| 1st | 2 | Pescarolo / Larrousse / *Beltoise | Matra-Simca MS670C | Equipe Matra | 1:43.698 | 1:43.6980 |
| 2nd | 1 | Jarier / Beltoise | Matra-Simca MS670C | Equipe Matra | 1:43.893 | 1:43.8930 |
| 3rd | 60 | Merzario / Andretti | Alfa Romeo T33/TT/12 | Autodelta | 1:44.148 | 1:44.1480 |
| 4th | 70 | Stommelen / Andretti | Alfa Romeo T33/TT/12 | Autodelta | 1:45.791 | 1:45.7910 |
| 5th | 9 | Müller / van Lennep | Porsche 911 Carrera RSR Turbo | Martini Racing/Porsche System | 1:53.760 | 1:53.7600 |
| 6th | 16 | Aase / Patrick | Porsche 908/02 Flunder | Aase Brothers | 1:56.291 | 1:56.2910 |
| 7th | 59 | Gregg / Haywood | Porsche 911 Carrera RSR 3.0 | Brumos Porsche-Audi Corp. | 1:56.479 | 1:56.4790 |
| 8th | 14 | Holbert / Forbes-Robinson | Porsche 911 Carrera RSR 3.0 | Holbert's Porsche-Audi | 1:57.387 | 1:57.3870 |
| 9th | 13 | Agor / Nichter | Chevrolet Camaro II | Warren Agor Racing Enterprises | 1:57.747 | 1:57.7470 |
| 10th | 42 | Follmer / Lunger | BMW 3.0 CSL | Hurtig Team Libra | 1:59.630 | 1:59.6300 |
| 11th | 95 | Barber / Hagestad | Porsche 911 Carrera RSR 3.0 | Robert Hagestad | 2:00.314 | 2:00.3140 |
| 12th | 3 | Theodoracopulos / Kwech | Ford Capri RS 2600 | Harry Theodoracopulos | 2:00.345 | 2:00.3450 |
| 13th | 5 | Keyser / Minter | Porsche 911 Carrera RSR 3.0 | Toad Hall Motor Racing | 2:00.481 | 2:00.4810 |
| 14th | 99 | Fisher / Dupont | Chevron B23 Ford | Professional Racing Associates | 2:01.822 | 2:01.8220 |
| 15th | 24 | Buffum / Follmer / Lunger / *Petery | BMW 3.0 CSL | Hurtig Team Libra | 2:01.850 | 2:01.8500 |
| 16th | 74 | Heimrath / Cook | Porsche 911 Carrera RSR 3.0 | Heimrath Turbo, Inc. | 2:02.920 | 2:02.9200 |
| 17th | 36 | Miller / Miller | Chevrolet Camaro | Miller Brothers Racing Enterprises | 2:03.198 | 2:03.1980 |
| 18th | 34 | Posey / Hobbs / Forbes-Robinson | Porsche Carrera RSR | Ted Trudon Porsche - Audi, Inc. | 2:03.702 | 2:03.7020 |
| 19th | 65 | Bienvenue / Dancose | Porsche Carrera RSR | Jacques Bienvenue | 2:04.193 | 2:04.1930 |
| 20th | 82 | Garcia-Veiga / Waco / Monguzzi | Ferrari 365 GTB/4 | Francisco Mir Racing Team | 2:05.247 | 2:05.2470 |
| 21st | 110 | Mitchell / Nehl | Chevrolet Camaro | Bolus & Snopes, Ltd. | 2:05.551 | 2:05.5510 |
| 22nd | 88 | DeLorenzo / Carter | Chevrolet Camaro II | Mo Carter Firestone Performance Centre | 2:05.669 | 2:05.6690 |
| 23rd | 43 | O'Steen / Graves / Helmick | Porsche 911 Carrera RS | International Performance Center, Inc. | 2:06.141 | 2:06.1410 |
| 24th | 55 | Hiss / Cudini | Ferrari 365 GTB/4 | North American Racing Team | 2:07.963 | 2:07.9630 |
| 25th | 30 | Davidson / Witzenburg | Chevrolet Corvette C3 | Davidson Racing | 2:08.406 | 2:08.4060 |
| 26th | 91 | Pierce / Mills | Chevrolet Corvette C3 | Roger Pierce Racing | 2:08.440 | 2:08.4400 |
| 27th | 57 | Grossman / Young / Zeccoli | De Tomaso Pantera | F. J. Maka Racing | 2:09.061 | 2:09.0610 |
| 28th | 86 | Kleinpeter / Goldleaf | De Tomaso Pantera | Promotional Advertising Corp. | 2:09.116 | 2:09.1160 |
| 29th | 46 | Carter / Laughlin | Chevrolet Camaro II | Craig Carter Racing | 2:10.726 | 2:10.7260 |
| 30th | 92 | Oest / Tillson / Higgins | Porsche Carrera RSR | Oest-Tillson Racing | 2:11.995 | 2:11.9950 |
| 31st | 87 | Rynone / Wiernicki / Wiernicki | Chevrolet Corvette C3 | Rynone Industries | 2:12.079 | 2:12.0790 |
| 32nd | 64 | Bob Baechle | Chevrolet Corvette | C. Weaver Chevrolet | 2:13.145 | 2:13.1450 |
| 33rd | 39 | Gerre Payvis | Ford Mustang | Gerre Payvis | 2:14.189 | 2:14.1890 |
| 34th | 61 | Oleyar / Feinstein | Chevrolet Corvette | Feinstein Racing Enterprises | 2:32.022 | 2:32.0220 |
| 35th | 35 | McAlpine / Bagley | Datsun 510 | Louis McAlpine | 2:40.190 | 2:40.1900 |
| 36th | 44 | Jim Briody | Lotus Europa | International Performance Center, Inc. | 3:24.265 | 3:24.2650 |