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