| 1st | 00 | van der Merwe / Duxbury / Martin | March 83G Porsche | Kreepy Krauly Racing | 640 | 3986.0229 kms | 165.9539 | | 1st | GTP |
| 2nd | 6 | Foyt / Wollek / Bell | Porsche 935 L | Henn's Swap Shop Racing | 631 | | | | 2nd | GTP |
| 3rd | 44 | Bundy / Hobbs / Tullius | Jaguar XJR-5 | Group 44 | 612 | | | | 3rd | GTP |
| 4th | 86 | Holbert / Ballot-Léna / Haywood / Leven | Porsche 935/80 | Bayside Disposal Racing | 604 | | | | 4th | GTP |
| 5th | 9 | Baker / Mullen / Blackaller | Porsche 935 K3 | La Jolla Trading Group | 602 | | | | 5th | GTP |
| 6th | 4 | Hagan / Labonte / Felton | Chevrolet Camaro III | Stratagraph/Piedmont | 588 | | | | 1st | GTO |
| 7th | 29 | Cooper / Evans / Smith | Nimrod NRA/C2 Aston Martin | CAM Motorsports | 587 | | | | 6th | GTP |
| 8th | 2 | Leon / Leon / Wolters | March 84G Chevrolet | Leon Bros Racing | 580 | | | | 7th | GTP |
| 9th | 63 | Downing / Maffucci / Ganz | Argo JM16 Mazda | RGP 500 Racing | 579 | | | | 8th | GTP |
| 10th | 09 | Tisdelle / Van Every | Porsche Carrera RSR | Van Every Racing | 579 | | | | 2nd | GTO |
| 11th | 45 | Morton / Lobenberg / Garcia | Lola T600 Chevrolet | Conte Racing | 578 | | | | 9th | GTP |
| 12th | 76 | Young / Reed / Baldwin / Cook | Mazda RX-7 | Malibu Grand Prix | 574 | | | | 1st | GTU |
| 13th | 7 | Pridgen / Bond / Tilton | Porsche 911 | E. J. Pruitt & Sons | 571 | | | | 2nd | GTU |
| 14th | 38 | Mandeville / Johnson / Smith | Mazda RX-7 | Mandeville Auto/Tech | 569 | | | | 3rd | GTO |
| 15th | 92 | Attwood / Elford / Meister / Hagestad | Porsche 928 S | Brumos Racing | 569 | | | | 4th | GTO |
| 16th | 28 | Mallock / Olson / Sheldon | Nimrod NRA/C2B Aston Martin | Ray Mallock Racing | 562 | | | | 10th | GTP |
| 17th | 68 | Halsmer / Grable / Knoop / Quester | Lola T616 Mazda | B.F. Goodrich | 562 | | | | 11th | GTP |
| 18th | 66 | Dunham / Lewis / Kline | Mazda RX-7 | Mike Meyer Racing | 553 | | | | 3rd | GTU |
| 19th | 24 | Hefner / Griffin / Gralia | Porsche 935 JLP-2 | Pegasus Racing | 547 | | | | 12th | GTP |
| 20th | 82 | Mueller / Casey / Visger | Mazda RX-7 | Firestone | 542 | | | | 4th | GTU |
| 21st | 87 | Forbes-Robinson / Schneider / Williams | Porsche 924 Carrera | Performance Motorsports | 529 | | | | 5th | GTU |
| 22nd | 18 | "Fomfor" / Naon / Montoya | Sauber C7 BMW | Fomfor Racing | 509 | | | | 13th | GTP |
| 23rd | 55 | Stevens / Brainard / Herman | Mazda RX-7 | Preston & Son Ent. | 494 | | | | 6th | GTU |
| 24th | 04 | Adam / Bedard / Redman | Jaguar XJR-5 | Group 44 | 481 | | | | 14th | GTP |
| 25th | 43 | Davey / Montoya / Goellnicht | BMW M1 | Walker-Brown Racing | 477 | | | | 5th | GTO |
| 26th | 05 | Morejon / Garcia / Almeida | Porsche 935 M16 | Hi-Tech Racing | 470 | | | | 15th | GTP |
| 27th | 35 | Smith-Haas / Gilgan / Zouzelka | Porsche Carrera RSR | Team Dallas | 463 | | | | 6th | GTO |
| 28th | 37 | Burdsall / Northam / Welter | Mazda RX-7 | Vero Racing Ent. | 433 | | | Clutch | 7th | GTU |
