| 1st | 14 | Holbert / Bell / Unser, Jr. | Porsche 962 | Holbert Racing | 712 | 4079.2361 kms | 169.7600 | | 1st | GTP |
| 2nd | 8 | Foyt / Luyendyk / Sullivan / Henn | Porsche 962 | Henn's Swap Shop Racing | 712 | | | | 2nd | GTP |
| 3rd | 67 | Warwick / Brassfield / Busby / Mass | Porsche 962 | B.F. Goodrich | 711 | | | | 3rd | GTP |
| 4th | 64 | Mueller / Hassey / Hester | Ford Mustang | Raintree Corporation | 622 | | 148.2045 | | 1st | GTO |
| 5th | 07 | Pruett / Ludwig / Jenner | Ford Mustang | 7-Eleven/Roush Racing | 614 | | | | 2nd | GTO |
| 6th | 44 | Tullius / Ballot-Léna / Robinson | Jaguar XJR-7 | Group 44 | 607 | | | | 4th | GTP |
| 7th | 13 | Rubino / Mummery / Schneider | Argo JM19 Mazda | Outlaw Racing | 600 | | 143.0063 | | 1st | Lights |
| 8th | 71 | Johnson / Shaw / Dunham | Mazda RX-7 | Team Highball | 597 | | 142.2901 | | 1st | GTU |
| 9th | 35 | Gonzalez / Soto / Davila / Montoya | Royale RP40 Porsche | Xtra Super Food CNT | 579 | | | | 2nd | Lights |
| 10th | 75 | Reed / Kendall / Hogdal | Mazda RX-7 | CCR | 563 | | | Engine | 2nd | GTU |
| 11th | 32 | Leitzinger / Carder / Baldwin / Alexander | Nissan 280ZX | Alderman Nissan | 537 | | | | 3rd | GTU |
| 12th | 68 | Lammers / Morton / Warwick | Porsche 962 | B.F. Goodrich | 512 | | | Accident | 5th | GTP |
| 13th | 34 | Fonseca / Mendez / "Jamsal" | Porsche 934 | Latino Racing | 512 | | | | 3rd | GTO |
| 14th | 27 | Cowart / Miller / Fowells | Argo JM19 Mazda | M S B Racing | 511 | | | | 3rd | Lights |
| 15th | 76 | Northam / Walker / Rubright | Chevrolet Corvette | Walker Racing | 506 | | | Engine | 4th | GTO |
| 16th | 98 | Aase / Cord | Toyota Celica Turbo | All American Racers | 489 | | | | 5th | GTO |
| 17th | 93 | Pawley / Marsh / Marsh | Argo JM16 Mazda | Mid O/Rusty Jones | 482 | | | Engine | 4th | Lights |
| 18th | 17 | Bacon / Scott / Krueger | Mazda RX-7 | Al Bacon Racing | 482 | | | | 4th | GTU |
| 19th | 66 | Rothbarth / Kline / Meyer | Royale RP40 Mazda | STS-Mike Meyer Racing | 477 | | | Gearbox | 5th | Lights |
| 20th | 55 | Heinz / Zwiren / Yenko / Thompson | Chevrolet Corvette | Dave Heinz Imports | 472 | | | | 6th | GTO |
| 21st | 02 | Stevens / Sereix / Newsome / Kreider | Mazda RX-7 | Roy Newsome Racing | 453 | | | Gearbox | 5th | GTU |
| 22nd | 47 | Millen / Forbes-Robinson / Riggins | Pontiac Firebird | Dingman Bros Racing | 438 | | | | 7th | GTO |
| 23rd | 72 | Bergstrom / Felton / Gentilozzi | Oldsmobile Toronado | Whitehall Rocketsports | 434 | | | Engine | 8th | GTO |
| 24th | 04 | Schuppan / Redman / Haywood | Jaguar XJR-7 | Group 44 | 430 | | | Broken rod | 6th | GTP |
| 25th | 01 | Bell / Wolters / Carter | Royale RP40 Buick | AT & T | 406 | | | Engine | 6th | Lights |
| 26th | 00 | Adams / Los / Hotchkis | March 83G Porsche | Hotchkis Racing | 402 | | | Gearbox | 7th | GTP |
| 27th | 62 | Coconis / Robles / Marte | Ford Mustang | Roush Racing | 368 | | | DNF | 9th | GTO |
| 28th | 88 | Baldwin / McConnell / Morrison / Knowles | Chevrolet Corvette | Morrison Cook Motorsport | 365 | | | Gearbox | 10th | GTO |
| 29th | 82 | Wessel / Kennedy / Fuller / Keck | Chevrolet Corvette C3 | K & P Racing | 340 | | | | 8th | GTP |
| 30th | 87 | Grable / Knowles / Heinricy / Carradine | Chevrolet Corvette | Morrison Cook Motorsport | 331 | | | Gearbox | 11th | GTO |
| 31st | 29 | Kimbrough / Gennone / Overbagh / Baljet | Chevrolet Camaro III | OMR Engines | 328 | | | Electrics | 12th | GTO |
| 32nd | 16 | Olson / Cobb / Dyson | Porsche 962 | Dyson Racing | 320 | | | Engine | 9th | GTP |
| 33rd | 45 | Paul, Jr. / Ganassi / Capelli / Ganz | Hawk-March 85G Buick | RC Buick Hawk/Conte | 310 | | | Engine | 10th | GTP |
