| 1st | 45 | Paul, Jr. / Adam / Ganz | March 85G Buick | Conte Racing | 1:41.490 | 1:41.4900 |
| 2nd | 0 | van der Merwe / Martin / Scheckter | March 84G Porsche | Kreepy Krauly Racing | 1:43.208 | 1:43.2080 |
| 3rd | 8 | Foyt / Wollek / Unser / Boutsen / *Howe | Porsche 962 | Henn's Swap Shop Racing | 1:43.588 | 1:43.5880 |
| 4th | 14 | Holbert / Unser, Jr. / Bell | Porsche 962 | Holbert Racing | 1:44.789 | 1:44.7890 |
| 5th | 5 | Stuck / Akin / Miller | Porsche 962 | Bob Akin Motor Racing | 1:45.471 | 1:45.4710 |
| 6th | 1 | Whittington / Lanier / Leon | March 85G Porsche | Leon Brothers Racing | 1:45.584 | 1:45.5840 |
| 7th | 86 | Boutsen / Leven / Pescarolo | Porsche 962 | Bayside Disposal Racing | 1:46.133 | 1:46.1330 |
| 8th | 88 | Leven / Pescarolo / Boutsen | Porsche 962 | Bayside Disposal Racing | 1:46.433 | 1:46.4330 |
| 9th | 44 | Redman / Tullius / Haywood | Jaguar XJR-5 | Group 44 | 1:47.003 | 1:47.0030 |
| 10th | 15 | Kalagian / Lloyd / Grunnah | March 84G Chevrolet | Kalagian Racing | 1:47.773 | 1:47.7730 |
| 11th | 04 | Ballot-Léna / Adams / Robinson | Jaguar XJR-5 | Group 44 | 1:48.039 | 1:48.0390 |
| 12th | 29 | Roe / Byrne / Brassfield | March 84G Chevrolet | DeAtley Motorsports | 1:48.290 | 1:48.2900 |
| 13th | 67 | Busby / Knoop / Mass | Porsche 962 | B.F. Goodrich | 1:48.375 | 1:48.3750 |
| 14th | 4 | Price / Baird / Hagan / Labonte | Lola T711 Chevrolet | Lee Racing | 1:48.756 | 1:48.7560 |
| 15th | 2 | McKitterick / Wolters / Leon | March 84G Chevrolet | Leon Bros Racing | 1:49.203 | 1:49.2030 |
| 16th | 68 | Halsmer / Morton / Quester | Porsche 962 | B.F. Goodrich | 1:49.602 | 1:49.6020 |
| 17th | 61 | Shelton / Courtney / O'Neill | Royale RP40 Ford | Team USA/Deco Sales | 1:49.777 | 1:49.7770 |
| 18th | 25 | Miller / Cowart / DeNarvaez | March 83G Chevrolet | Red Lobster Racing | 1:50.041 | 1:50.0410 |
| 19th | 30 | Moretti / Trueman / Sigala | Alba/Momo AR5 Ford | Momo Corse | 1:50.637 | 1:50.6370 |
| 20th | 3 | Allison / Pickering / Madren | March 84G Buick Turbo | Pegasus Racing | 1:50.733 | 1:50.7330 |
| 21st | 7 | Mullen / Nierop / McIntyre | Porsche 935-84 | Bob Akin Motor Racing | 1:50.843 | 1:50.8430 |
| 22nd | 07 | St. James / Coconis / Lang | Argo JM16 Ford | LSJ Racing | 1:51.116 | 1:51.1160 |
| 23rd | 16 | Grohs / *Schlesser / *Brun / *Henn | Porsche 935 L | Henn's Swap Shop Racing | 1:52.053 | 1:52.0530 |
| 24th | 06 | Bauer / Miller / Ribbs / *Jones | Ford Mustang | Team Roush Protofab | 1:52.427 | 1:52.4270 |
| 25th | 97 | Scyphers / Glick / Cooper | Chevrolet Corvette | Scyphers-Ankor Racing | 1:53.929 | 1:53.9290 |
| 26th | 65 | Dallenbach, Jr. / Jones / Bundy / *Ribbs | Ford Mustang | Roush Protofab | 1:54.209 | 1:54.2090 |
| 27th | 90 | Delano / Petery / Riggins | Pontiac Firebird | Road Circuit Tech | 1:54.383 | 1:54.3830 |
| 28th | 6 | Morgan / Alsup / Miller | Royale RP40 Buick | Morgan Performance | 1:54.563 | 1:54.5630 |
