(Race Results)
| Pos. | No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Reason | Pos. | Gr. |
| 1st | 59 | Gregg / Haywood / Helmick | Porsche Carrera RSR | Dr. Dave Helmick | 226 | 1891.3010 kms | 157.4807 | | 1st | GTO |
| 2nd | 1 | Keyser / Minter | Porsche 911 Carrera RSR | Toad Hall Motor Racing | 225 | | | | 2nd | GTO |
| 3rd | 50 | Grable / Greenwood / Brockman | Chevrolet Corvette C3 | John Greenwood Racing | 219 | | | | 3rd | GTO |
| 4th | 81 | Egerton / Forbes-Robinson | Porsche 911 Carrera RSR 2.8 | Far West Racing | 217 | | | | 4th | GTO |
| 5th | 17 | Gimondo / Dingman | Chevrolet Camaro II | Vince Gimondo | 212 | | | | 1st | TO |
| 6th | 37 | Moore / McCullough | Ford Mustang | Dan Moore | 210 | | | | 2nd | TO |
| 7th | 27 | Lindley / Behr / Goellnicht | Porsche 911 S | Don Lindley | 209 | | | | 1st | GTU |
| 8th | 76 | Stone / Downs | Porsche 911 S | Silverstone Racing Team | 209 | | | | 2nd | GTU |
| 9th | 24 | Chitwood / Chitwood / Nagel | Chevrolet Camaro | T. C. Racing | 208 | | | | 3rd | TO |
| 10th | 91 | Oest / Tillson / Bytzek | Porsche 911 S | Holbert's Porsche-Audi | 198 | | | | 3rd | GTU |
| 11th | 99 | Currin / Fortin / Johnson | Chevrolet Corvette | Phil Currin | 197 | | | | 5th | GTO |
| 12th | 42 | Sereix / Lilly / Yoder | Chevrolet Camaro | Garcia Racing | 193 | | | | 4th | TO |
| 13th | 77 | Jennings / Beasley | Porsche 911 S | Bruce Jennings | 193 | | | | 4th | GTU |
| 14th | 89 | Parish / Causey / Taylor | Porsche 911 S | Thomas Barrick | 193 | | | | 5th | GTU |
| 15th | 82 | Bergstrom / Cook | Porsche 911 S | Bob Bergstrom | 191 | | | | 6th | GTU |
| 16th | 94 | Pickett / Bean | Chevrolet Corvette | Leldon Blackwell | 186 | | | | 6th | GTO |
| 17th | 41 | Garcia / Shinn | Chevrolet Corvette | George Garcia Racing | 186 | | | | 7th | GTO |
| 18th | 84 | Selbert / Glage | Porsche 911 S | Airport Motorsports | 186 | | | | 7th | GTU |
| 19th | 49 | Greendyke / Johnson | Chevrolet Corvette C3 | John Greenwood Racing | 182 | | | DNF | 8th | GTO |
| 20th | 114 | Grob / Montalvo | BMW 2002 | Jim Grob Racing | 180 | | | | 1st | TU |
| 21st | 61 | Chapman / McLaren / Hood | Chevrolet Corvette | Sebring Racing Inc. | 179 | | | | 9th | GTO |
| 22nd | 9 | Kessler / Fitzgerald | Chevrolet Camaro | Ray Kessler Inc. | 178 | | | DNF | 5th | TO |
| 23rd | 67 | McClain / White | Porsche 914/6 | David H. McClain | 177 | | | | 8th | GTU |
| 24th | 47 | Keller / Gray / Potter | Chevrolet Corvette | Sebring Racing Inc. | 175 | | | | 10th | GTO |
| 25th | 92 | Oest / Heth / Olimpi | Porsche 911 S | Holbert's Porsche-Audi | 174 | | | | 9th | GTU |
| 26th | 90 | Walle / Schuck | Mazda RX-2 | Z & W Mazda | 173 | | | | 2nd | TU |
| 27th | 33 | Davis / Melville / Beatty | Alfa Romeo GTV | RaceCo of Coral Gables | 165 | | | DNF | 3rd | TU |
| 28th | 3 | Bauer / DeStefano / Engels | Chevrolet Corvette | Performance Associates | 159 | | | DNF | 11th | GTO |
