| 1st | 86 | Haywood / Holbert / Leven | Porsche 935/80 | Bayside Disposal Racing | 245 | 2050.3040 kms | 170.6613 | | 1st | GTX |
| 2nd | 90 | Woods / Kent-Cooke / McKitterick | Porsche 935 K3 | Cooke Woods Racing/Garretson Enterprises | 242 | | | | 2nd | GTX |
| 3rd | 2 | Hinze / Minter / Whittington | Porsche 935 K3 | Marty Hinze Racing | 240 | | | | 3rd | GTX |
| 4th | 3 | Meister / Stommelen / Grohs | Porsche 935 M16 | Andial/Meister Racing | 233 | | | | 4th | GTX |
| 5th | 58 | Kendall / Smith / Aase | Porsche Carrera RSR | Charles Kendall | 218 | | | | 1st | GTO |
| 6th | 30 | Moretti / Mendez / DeNarvaez | Porsche 935J | Momo/Penthouse | 213 | | | Electrics | 5th | GTX |
| 7th | 23 | Selby / Roe | Porsche Carrera | Roe/Selby Racing | 212 | | | | 2nd | GTO |
| 8th | 73 | Speer / Joosen / Vermeersch | Mazda RX-7 | Z & W Enterprises | 212 | | | | 3rd | GTO |
| 9th | 98 | Mueller / Bohren | Mazda RX-7 | Kent Racing | 211 | | | | 1st | GTU |
| 10th | 44 | Tullius / Adam | Triumph TR8 | Group 44 | 208 | | | | 4th | GTO |
| 11th | 67 | Ramirez / Gordillo / Villa | Porsche 911 | Pennzoil of Puerto Rico | 208 | | | | 2nd | GTU |
| 12th | 04 | Rodriguez / Almeida / Morejon | Porsche Carrera RSR | T & R Racing | 203 | | | | 5th | GTO |
| 13th | 54 | Naon / Garcia / Cruz | Porsche Carrera RSR | Florida Crystals/Montura Racing | 203 | | | | 6th | GTO |
| 14th | 35 | Gonzalez / Fernandez / Cochesa | Porsche 934 | H.S.M. Racing | 199 | | | | 7th | GTO |
| 15th | 50 | Downing / Hoerr / Hoerr | Mazda RX-7 | Downing/Maffucci Racing | 196 | | | | 3rd | GTU |
| 16th | 49 | Cosentino / Speakman | Mazda RX-7 | Faza Squadra | 190 | | | | 4th | GTU |
| 17th | 9 | Garretson / Rahal / Redman | Porsche 935 K3/80 | Cooke Woods Racing/Garretson Enterprises | 190 | | | | 6th | GTX |
| 18th | 45 | Mitchell / Ratcliff / Cooper | Porsche 914/6 | Autosport Technology | 189 | | | Gearbox | 5th | GTU |
| 19th | 28 | Posey / Stiff | Datsun 280ZX | NTS Racing | 187 | | | Suspension | 8th | GTO |
| 20th | 4 | Kelly / Bedard | Triumph TR8 | Group 44 | 187 | | | | 9th | GTO |
| 21st | 32 | Alderman / McComb | Datsun 240Z | Alderman Datsun | 186 | | | Suspension | 6th | GTU |
| 22nd | 77 | Jennings / Bean / Ashby | Porsche 911 | Bruce R. Jennings | 185 | | | | 7th | GTU |
| 23rd | 68 | Valentine / Carter | Chevrolet Corvette | USA Racing | 182 | | | | 7th | GTX |
| 24th | 05 | Flaquer / Gonzalez / Dominguez | Porsche Carrera RSR | Miguel Morejon | 182 | | | | 10th | GTO |
| 25th | 31 | Arutunoff / Marina | Lancia Stratos | Hallet Motor Racing Circuit | 177 | | | | 8th | GTU |
| 26th | 84 | "Jamsal" / Barrientos / Valiente | Porsche 935 M16 | Scorpio Racing | 177 | | | | 8th | GTX |