| 34th | 83 | Reisman / Hebert / Gaffney / Stone | Pontiac Firebird | Import Restorations | 296 | | | Engine | 13th | GTO |
| 35th | 80 | Finotto / Melgrati / Coppelli | Alba AR6 Ferrari | Carma Racing | 291 | | | Engine | 7th | Lights |
| 36th | 30 | McCall / Carter / Mueller / Sheehy | Chevrolet Camaro III | Skoal Bandit | 285 | | | Electrics | 14th | GTO |
| 37th | 6 | Morgan / Blackburn / Simpson | Tiga GT286 Buick | Morgan Performance | 279 | | | Gearbox | 8th | Lights |
| 38th | 33 | Boand / Anderson / Allen | Lola T600 Chevrolet | Bo-And Racing | 266 | | | Gearbox | 11th | GTP |
| 39th | 99 | Andrews / Phillips / Bain | Tiga GC285 Ford Turbo | R. B. Promotions | 244 | | | Engine | 12th | GTP |
| 40th | 50 | Elliot / Rudd / Petty / Schrader | Ford Mustang | Folgers/Motorcraft | 240 | | | Accident | 15th | GTO |
| 41st | 56 | Montoya / Naon, Jr. / Migoya | Pontiac Firebird | Ricardo Londono | 238 | | | Steering | 16th | GTO |
| 42nd | 38 | Mandeville / Smith / Febles | Mazda RX-7 | Mandeville Auto Tech | 229 | | | Electrics | 6th | GTU |
| 43rd | 78 | Uria / Figaro / Refenning | Porsche 911 Carrera RSR | 901 Racing | 203 | | | Gearbox | 7th | GTU |
| 44th | 26 | Bupp / Hayes-Harlow / Taylor | Pontiac Firebird | Walter Johnston | 195 | | | Axle | 17th | GTO |
| 45th | 63 | Downing / O'Steen / Maffucci | Argo JM19 Mazda | Certified Brakes | 184 | | | Electrics | 9th | Lights |
| 46th | 3 | Boutsen / Larrauri | Porsche 962 | Brun Motorsports | 176 | | | Electrics | 13th | GTP |
| 47th | 9 | Brockman / Durst / Gregg / Trueman | Tiga GT285 Mazda | Rinzler Motoracing | 156 | | | Engine | 10th | Lights |
| 48th | 77 | Franchi / Gentile / Knoop | Ford Thunderbird | Brooks Racing | 150 | | | Gearbox | 18th | GTO |
| 49th | 10 | Leeward / Adam / Mead | March 82G Chevrolet | Leeward Racing | 123 | | | Gearbox | 14th | GTP |
| 50th | 2 | Leon / Fitzgerald / Grohs | March 85G Porsche | Leon Brothers Racing | 117 | | | Engine | 15th | GTP |
| 51st | 54 | Durkheimer / Auberlen / Eisenlohr / Jauker | Porsche 911 | S-P Racing/Escort | 117 | | | Accident | 8th | GTU |
| 52nd | 86 | Wollek / Daly / Leven | Porsche 962 | Bayside Disposal Racing | 116 | | | Accident | 16th | GTP |
| 53rd | 4 | Price / Mullen / Whetstine | Chevrolet Corvette GTP | Lee Racing | 104 | | | Suspension | 17th | GTP |
| 54th | 89 | Hunt / Shelton / Romano | Mazda RX-7 | Tom Hunt | 85 | | | Engine | 9th | GTU |
| 55th | 06 | Morejon / Varde / Almeida | Porsche 935 M16 | Hi-Tech Racing | 83 | | | Oil leak | 18th | GTP |
| 56th | 43 | Cohen / Christian / Congleton | BMW M1 | Global American | 68 | | | Accident | 19th | GTO |
| 57th | 90 | Delano / Petery | Pontiac Firebird | Road Circuit Technology | 67 | | | Engine | 20th | GTO |
| 58th | 37 | Welter / Newsome / Burdsall | Tiga GT285 Mazda | Burdsall-Newsome Racing | 66 | | | Engine | 11th | Lights |
| 59th | 36 | Panaccione | Porsche 924 Carrera | Case Racing | 65 | | | Engine | 10th | GTU |
| 60th | 11 | Lewis | Lola T616 Mazda | Kendall Racing | 48 | | | Engine | 12th | Lights |
| 61st | 25 | Peters | Chevrolet Camaro | Lucas Truck Service | 37 | | | Electrics | 21st | GTO |
| 62nd | 5 | Stuck | Porsche 962 | Bob Akin Motor Racing | 29 | | | Accident | 19th | GTP |
| 63rd | 46 | Ganz / Madren | Hawk-March 85G Buick | RC Buick Hawk/Conte | 27 | | | Gearbox | 20th | GTP |
| 64th | 0 | Barilla | Porsche 962 | Joest Racing | 6 | | | Electrics | 21st | GTP |
| 65th | 92 | Tisdelle | Chevrolet Camaro | Van Every Racing | 6 | | | DNF | 22nd | GTO |
| 66th | 28 | Labonte | Oldsmobile Calais | Texas Enterprises/US Tobacco | 3 | | | Engine | 23rd | GTO |