American Racing Team? | no time | |