| 27th | 25 | Cowart / Miller | BMW M1 | Red Lobster Racing | 176 | | | | 11th | GTO |
| 28th | 81 | Dietrich / Winters / McDonough | Mazda RX-7 | Trinity Racing | 174 | | | | 9th | GTU |
| 29th | 83 | Shafer / Shafer / Crookston | Chevrolet Camaro | George R. Shafer | 173 | | | | 9th | GTX |
| 30th | 34 | Drolsom / Hoskins / Marcus | Porsche 924 Carrera GTR Turbo | Drolsom Racing | 165 | | | | 12th | GTO |
| 31st | 92 | Rude / Galica | Mazda RX-7 | Kent Racing | 160 | | | DNF | 10th | GTU |
| 32nd | 15 | Lutz / Panaccione | Porsche 911 Carrera RSR | D. L. Performance Engineering | 155 | | | | 13th | GTO |
| 33rd | 52 | Swanson / Cripe / McDonald | Porsche 911 | Ours & Hours Racing | 154 | | | | 11th | GTU |
| 34th | 43 | Gregg / Young / Varde | Porsche Carrera | Bob Gregg Racing | 153 | | | DNF | 14th | GTO |
| 35th | 88 | Bitterauf / Moxley / Leo | Porsche 911 | Klaus Bitterauf | 150 | | | | 12th | GTU |
| 36th | 41 | Hagan / Labonte | Chevrolet Camaro | Stratagraph | 144 | | | DNF | 10th | GTX |
| 37th | 24 | Refenning / Tilton / Welter | Porsche 934 | Jack Refenning | 139 | | | DNF | 15th | GTO |
| 38th | 39 | Higgins / Mead / Johnson | Porsche 911 | The Foreign Exchange | 136 | | | | 13th | GTU |
| 39th | 66 | Dunham / Sheehy / Sereix | Mazda RX-7 | Dunham Trucking | 136 | | | | 14th | GTU |
| 40th | 02 | Morton / Klausler | Ford Mustang | Firestone Tire & Rubber | 133 | | | | 11th | GTX |
| 41st | 1 | Fitzpatrick / Busby | Porsche 935 K3/80 | John Fitzpatrick Racing | 129 | | | Drive shaft | 12th | GTX |
| 42nd | 60 | Lee / Smith / Marx | AMC AMX | Bob's Speed Products | 128 | | | | 16th | GTO |
| 43rd | 62 | Koll / Kline | Porsche 911 S | Kegel Enterprises | 121 | | | DNF | 15th | GTU |
| 44th | 0 | Field / Ongais | Porsche 935 K3/80 | Interscope Racing | 117 | | | Electrics | 13th | GTX |
| 45th | 53 | Hochreuter / Brezinka / Hirsch | Porsche Carrera | Fritz Hochreuter | 114 | | | DNF | 17th | GTO |
| 46th | 27 | LaGrow / Turner | Chevrolet Camaro | Kenneth LaGrow/Jack Holley | 114 | | | Accident | 14th | GTX |
| 47th | 7 | Mullen / Zimicki | Mazda RX-7 | Loud Car Racing | 112 | | | DNF | 16th | GTU |
| 48th | 09 | Henn / Gunn / Belcher | Porsche 935 K3 | T-Bird Swap Shop | 107 | | | DNF | 15th | GTX |
| 49th | 14 | Gebhardt / Surer | BMW M1 | BMW Challenge Team | 106 | | | Engine | 18th | GTO |
| 50th | 57 | Baker / Overby / Gilliland | Porsche 914/6 | Personalized Autohaus | 96 | | | DNF | 17th | GTU |
| 51st | 72 | Taylor / Ramsey | Chevron GTP Alfa Romeo | Vince Thompson | 96 | | | | 16th | GTX |
| 52nd | 20 | Cord / Adams | Chevrolet Monza | Chris Cord Racing | 94 | | | DNF | 17th | GTX |