| 29th | 03 | Adams / Mason / Thompson | Chevrolet Monza | Mason Racing | 432 | | | | 16th | GTP |
| 30th | 32 | Price / Alderman / Baird | Datsun 280ZX | Lee Industries/Alderman Datsun | 409 | | | Accident | 8th | GTU |
| 31st | 67 | Busby / Knoop / Hayje | Lola T616 Mazda | B.F. Goodrich | 391 | | | Engine | 17th | GTP |
| 32nd | 40 | Bieri / Pallavicini / Gysler | BMW M1 | Bieri Racing | 384 | | | | 7th | GTO |
| 33rd | 01 | Hulse / Lott / Kennedy / DeFontes | Porsche Carrera RSR | THR Foreign Car | 356 | | | | 8th | GTO |
| 34th | 61 | O'Neill / Courtney / Sereix | Chevrolet Monza | Deco Sales Associates | 336 | | | DNF | 9th | GTO |
| 35th | 02 | Gelles / Brummer / Cohen | Chevrolet Camaro | OMR Engines | 330 | | | Engine | 10th | GTO |
| 36th | 17 | Bacon / Krueger / Guest | Mazda RX-7 | Al Bacon Racing | 326 | | | Engine | 9th | GTU |
| 37th | 27 | Fowells / Potter / Mummery | Mazda RX-7 | Scuderia Rosso | 324 | | | Engine | 10th | GTU |
| 38th | 77 | Baker / Marlin | Chevrolet Corvette | Southern Racing Promins | 316 | | | | 11th | GTO |
| 39th | 99 | Cord / Adams | Toyota Celica | All American Racers | 292 | | | DNF | 11th | GTU |
| 40th | 22 | Schwarz / Allen / Spenard | Pontiac Firebird | Oftedahl Racing | 290 | | | DNF | 12th | GTO |
| 41st | 46 | Fassler / Jellinek / Molnar | Pontiac Firebird | Tycos Racing | 271 | | | DNF | 13th | GTO |
| 42nd | 26 | Nehl / Hansen / Silcox | Chevrolet Corvette | Zabatt | 270 | | | DNF | 14th | GTO |
| 43rd | 90 | Schaefer / Andretti / Nicholson / Refenning | Porsche 911 | 901 Shop | 258 | | | DNF | 12th | GTU |
| 44th | 53 | Overby / Bell / Pelz | Pontiac Firebird | Daytona Racing | 245 | | | Engine | 15th | GTO |
| 45th | 75 | Young / Varde / Gregg | Chevrolet Camaro | Bob Gregg Racing | 245 | | | Electrics | 16th | GTO |
| 46th | 41 | Schmidt / Schmidt / Schmidt | Chevrolet Corvette | Starved Rock Lodge | 245 | | | DNF | 17th | GTO |
| 47th | 97 | Shelton / Shelton | Ferrari 512 BB/LM | Tide & Mosler Racing | 242 | | | DNF | 18th | GTP |
| 48th | 79 | Bergstrom / Ireland / Winters | Porsche 924 Carrera GTR | Whitehall/Promotion | 236 | | | DNF | 13th | GTU |
| 49th | 19 | Miller / Ramirez / Smith | Nimrod NRA/C2 Aston Martin | Performance Motorcar | 235 | | | DNF | 19th | GTP |
| 50th | 11 | Ruttman / Laws / Schoenfeld / Richmond | Chevrolet Camaro | Dillon Enterprises | 227 | | | Accident | 20th | GTP |
| 51st | 8 | Lewis / Beasley / Ashford | Porsche Carrera RSR | Rennsport Enterprise | 220 | | | DNF | 18th | GTO |
| 52nd | 51 | Wilder / DeFranceschi / McCall | Porsche 911 | Chris Wilder | 212 | | | DNF | 14th | GTU |
| 53rd | 54 | Redding / Long / Copeman / Jolly | Porsche Carrera RSR | Bob Copeman | 197 | | | | 19th | GTO |
| 54th | 70 | Weitzenhof / Loring / Honegger | Mazda GTP | Z & W Motorsports | 187 | | | Accident | 21st | GTP |
| 55th | 3 | Madren / Pickering / Speer | March 84G Buick Turbo | Pegasus Racing | 186 | | | DNF | 22nd | GTP |
