| 1st | 11 | DeLorenzo / Durst / *Carter | Chevrolet Corvette 454 | Troy Promotions Inc. | 2:55.1300 | 172.0260 |
| 2nd | 5 | Heinz / Thompson / *English | Chevrolet Corvette | Race Enterprise & Developments | 2:58.0100 | |
| 3rd | 34 | Knupp / Tullius / *Murray | Chevrolet Corvette | Murray Racing Team | 2:59.4200 | |
| 4th | 59 | Gregg / Haywood / Helmick | Porsche Carrera RSR | Dr. Dave Helmick | 3:01.0800 | |
| 5th | 1 | Keyser / Minter | Porsche 911 Carrera RSR | Toad Hall Motor Racing | 3:01.5400 | |
| 6th | 94 | Pickett / Bean | Chevrolet Corvette | Leldon Blackwell | 3:02.4000 | |
| 7th | 81 | Egerton / Forbes-Robinson | Porsche 911 Carrera RSR 2.8 | Far West Racing | 3:02.4300 | |
| 8th | 48 | Greenwood / Yenko | Chevrolet Corvette | John Greenwood Racing | 3:03.1700 | |
| 9th | 50 | Grable / Greenwood / Brockman | Chevrolet Corvette C3 | John Greenwood Racing | 3:05.5200 | |
| 10th | 17 | Gimondo / Dingman | Chevrolet Camaro II | Vince Gimondo | 3:05.5800 | |
| 11th | 25 | Buffum / Everett | Ford Escort | Libra International Racing | 3:05.9600 | |
| 12th | 69 | Goldleaf / Tunstall | Chevrolet Corvette | WGB Niagara Wines | 3:06.4100 | |
| 13th | 62 | Stevens / Sherman / *Peters | Chevrolet Corvette | Jeff Stevens Racing | 3:06.6600 | |
| 14th | 49 | Greendyke / Johnson | Chevrolet Corvette C3 | John Greenwood Racing | 3:06.8900 | |
| 15th | 57 | Garcia / Almeida / *Buckley / *Febles | Ford Mustang | Garcia Racing | 3:06.9200 | |
| 16th | 8 | Felton / *Nehl | Chevrolet Camaro II | Automotive Engineering | 3:07.6100 | |
| 17th | 6 | Davidson / *Baechle | Chevrolet Corvette | Alex Davidson | 3:09.1100 | |
| 18th | 24 | Chitwood / Chitwood / Nagel | Chevrolet Camaro | T. C. Racing | 3:09.6000 | |
| 19th | 82 | Bergstrom / Cook | Porsche 911 S | Bob Bergstrom | 3:09.6700 | |
| 20th | 40 | Nell / Dagiel / Pirrotta | Chevrolet Corvette | Pironell Racing | 3:09.9600 | |
| 21st | 9 | Kessler / Fitzgerald | Chevrolet Camaro | Ray Kessler Inc. | 3:10.9300 | |
| 22nd | 37 | Moore / McCullough | Ford Mustang | Dan Moore | 3:10.9700 | |
| 23rd | 76 | Stone / Downs | Porsche 911 S | Silverstone Racing Team | 3:13.1200 | |
| 24th | 95 | Dickinson / Wachs / Pultz | Porsche 911 | G. W. Dickinson | 3:13.4800 | |
| 25th | 86 | Lynch / Milne | Porsche 911 ST | James Lynch | 3:13.6600 | |
| 26th | 47 | Keller / Gray / Potter | Chevrolet Corvette | Sebring Racing Inc. | 3:14.2600 | |
| 27th | 42 | Sereix / Lilly / Yoder | Chevrolet Camaro | Garcia Racing | 3:15.7500 | |
| 28th | 28 | Fleming / *Corwin | Chevrolet Camaro | Ed Fleming | 3:16.7300 | |
| 29th | 70 | Dancose / *Bienvenue | Porsche 911 ST | Marc Dancose | 3:17.0900 | |
| 30th | 19 | Rodriguez / McClure / *Clark | Chevrolet Camaro | U. S. Davis Racing | 3:17.2200 | |
| 31st | 83 | Gafford / Belperche / *Smith | Chevrolet Camaro | Houghton Smith | 3:17.3000 | |
| 32nd | 99 | Currin / Fortin / Johnson | Chevrolet Corvette | Phil Currin | 3:17.7600 | |
| 33rd | 46 | Bytzek / Bartling | Porsche 911 S | Bytzek Automotive | 3:18.3000 | |
| 34th | 87 | Miller / Henry | Ford Mustang | Miller/Hey | 3:18.5300 | |
| 35th | 97 | Ansley / Connelly / Avera | Chevrolet Corvette | Ansley Racing Enterprises | 3:18.8100 | |
