| 1st | 40 | Sarel van der Merwe / Bill Adam | Chevrolet Corvette GTP | Hendricks Motorsports | 1:38.8830 |
| 2nd | 12 | David Hobbs / Davy Jones / John Andretti | March 85G BMW GTP | BMW North America | 1:39.7210 |
| 3rd | 14 | Al Holbert / Al Unser, Jr. | Porsche 962 | Holbert Racing | 1:40.0580 |
| 4th | 16 | Drake Olson / Bobby Rahal | Porsche 962 | Dyson Racing | 1:40.0990 |
| 5th | 68 | Pete Halsmer / John Morton | Porsche 962 | BF Goodrich | 1:40.5790 |
| 6th | 86 | Bob Wollek | Porsche 962 | Bayside Disposal Racing | 1:40.6330 |
| 7th | 5 | Bob Akin / Jo Gartner | Porsche 962 | Bob Akin Motor Racing | 1:40.7100 |
| 8th | 46 | John Paul, Jr. | Hawk-March 85G Buick | Conte Racing | 1:41.6200 |
| 9th | 44 | Bob Tullius / Chip Robinson | Jaguar XJR-7 | Group 44 | 1:42.5800 |
| 10th | 67 | Jim Busby / Rick Knoop | Porsche 962 | BF Goodrich | 1:42.9900 |
| 11th | 04 | Brian Redman / Hurley Haywood | Jaguar XJR-5 | Group 44 | 1:44.3500 |
| 12th | 15 | John Kalagian / Jim Mullen | March 85G Porsche | Kalagian Ardisana | 1:44.3760 |
| 13th | 45 | John Paul, Jr. / Whitney Ganz / Ken Madren | Hawk-March 85G Buick | Conte Racing | 1:44.8400 |
| 14th | 1 | Randy Lanier / Michael Roe | March 84G Chevrolet | Blue Thunder Racing Team | 1:46.3270 |
| 15th | 4 | Lew Price / Chip Mead / Carson Baird | Chevrolet Corvette GTP | Lee Racing | 1:46.9480 |
| 16th | 05 | Jim Trueman / Ludwig Heimrath, Jr. | Alba AR5 Ford | Truesports | 1:47.0000 |
| 17th | 22 | Calvin Fish | March 84G Chevrolet | Leon Bros Racing | 1:47.2900 |
| 18th | 2 | Al Leon / Art Leon | March 85G Porsche | Leon Bros Racing | 1:49.3100 |
| 19th | 65 | John Jones / Lyn St. James | Ford Mustang | Team Roush Protofab | 1:50.2390 |
| 20th | 56 | Craig Carter | Chevrolet Camaro | | 1:50.6300 |
| 21st | 74 | Tommy Riggins | Pontiac Firebird | Dingman Bros. Racing | 1:51.5200 |
| 22nd | 77 | Darin Brassfield / Scott Pruett | Ford Thunderbird | Brooks Racing | 1:51.7000 |
| 23rd | 33 | Bard Boand / Mike Allen | Lola T600 Chevrolet | Bo-And Racing | 1:52.7900 |
| 24th | 8 | A. J. Foyt / Al Holbert | Porsche 962 | Preston Henn | |
| 25th | 47 | Steve Millen / Tommy Riggins | Pontiac Firebird | Dingman Brothers Racing | 1:53.0900 |
| 26th | 98 | Dennis Aase | Toyota Celica Turbo | All American Racers | 1:53.2900 |
| 27th | 63 | Jim Downing / John Maffucci | Argo JM19 Mazda | Jim Downing | 1:54.5900 |
| 28th | 09 | Marshall Robbins / Tommy Byrne | Ford Mustang | | |
| 29th | 61 | Brent O'Neill / Mike Hackney | Royale RP40 Buick | Team USA Racing | |
| 30th | 21 | Ron Nelson / Dominic Dobson / Howard Siegel | Tiga GT285 Mazda | Siegel Racing | |
| 31st | 9 | Michael Greenfield / Peter Greenfield | Tiga GT285 Mazda | Essex Racing | |
| 32nd | 6 | Charles Morgan / Bill Alsup | Royale RP40 Buick | Morgan Performance | |
| 33rd | 91 | Chester Vincentz | Porsche 934 | Electrodyne Performance | |