| 29th | 9 | Newsum / Baker / Mead / Tilton | Porsche 935 K3 | Personalized Autohaus | 1:54.803 | 1:54.8030 |
| 30th | 11 | Kendall / Fitzgerald / Hotchkis | Porsche 935 K3/80 | Kendall Racing | 1:56.654 | 1:56.6540 |
| 31st | 19 | Miller / Ramirez / Redding | Nimrod NRA/C2 Aston Martin | Performance Motorcar | 1:56.950 | 1:56.9500 |
| 32nd | 33 | Anderson / Boand / Brummer | Lola T600 Chevrolet | Bo-And Racing | 1:57.076 | 1:57.0760 |
| 33rd | 80 | Bonnet / Derhaag / Lindley / *St. Lawrence | Chevrolet Camaro | Lindley Motor LTD | 1:57.886 | 1:57.8860 |
| 34th | 63 | Downing / Maffucci / Katayama | Argo JM16 Mazda | RGP 500 Racing | 1:58.895 | no time |
| 35th | 64 | Soto / Rodriguez | Chevrolet Corvette | Rene Rodriguez | 1:59.170 | 1:59.1700 |
| 36th | 89 | "Jamsal" / Galdamez / "Anbagua" | Porsche 934 | Scorpio Racing | 1:59.405 | 1:59.4050 |
| 37th | 28 | Baker / McCall / Ruttman | Chevrolet Corvette | Southern Racing Promo | 2:00.128 | 2:00.1280 |
| 38th | 51 | McComb / Mancuso / Fiala | Ferrari 512 BB/LM | Mosler Racing | 2:00.362 | 2:00.3620 |
| 39th | 95 | Van Every / Tisdelle / Refenning | Porsche 935 | Van Every Racing | 2:00.364 | 2:00.3640 |
| 40th | 21 | Cohen / Walker / Gelles | Ferrari 512 BB/LM | Gopher Motion | 2:00.571 | 2:00.5710 |
| 41st | 72 | Shafer / Nehl / Painter / *Silcox | Chevrolet Camaro | Centurion Auto Trans | 2:00.947 | 2:00.9470 |
| 42nd | 96 | Moffat / Hansford / Bartlett / McCloud | Mazda RX-7 | Allan Moffat Racing | 2:01.038 | 2:01.0380 |
| 43rd | 05 | Almeida / Morejon | Porsche 935 M16 | Hi-Tech Racing | 2:01.112 | 2:01.1120 |
| 44th | 58 | Torres / Kravig / Hammond / *Borlase | Porsche 934 | Coin Operated Racing | 2:01.158 | 2:01.1580 |
| 45th | 41 | Sereix / Noseda | Pontiac Firebird | Unlimited Telephones | 2:01.447 | 2:01.4470 |
| 46th | 93 | Marsh / Pawley / Marsh | Argo JM16 Mazda | Mid-O/Rusty Jones | 2:01.600 | 2:01.6000 |
| 47th | 20 | Baker / Herman / Maher / *Silver | Porsche 935 JLP-2 | Spirit of Cleveland | 2:02.135 | 2:02.1350 |
| 48th | 83 | Wessel / Whitaker / Kennedy / Keck | Chevrolet Corvette | K & P Racing | 2:02.173 | 2:02.1730 |
| 49th | 66 | Beasley / Lewis / Grantham | Porsche Carrera RSR | Bob Beasley | 2:02.349 | 2:02.3490 |
| 50th | 87 | Forbes-Robinson / Schneider / Istook | Porsche 924 Carrera | Performance Motorsports | 2:02.388 | 2:02.3880 |
| 51st | 70 | Cummings / Rubright / *Walker | Chevrolet Corvette | Ormond Racing | 2:02.951 | 2:02.9510 |
| 52nd | 54 | Heinz / Barnett / Thompson / *Roshausen | Chevrolet Corvette | Dave Heinz Imports | 2:03.807 | 2:03.8070 |
| 53rd | 76 | Baldwin / Young / Kline | Mazda RX-7 | Malibu Grand Prix | 2:04.295 | 2:04.2950 |
| 54th | 42 | Pruett / Lewis / Varde / *Ware | Mazda RX-7 | Mike Meyer/Daffy SWR | 2:04.487 | 2:04.4870 |
| 55th | 99 | Cord / Aase | Toyota Celica | All American Racers | 2:05.187 | 2:05.1870 |