| 29th | 00 | Diggett / Johnson | AMC Gremlin | Levi's Team Highball | 154 | | | | 6th | TO |
| 30th | 85 | Parish / Jones / Hulen | Porsche 914/6 | Donald Parish | 154 | | | | 10th | GTU |
| 31st | 74 | Groleau / Ross / Shaw | Datsun 240Z | J. G. Racing | 153 | | | | 11th | GTU |
| 32nd | 78 | Quintana / Almeida | Ford Mustang | Manuel Quintana | 150 | | | | 7th | TO |
| 33rd | 71 | Christiansen / Myers / Tremblay | Chevrolet Camaro | Robert Christiansen | 149 | | | DNF | 8th | TO |
| 34th | 57 | Garcia / Almeida | Ford Mustang | Garcia Racing | 148 | | | DNF | 9th | TO |
| 35th | 86 | Lynch / Milne | Porsche 911 ST | James Lynch | 148 | | | | 12th | GTU |
| 36th | 80 | Stumpff / Vreeland / Pirie | Shelby GT500 | J. Kirby Stumpff | 137 | | | | 12th | GTO |
| 37th | 7 | Johnson / Young | Chevrolet Camaro | Eddie Johnson | 132 | | | | 10th | TO |
| 38th | 97 | Ansley / Connelly / Avera | Chevrolet Corvette | Ansley Racing Enterprises | 131 | | | | 13th | GTO |
| 39th | 175 | Baldwin / Clark | Datsun 510 | U.S. Davis Racing | 130 | | | | 4th | TU |
| 40th | 32 | Boza / Hernandez / Romero | Shelby GT500 | Roberto Auto Electric | 127 | | | | 14th | GTO |
| 41st | 95 | Dickinson / Wachs / Pultz | Porsche 911 | G. W. Dickinson | 125 | | | DNF | 13th | GTU |
| 42nd | 69 | Goldleaf / Tunstall | Chevrolet Corvette | WGB Niagara Wines | 124 | | | DNF | 15th | GTO |
| 43rd | 88 | Lapp / Meldeau | Datsun 240Z | Bob Lapp | 124 | | | | 14th | GTU |
| 44th | 30 | Dallmeyer / Dunn | Chevrolet Camaro | Dallmeyer Racing | 124 | | | DNF | 11th | TO |
| 45th | 72 | Naon / Garcia / Freyre | Chevrolet Camaro | Alberto Naon | 123 | | | | 12th | TO |
| 46th | 83 | Gafford / Belperche | Chevrolet Camaro | Houghton Smith | 121 | | | | 13th | TO |
| 47th | 11 | DeLorenzo / Durst | Chevrolet Corvette 454 | Troy Promotions Inc. | 113 | | | Engine | 16th | GTO |
| 48th | 29 | Noseda / Mummery / Small | Chevrolet Camaro | Ralph M. Noseda | 113 | | | | 14th | TO |
| 49th | 5 | Heinz / Thompson | Chevrolet Corvette | Race Enterprise & Developments | 110 | | | | 17th | GTO |
| 50th | 48 | Greenwood / Yenko | Chevrolet Corvette | John Greenwood Racing | 105 | | | Engine | 18th | GTO |
| 51st | 40 | Nell / Dagiel / Pirrotta | Chevrolet Corvette | Pironell Racing | 104 | | | Engine | 19th | GTO |
| 52nd | 138 | Fleming / Mandeville | Mazda RX-2 | PDF Racing | 102 | | | DNF | 5th | TU |
| 53rd | 87 | Miller / Henry | Ford Mustang | Miller/Hey | 91 | | | DNF | 15th | TO |
| 54th | 2 | Donley / Scott | MGB | Dean Donley | 81 | | | DNF | 15th | GTU |
| 55th | 46 | Bytzek / Bartling | Porsche 911 S | Bytzek Automotive | 80 | | | DNF | 16th | GTU |
| 56th | 0 | Elliott / McDill | Chevrolet Camaro II | Byron Cook Racing | 80 | | | DNF | 16th | TO |
| 57th | 34 | Knupp / Tullius | Chevrolet Corvette | Murray Racing Team | 74 | | | Engine | 20th | GTO |
