| 1st | 76 | Greenwood / Brockman | Chevrolet Corvette C3 | Levitt Racing/Spirit of Sebring | 2:47.9370 | 179.3936 |
| 2nd | 59 | Gregg / Haywood | BMW 3.0 CSL | BMW Motorsport North America | 2:50.6010 | |
| 3rd | 14 | Holbert / Keyser | Porsche Carrera RSR | G. W. Dickinson/Holbert Porsche-Audi | 2:54.2920 | |
| 4th | 15 | Garcia / Garcia | Chevrolet Corvette | Garcia Brothers Racing | 2:55.6530 | |
| 5th | 11 | Gunn / Baird | Porsche 911 Carrera RSR 3.0 | Dallas Heyser/SL-1 | 2:56.9740 | |
| 6th | 61 | Busby / Shafer | Porsche Carrera RSR | Brumos Porsche-Audi | 2:57.6960 | |
| 7th | 19 | Thompson / Bostyan / Yenko | Chevrolet Corvette C3 | Richard Bostyan | 2:57.9410 | |
| 8th | 05 | Trueman / Rahal | Chevrolet Monza | Red Roof Inns/Jim Trueman | 2:58.7350 | |
| 9th | 24 | Hobbs / Parsons | BMW 3.0 CSL | BMW Motorsport North America | 2:59.3070 | |
| 10th | 56 | Hagestad / Jolly | Porsche 911 Carrera RSR | Spirit of Colorado/Hagestad Porsche | 2:59.6880 | |
| 11th | 66 | Behr / Guthrie | Chevrolet Monza | Big Apple Racing/Champale | 3:00.2200 | |
| 12th | 43 | O'Steen / Helmick | Porsche Carrera RSR | Ecurie Escargot | 3:00.3530 | |
| 13th | 2 | Theodoracopulos / Jourdain | Chevrolet Monza | Harry Theodoracopulos | 3:01.2750 | |
| 14th | 30 | Quintanilla / Gonzalez | Porsche Carrera RSR | John McClelland | 3:02.0260 | |
| 15th | 06 | Chitwood / Gimondo | Chevrolet Camaro | Chitwood Racing | 3:03.2400 | |
| 16th | 58 | Febles / Cruz | Porsche 911 Carrera RSR 3.0 | Diego Febles Racing | 3:03.5290 | |
| 17th | 91 | Bolanos / Sprowls / Lopez Negrete | Porsche Carrera RSR | Adams Apple | 3:03.6760 | |
| 18th | 44 | DeNarvaez / Naon / Freyre | Porsche 911 Carrera RSR | Mauricio DeNarvaez | 3:05.2350 | |
| 19th | 86 | Kleinpeter / Goldleaf | De Tomaso Pantera | Hugh Kleinpeter | 3:08.2160 | |
| 20th | 67 | White / McClain | Porsche 911 S | Havatampa Cigar | 3:08.3290 | |
| 21st | 71 | Noseda / *Small | Chevrolet Camaro | Ralph Noseda | 3:08.5190 | |
| 22nd | 39 | Doran / Belcher | Chevrolet Corvette | Wiley Doran | 3:09.1210 | |
| 23rd | 68 | Meldeau / McDill | Chevrolet Camaro | Mike Meldeau | 3:09.8670 | |
| 24th | 40 | Sherk / Shulnburg / *Donaldson | Chevrolet Corvette | R. V. Shulnberg | 3:10.3500 | |
| 25th | 41 | Jones, Jr. / Faul | Chevrolet Camaro | Jones Industries Racing | 3:10.5000 | |
| 26th | 87 | Thomas / Cook | Porsche 914/6 | R. Mandella | 3:10.7190 | |
| 27th | 60 | Bond / Tilton | Porsche 911 S | Rusty Bond | 3:11.2150 | |
| 28th | 31 | Montalvo / Grob | Ford Escort | Juan Montalvo | 3:11.7030 | |
| 29th | 26 | Gonzalez / Fernandez / Ramirez | Lotus Elan | Bonky Fernandez | 3:12.2460 | |
| 30th | 21 | Stone / Gillingham / Fine | Shelby GT350 | Richard Stone | 3:14.3250 | |
| 31st | 42 | Hindson / Carney / Davenport | Porsche 911 S | Bob Hindson Racing | 3:15.2950 | |
| 32nd | 7 | Gray / Keller | Chevrolet Corvette | Team Sebring Racing | 3:16.1950 | |
| 33rd | 9 | Ansley / *Connelly | Chevrolet Corvette | Tony Ansley | 3:16.5070 | |
| 34th | 07 | Mendez / Cowart / *Panaccione | Porsche 911 T | Charles Mendez Jr. | 3:16.7710 | |
| 35th | 92 | Oest / Tillson | Porsche Carrera RSR | Oest-Tillson Racing | 3:17.2040 | |
| 36th | 77 | Jennings / Beasley | Porsche 911 S | Bruce Jennings | 3:17.5610 | |
| 37th | 22 | Lilly / Marrs | Lotus Europa | Tony Lilly | 3:17.6180 | |