| 34th | 01 | Don Bell / Mike Brockman | Argo JM16 Buick | AT&T | |
| 35th | 42 | Martino Finotto / Carlo Facetti / Almo Coppelli | Alba AR2 Ferrari | | |
| 36th | 75 | Jack Baldwin / Jeff Kline / Ira Young | Alba AR4 Mazda | Malibu | |
| 37th | 62 | Fernando Robles / Chris Marte | Ford Mustang | Roush | |
| 38th | 94 | Ron Pawley | Argo JM19 Mazda | Mid-O Racing | |
| 39th | 90 | Les Delano / Andy Petery | Pontiac Firebird | Road Circuit Technology | |
| 40th | 55 | Dave Heinz / Dale Kreider / Tim Stringfellow | Chevrolet Corvette | Dave Heinz Imports | |
| 41st | 88 | J. Kurt Roehrig / Jerry Molnar | Buick Regal | | |
| 42nd | 66 | Jim Rothbarth | Royale RP40 Mazda | Mike Meyer Racing | |
| 43rd | 38 | Roger Mandeville / Logan Blackburn | Mazda RX-7 | Mandeville Auto Tech | |
| 44th | 43 | Don Walker / Brian Goellnicht / Steve Cohen | BMW M1 | | |
| 45th | 81 | Ken Bupp / Guy Church | Chevrolet Camaro | Ken Bupp | |
| 46th | 27 | Jim Fowells / Ray Mummery | Argo JM19 Mazda | M S B Racing | |
| 47th | 06 | John Schneider | Porsche 924 Carrera | | 2:01.4590 |
| 48th | 28 | Richard Kidd / Steve Zwiren | Pontiac Firebird | | |
| 49th | 53 | Danny Smith / Roger Mandeville | Mazda RX-7 | Mandeville Auto Tech | |
| 50th | 32 | George Alderman / Louis Baldwin | Nissan 280ZX T | Alderman Nissan | |
| 51st | 71 | Amos Johnson / Jack Dunham | Mazda RX-7 | Team Highball | |
| 52nd | 99 | Chris Cord | Toyota Celica | All American Racers | |
| 53rd | 82 | Dick Greer / John Finger | Mazda RX-7 | Aspen Inn | |
| 54th | 83 | Karl Keck / Allan Chastain | Chevrolet Corvette | | |
| 55th | 30 | Buz McCall / Tom Sheehy | Chevrolet Camaro III | | |
| 56th | 51 | Carlos Migoya / Joe Gonzalez | Chevrolet Monza | | |
| 57th | 29 | Daryl Cameron / Hoyt Overbagh | Chevrolet Camaro III | OMR Engines | |
| 58th | 17 | Al Bacon | Mazda RX-7 | Al Bacon Racing | |
| 59th | 35 | Bobby Hefner / Jack Griffin | Porsche 911 | | |
| 60th | 25 | Bob Herlin / Roger Andrey | Tiga GT285 Mazda | Gaston Andrey Racing | |
| 61st | 97 | Mark Montgomery / David Fuller | Pontiac Firebird | | |
| 62nd | 49 | Kerry Hitt / Jerry Simmons | Chevrolet Corvette C4 | | |
| 63rd | 64 | John Hulen / Ron Coupland | Porsche Carrera | John Hulen | |
| 64th | 72 | Paul Corazzo / Ed Flemke | Mazda RX-7 | | |
| 65th | 08 | Paul Romano | Mazda RX-7 | Simms-Romano | |
| 66th | 87 | Bob Speakman / Carson Hurley | Nissan 280Z | | |
| 67th | 95 | Bob Leitzinger | Nissan 300ZX | Leitzinger Racing | |
| 68th | 57 | Reed Kryder / Zoltan Polony | Nissan 280ZX | Kryderacing | |
| 69th | 26 | Del Russo Taylor | Pontiac Firebird | | |
| 70th | 78 | Peter Uria / Larry Figaro | Porsche Carrera | | |
| 71st | 48 | Bill Miller | Nissan 280Z | Bill Miller | |
| 72nd | 34 | George Drolsom | Porsche 924 Carrera | Drolsom Racing | |
| 73rd | 03 | Al Levenson | Chevrolet Corvette C3 | | |