| 58th | 98 | Pearson / Spencer / Taylor | Shelby GT500 | Loren Ross | 71 | | | DNF | 21st | GTO |
| 59th | 62 | Stevens / Sherman | Chevrolet Corvette | Jeff Stevens Racing | 53 | | | Engine | 22nd | GTO |
| 60th | 19 | Rodriguez / McClure | Chevrolet Camaro | U. S. Davis Racing | 50 | | | DNF | 17th | TO |
| 61st | 25 | Buffum / Everett | Ford Escort | Libra International Racing | 48 | | | DNF | 6th | TU |
| 62nd | 44 | Garcia | Chevrolet Nova | Larrauri Racing | 44 | | | DNF | 18th | TO |
| 63rd | 110 | Mitchell / Williams | Dodge Colt | Bolus & Snopes | 43 | | | DNF | 7th | TU |
| 64th | 54 | Schumacher / Hay | Chevrolet Corvette | Iroquois Racing | 37 | | | DNF | 23rd | GTO |
| 65th | 70 | Dancose | Porsche 911 ST | Marc Dancose | 30 | | | DNF | 17th | GTU |
| 66th | 75 | Kuenz | Porsche 912 | Tom Kuenz | 23 | | | DNF | 18th | GTU |
| 67th | 14 | Boykin | Chevrolet Camaro | C. C. Canada | 22 | | | Axle | 19th | TO |
| 68th | 4 | Lillquist | Porsche 911 S | Western Sizzlin' Steak Houses | 19 | | | DNF | 19th | GTU |
| 69th | 28 | Fleming | Chevrolet Camaro | Ed Fleming | 17 | | | Engine | 20th | TO |
| 70th | 8 | Felton | Chevrolet Camaro II | Automotive Engineering | 6 | | | Engine | 21st | TO |
| 71st | 6 | Davidson | Chevrolet Corvette | Alex Davidson | 3 | | | Engine | 24th | GTO |
| 72nd | 26 | Cook | Chevrolet Nova | Wayne Alexander | 2 | | | Engine | 22nd | TO |
Did not start:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 15 | Kirby / Sherwin / Hotchkis | Porsche 911 S | Johnson/Bozzani | | GTU |
| 21 | Posey / Cluxton | Ferrari 365 GTB/4 | Grand Touring Cars Inc. | Overheating | GTO |
| 64 | Harrison / Buchler | Ferrari Dino 246 GT | Peter Harrison | | GTU |
| 65 | Cutler / Kirill | Porsche 914/6 | Lee Cutler | | GTU |
| 169 | Coleman / Shaw | Opel Manta 1900 | Performance Engineering | Withdrawn | TU |
Did not qualify:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 22 | Overbagh / Freeman / Peters | Ford Pinto | Mark IV Racing | | TU |
| 111 | Swanson / West | Austin America | Jeffrey Brooks | | TU |
| 168 | Whitaker / Vance / Hughes | Volvo 122 S | Whitaker/Vance | | TU |
| 176 | Oliva / Polimeni | Volvo 122 S | Laurence Oliva | | TU |
| 188 | Wolin / Cohen | Ford Pinto | Dave Wolin | | TU |
Did not practice:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 23 | Lewis / Milledge / Sebba | De Tomaso Mangusta | Riley Racing | | GTO |
Entered cars that did not arrive:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 12 | Muniz / Quintanilla | Porsche Carrera | Daniel Muniz | | GTO |
| 38 | Wolters / Smith | Chevrolet Corvette | T. R. Smith | | GTO |
| 63 | Belcher / Peters | Chevrolet Corvette | Jeff Stevens Racing | | GTO |
| 68 | Rollin / Geisel | Porsche 911 S | Rollin/Geisel | | GTU |
| 73 | Kreider / Silvers | Triumph GT6 | Dale Kreider | | GTU |
| 141 | LaCroix / Wilson | Ford Pinto | Mark IV Racing | | TU |
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