| 38th | 72 | Arnold / Thompson | Chevrolet Corvette | Bill Arnold | 3:17.6680 | |
| 39th | 12 | Smith / Aiken | Chevrolet Camaro | Paul Bowden Racing | 3:17.7560 | |
| 40th | 18 | Wolters / Miller / Castellano | Chevrolet Camaro | Terry Wolters | 3:17.7750 | |
| 41st | 5 | Gage / Emig / Velasquez, Jr. | Porsche 911 S | Richard Weiss | 3:20.9950 | |
| 42nd | 47 | Johnson / Young / Felton | Chevrolet Camaro | Clay Young | 3:21.1150 | |
| 43rd | 50 | Hochreuter / Goebbels / Berner | Porsche 911 S | Motex Auto | 3:21.7830 | |
| 44th | 01 | Frates / *Ross / *Buzbee | Datsun 240Z | William Frates | 3:22.8680 | |
| 45th | 45 | Moran / Fine / "Jamsal" | Porsche 911 S | Carlos Moran | 3:23.1950 | |
| 46th | 27 | Mummery / Refenning / Van Arsdale | Porsche 911 S | Jack Refenning | 3:24.2170 | |
| 47th | 33 | Stefl / *Carusso | Chevrolet Corvette | John Carusso | 3:24.3770 | |
| 48th | 36 | Almeida / Romero | Chevrolet Camaro | Motorcito Racing | 3:24.6900 | |
| 49th | 29 | Wamsley / Thomas | Chevrolet Corvette | Hoyt Overbagh | 3:25.0750 | |
| 50th | 78 | Sereix / Gonzalez / Robayna | Chevrolet Camaro | Ignacio Gonzalez | 3:25.7200 | |
| 51st | 51 | Kirby / Hotchkis / Jones | Porsche 914/6 | Max Dial Porsche-Audi | 3:26.5310 | |
| 52nd | 96 | Williamson / Pleasants / Gano | Chevrolet Camaro | Mike Williamson | 3:26.6470 | |
| 53rd | 17 | Bowles / *Rose | Porsche 911 S | Aubrey Bowles | 3:28.9340 | |
| 54th | 64 | Craw / Morton / Peacock | BMW 2002 | Miller & Norburn | 3:29.6320 | |
| 55th | 82 | Ross / Weber | Ford Mustang | Tom Ross | 3:29.8160 | |
| 56th | 97 | Alspaugh / McVey | Chevrolet Corvette | Jim Alspaugh | 3:29.9400 | |
| 57th | 02 | Scott / Minter | VW Scirocco | Bill Scott | 3:31.8180 | |
| 58th | 81 | Smith / Herman | Chevrolet Corvette | Dave Smith | 3:33.6250 | |
| 59th | 49 | Potter / Boyer | Ford Mustang | Neil Potter | 3:33.8390 | |
| 60th | 04 | Kreider / Bond | Pontiac Astre | Bill Nelson | 3:34.2280 | |
| 61st | 99 | Shafer / Crookston / Scott | Datsun 240Z | George Shafer | 3:35.4100 | |
| 62nd | 08 | Oyler / Braun / Church | Renault R12 | Stiles Construction | 3:41.1660 | |
| 63rd | 63 | Mendez / *Canahuate / *Rodriguez | BMW 2002 | Luis Mendez | 3:43.9450 | |
| 64th | 75 | Grenier / *Quigley / *Ragland | Mazda RX-2 | Skip Grenier | 3:46.4330 | |
| 65th | 3 | Hartman / Domiteaux / Flores / Turner | Austin Marina | Bart Hartman | 3:47.5720 | |
| 66th | 4 | Bergstrom / Shaw / Palmer | Honda Civic | C.A.C.I. | 3:56.1370 | |
| 67th | 90 | Reddy / Davey | Mazda Cosmo | Ray Walle Mazda | 3:59.4460 | |
| 68th | 55 | Kleinschmidt / Andrus | MGB GT | Charles Kleinschmidt | 4:09.5400 | |
| 69th | 38 | Spruell / Johnston / Petersen | Alfa Romeo Alfetta | Paul Spruell | 4:12.4240 | |
| 70th | 03 | Gebhardt / Grinbold / Beilcke | BMW 2002 | Bavarian Motors | 18:10.5420 | |
| 71st | 8 | Arutunoff / Marina / May | Lotus Europa | Automobiles International | no time | |
| 72nd | 34 | Drolsom / Nagel | Porsche 911 S | George Drolsom | no time | |
| 73rd | 46 | Quintana / Mendez / Valhuerdi | Shelby GT350 | Ahmed Valhuerdi | no time | |
| 74th | 52 | Tunstall / Wade / *Jenkins | Porsche Carrera RSR | Starbrite | no time | |
| 75th | 73 | Crabtree / Howey | Chevrolet Corvette | Howey Farms | no time | |
| 76th | 79 | Nooe / *Gahn | Shelby GT350 | Don Nooe | no time | |
| 77th | 54 | Sahlman / Southard / Job | Porsche 914/6 | Spirit Racing | no time | |