| 56th | 37 | Welter / Nicholson / Burdsall | Tiga GT284 Mazda | Aerex Manufacturing | 2:05.282 | 2:05.2820 |
| 57th | 53 | Smith / Waugh / Febles | Mazda RX-7 | Mandeville Auto-Tech | 2:05.511 | 2:05.5110 |
| 58th | 22 | Taylor / Hayes-Harlow / Lee / *Taylor | Pontiac Firebird | Walter Johnston | 2:05.610 | 2:05.6100 |
| 59th | 71 | Johnson / Dunham / Terada | Mazda RX-7 | Team Highball | 2:05.828 | 2:05.8280 |
| 60th | 78 | Garcia / Matienzo | Pontiac Firebird | Superior Racing Team | 2:05.984 | 2:05.9840 |
| 61st | 73 | Howey / Koch / Wolf | Chevrolet Camaro | Wolf Engines | 2:07.136 | 2:07.1360 |
| 62nd | 08 | Olson / Potter / Howe / *Romano | Mazda RX-7 | Paul Romano | 2:07.933 | 2:07.9330 |
| 63rd | 38 | Yorino / Blackburn / Mandeville | Mazda RX-7 | Mandeville Auto-Tech | 2:07.951 | 2:07.9510 |
| 64th | 31 | Gralia / Donaldson / Goral | Porsche 935 | Goral Racing | 2:08.057 | 2:08.0570 |
| 65th | 35 | Speer / Hefner / Griffin | Porsche Carrera RSR | Team Dallas | 2:08.675 | 2:08.6750 |
| 66th | 92 | Gennone / Prego / Overbagh / Fuller | Chevrolet Camaro | OMR Engines | 2:08.676 | 2:08.6760 |
| 67th | 09 | Schaefer / Uria / Refenning / Figaro / *Tilton | Porsche Carrera RSR | 901 Shop | 2:08.738 | 2:08.7380 |
| 68th | 13 | Rubino / Wagoner / Knott | Mazda RX-7 | Rubino Racing | 2:08.838 | 2:08.8380 |
| 69th | 17 | Bacon / Guest / Millen | Mazda RX-7 | Al Bacon Racing | 2:09.009 | 2:09.0090 |
| 70th | 77 | Wallace / Petrick / Sikes | Mazda RX-7 | Championship Motorsports | 2:09.514 | 2:09.5140 |
| 71st | 57 | Zwiren / Pio Costa / Allison / Donnington | Mazda RX-7 | Zwiren Racing | 2:09.557 | 2:09.5570 |
| 72nd | 55 | Peters / Schwarz / Schwartz | Mazda RX-7 | Preston & Son Enterprises | 2:09.952 | 2:09.9520 |
| 73rd | 24 | Kreider / Newsome | Chevrolet Camaro | Kreider Racing | 2:10.150 | 2:10.1500 |
| 74th | 60 | Swan / Ruth / Dietrich / *Brockman | Mazda RX-7 | Hobbit Racing | 2:10.424 | 2:10.4240 |
| 75th | 81 | Alexander / Hill / Alderman | Ferrari 308 GTB | Mosler Racing | 2:11.065 | 2:11.0650 |
| 76th | 74 | Gentilozzi / *Hill / *Godsey / *Akin | Porsche 924 Carrera GTR | Whitehall Motorsports | 2:11.226 | 2:11.2260 |
| 77th | 94 | Phalf / Winfree / Hopkins | Porsche 911 | 49th Star Racing | 2:11.245 | 2:11.2450 |
| 78th | 43 | Schmidt / Schmidt / Schmidt / *Arkins | Chevrolet Corvette | Starved Rock Lodge | 2:11.452 | 2:11.4520 |
| 79th | 49 | Naon, Jr. / Vitolo / Garcia | Porsche 911 | Conrad Racing | 2:11.612 | 2:11.6120 |
| 80th | 34 | Mena / Drolsom | Porsche 924 Carrera | El Salvador Racing | 2:13.551 | 2:13.5510 |
| 81st | 02 | Newsome / Kreider | Mazda RX-7 | RNGC Racing | 2:14.407 | 2:14.4070 |
| 82nd | 23 | Howes / Reisman / Hebert | Porsche Carrera RSR | Import Restoration | 2:15.601 | 2:15.6010 |
| 83rd | 69 | Hofstra / Slater | Porsche Carrera | John Hofstra | 2:17.238 | 2:17.2380 |
| 84th | 79 | Winters / Bergstrom / Casey | Porsche 924 Carrera GTR | Whitehall Motorsports | 2:29.091 | 2:29.0910 |