| 53rd | 97 | Cummings / Juckette | Chevrolet Monza | The Cummings Marque | 94 | | | Electrics | 18th | GTX |
| 54th | 55 | Mandeville / Johnson | Mazda RX-7 | Mandeville Racing Ent. | 89 | | | Transmission | 18th | GTU |
| 55th | 93 | Carusso / Boy / Ramsey | Chevrolet Corvette | Sanyo/Russ Boy | 89 | | | Mechanical | 19th | GTO |
| 56th | 48 | McDill / Whitaker | Chevrolet Camaro | Meldeau Tire Stores | 85 | | | DNF | 19th | GTX |
| 57th | 29 | Northam / Soldevilla | Porsche Carrera RSR | Bill Ferran | 84 | | | DNF | 20th | GTO |
| 58th | 82 | Cook / Casey / Bergstrom | Mazda RX-7 | Trinity Racing | 74 | | | DNF | 19th | GTU |
| 59th | 12 | Tumbleston / Dumont / Smith | Chevrolet Camaro | Performance Marine Racing | 63 | | | Engine | 21st | GTO |
| 60th | 5 | Akin / Bell / Siebert | Porsche 935 K3 | Bob Akin Motor Racing | 62 | | | Engine? | 20th | GTX |
| 61st | 75 | Honegger / Dieudonné / Libert | Mazda RX-7 | Z & W Enterprises | 60 | | | Out of fuel | 20th | GTU |
| 62nd | 07 | Heimrath / Heimrath, Jr. | Porsche 935 | Heimrath Porsche | 57 | | | Accident | 21st | GTX |
| 63rd | 16 | Grunnet / Burt / Paquette | Mazda RX-7 | Corp Racing Ltd. | 50 | | | DNF | 21st | GTU |
| 64th | 40 | Deacon / Freberg / Bartling | BMW M1 | David Deacon Racing | 47 | | | DNF | 22nd | GTO |
| 65th | 94 | Whittington / Whittington / Whittington | Porsche 935 K3 | Whittington Bros | 43 | | | Engine | 22nd | GTX |
| 66th | 8 | Paul / Paul, Jr. | Porsche 935 JLP-3 | JLP Racing | 40 | | | Suspension | 23rd | GTX |
| 67th | 79 | Van Every | Porsche Carrera RSR | Van Every Racing | 27 | | | Engine | 23rd | GTO |
| 68th | 56 | Borlase | Porsche Carrera | Rick Borlase | 27 | | | DNF | 24th | GTO |
| 69th | 03 | Pallavicini | Porsche 934 | Angelo Pallavicini | 23 | | | DNF | 25th | GTO |
| 70th | 89 | Levenson | Chevrolet Corvette | Vette Brakes | 21 | | | Withdrawn | 26th | GTO |
| 71st | 42 | Cotrone / Showket | Chevrolet Corvette | Cotrone Racing Enterprises | 20 | | | DNF | 27th | GTO |
| 72nd | 85 | Loving | Chevrolet Camaro | Sunrise Auto Parts | 18 | | | Electrics | 28th | GTO |
| 73rd | 61 | Canada | Chevrolet Corvette | Sharkskin Racing | 15 | | | DNF | 29th | GTO |
| 74th | 38 | Case | Porsche 911 | Case Racing | 12 | | | Accident | 22nd | GTU |
| 75th | 70 | Doyle | Mazda RX-7 | Doyle Racing | 10 | | | DNF | 23rd | GTU |
| 76th | 21 | Aschenbrenner | Porsche 914/6 | Alps Restoration | 6 | | | DNF | 24th | GTU |
| 77th | 13 | Lino | Chevrolet Corvette | Garcia Racing | 2 | | | Electrics | 30th | GTO |
| 78th | 37 | Taylor | Alfa Romeo GTV | Vince Thompson | 1 | | | Electrics | 25th | GTU |