| 56th | 5 | Akin / O'Steen / Rahal | Porsche 935-84 | Bob Akin Motor Racing | 181 | | | Body | 23rd | GTP |
| 57th | 85 | Fonseca / Fallas / "Jamsal" | Porsche Carrera RSR | Latino Racing | 179 | | | DNF | 20th | GTO |
| 58th | 10 | Kendall / Johnson / White | Porsche 924 Carrera GTR | Dave White Racing | 162 | | | DNF | 15th | GTU |
| 59th | 60 | Cook / Morrison / Swan | Mazda RX-7 | Team Morrison | 162 | | | DNF | 16th | GTU |
| 60th | 39 | Newsome / Diehl / Kreider / Sereix | Chevrolet Corvette C3 | Luger Reality | 157 | | | DNF | 21st | GTO |
| 61st | 73 | Howey / Crabtree / Wolf | Chevrolet Camaro | Howey Farms | 150 | | | DNF | 22nd | GTO |
| 62nd | 47 | Bohren / Dingman / Bighouse | Chevrolet Corvette C3 | Dingman Bros Racing | 135 | | | DNF | 23rd | GTO |
| 63rd | 16 | Lanier / Hinze / Whittington | March 83G Chevrolet | Marty Hinze Racing | 131 | | | Gearbox | 24th | GTP |
| 64th | 93 | Marsh / Marsh / Pawley | Mazda RX-7 | Mid-O Racing | 129 | | | Engine | 17th | GTU |
| 65th | 57 | Febles / Ferrer | Porsche Carrera RSR | Diego Febles Racing | 127 | | | DNF | 24th | GTO |
| 66th | 1 | Andretti / Andretti | Porsche 962 | Dr. Ing. H. C. F. Porsche | 127 | | | DNF | 25th | GTP |
| 67th | 72 | Riggins / Delano / Petery | Chevrolet Camaro III | Centurian Auto Transport | 126 | | | DNF | 25th | GTO |
| 68th | 21 | Field / Newsum / McFarlin | Pontiac Firebird | Oftedahl Racing | 118 | | | DNF | 26th | GTO |
| 69th | 58 | Trueman / Gregg / Mena | Porsche 924 Carrera | El Salvador Racing | 110 | | | DNF | 18th | GTU |
| 70th | 07 | Heimrath / Heimrath, Jr. | Porsche 930 | Heimrath Racing | 90 | | | DNF | 26th | GTP |
| 71st | 49 | Bender / Boand / Utt / Currin | Chevrolet Corvette | Comp. Fiberglass | 66 | | | Suspension | 27th | GTO |
| 72nd | 20 | Canary / Sanborn / Gonzalez | Chevrolet Corvette | Paul Canary Racing | 64 | | | DNF | 28th | GTO |
| 73rd | 25T | Cowart / Miller / DeNarvaez | March 83G Chevrolet | Red Lobster Racing | 60 | | | Accident | 27th | GTP |
| 74th | 94 | Gardner / Sanders / Durovy | Pontiac Firebird | Tangent Racing | 52 | | | DNF | 29th | GTO |
| 75th | 88 | Murray / Valentine / Barnett | Chevrolet Camaro | Motorsport Marketing | 51 | | | Gearbox | 30th | GTO |
| 76th | 98 | Dallenbach, Jr. / Chandler / Aase | Toyota Celica | All American Racers | 49 | | | Engine | 19th | GTU |
| 77th | 91 | Taylor / Figaro | Pontiac Firebird | Walter Johnston | 38 | | | DNF | 31st | GTO |
| 78th | 33 | Keck / Wessel / Chastain | Chevrolet Corvette C3 | K & P Racing | 38 | | | DNF | 32nd | GTO |
| 79th | 15 | Kalagian | Lola T600 Chevrolet | Kalagian Ardisana | 27 | | | Axle | 28th | GTP |
| 80th | 23 | Carney | Datsun 200SX | New Raytown Datsun | 25 | | | Suspension | 20th | GTU |
| 81st | 84 | Young | Pontiac Fiero | Auto-Line Motorsport | 19 | | | Engine | 21st | GTU |
| 82nd | 13 | Rubino | Mazda RX-7 | Rubino Racing | 17 | | | Engine | 22nd | GTU |