| 36th | 77 | Jennings / Beasley | Porsche 911 S | Bruce Jennings | 3:18.9900 | |
| 37th | 29 | Noseda / Mummery / Small | Chevrolet Camaro | Ralph M. Noseda | 3:19.0400 | |
| 38th | 14 | Boykin / *Meldeau / *Canada | Chevrolet Camaro | C. C. Canada | 3:19.1200 | |
| 39th | 0 | Elliott / McDill | Chevrolet Camaro II | Byron Cook Racing | 3:19.2700 | |
| 40th | 67 | McClain / White / *Floyd | Porsche 914/6 | David H. McClain | 3:19.3300 | |
| 41st | 54 | Schumacher / Hay | Chevrolet Corvette | Iroquois Racing | 3:19.6700 | |
| 42nd | 71 | Christiansen / Myers / Tremblay | Chevrolet Camaro | Robert Christiansen | 3:19.7800 | |
| 43rd | 91 | Oest / Tillson / Bytzek | Porsche 911 S | Holbert's Porsche-Audi | 3:20.3700 | |
| 44th | 27 | Lindley / Behr / Goellnicht / *Peters | Porsche 911 S | Don Lindley | 3:21.9200 | |
| 45th | 61 | Chapman / McLaren / Hood | Chevrolet Corvette | Sebring Racing Inc. | 3:22.4800 | |
| 46th | 7 | Johnson / Young | Chevrolet Camaro | Eddie Johnson | 3:24.9700 | |
| 47th | 72 | Naon / Garcia / Freyre | Chevrolet Camaro | Alberto Naon | 3:27.0100 | |
| 48th | 80 | Stumpff / Vreeland / Pirie | Shelby GT500 | J. Kirby Stumpff | 3:27.1800 | |
| 49th | 4 | Lillquist / *Webbe / *Merrick | Porsche 911 S | Western Sizzlin' Steak Houses | 3:29.0700 | |
| 50th | 74 | Groleau / Ross / Shaw | Datsun 240Z | J. G. Racing | 3:29.7300 | |
| 51st | 44 | Garcia / *Vilarchao / *Nunez | Chevrolet Nova | Larrauri Racing | 3:30.0500 | |
| 52nd | 78 | Quintana / Almeida | Ford Mustang | Manuel Quintana | 3:30.3400 | |
| 53rd | 114 | Grob / Montalvo | BMW 2002 | Jim Grob Racing | 3:30.3900 | |
| 54th | 85 | Parish / Jones / Hulen | Porsche 914/6 | Donald Parish | 3:30.4800 | |
| 55th | 41 | Garcia / Shinn | Chevrolet Corvette | George Garcia Racing | 3:31.0600 | |
| 56th | 84 | Selbert / Glage | Porsche 911 S | Airport Motorsports | no time | |
| 57th | 89 | Parish / Causey / Taylor | Porsche 911 S | Thomas Barrick | no time | |
| 58th | 175 | Baldwin / Clark | Datsun 510 | U.S. Davis Racing | no time | |
| 59th | 26 | Cook / *Alexander / *Barrett | Chevrolet Nova | Wayne Alexander | | |
| 60th | 2 | Donley / Scott | MGB | Dean Donley | no time | |
| 61st | 90 | Walle / Schuck | Mazda RX-2 | Z & W Mazda | no time | |
| 62nd | 33 | Davis / Melville / Beatty | Alfa Romeo GTV | RaceCo of Coral Gables | no time | |
| 63rd | 75 | Kuenz / *Shelton | Porsche 912 | Tom Kuenz | no time | |
| 64th | 88 | Lapp / Meldeau | Datsun 240Z | Bob Lapp | no time | |
| 65th | 00 | Diggett / Johnson | AMC Gremlin | Levi's Team Highball | no time | |
| 66th | 110 | Mitchell / Williams / *Houser | Dodge Colt | Bolus & Snopes | no time | |
| 67th | 30 | Dallmeyer / Dunn | Chevrolet Camaro | Dallmeyer Racing | no time | |
| 68th | 3 | Bauer / DeStefano / Engels | Chevrolet Corvette | Performance Associates | no time | |
| 69th | 98 | Pearson / Spencer / Taylor | Shelby GT500 | Loren Ross | no time | |
| 70th | 92 | Oest / Heth / Olimpi / *Tillson | Porsche 911 S | Holbert's Porsche-Audi | no time | |
| 71st | 138 | Fleming / Mandeville | Mazda RX-2 | PDF Racing | no time | |
| 72nd | 32 | Boza / Hernandez / Romero | Shelby GT500 | Roberto Auto Electric | no time | |