| 1st | 14 | Jim Trueman / Doc Bundy / Bobby Rahal | March 83G Chevrolet | Holbert Racing | 1:24.6430 | 164.2754 |
| 2nd | 45 | Bob Lobenberg | Lola T600 Chevrolet | Conte Racing | | |
| 3rd | 44 | Bob Tullius / Bill Adam | Jaguar XJR-5 | Group 44 | | |
| 4th | 15 | John Kalagian / John Mills | Lola T600 Chevrolet | Kalagian-Ardisana | | |
| 5th | 5 | Bob Akin / John O'Steen | Porsche 935 K3/80 | Bob Akin Racing | | |
| 6th | 88 | Dale Whittington / Emory Donaldson | March 83G Chevrolet | Executone | | |
| 7th | 30 | Sarel van der Merwe / Gianpiero Moretti | Porsche 935/78-81 | Momo Corse | | |
| 8th | 25 | Dave Cowart / Kenper Miller | March 82G Porsche | Red Lobster Racing | | |
| 9th | 83 | Don Devendorf | Datsun 280ZX Turbo | Electramotive | 1:31.2520 | 152.3775 |
| 10th | 22 | Drake Olson / Robert Overby | Nimrod NRA/C2 Aston Martin | Nimrod Racing | | |
| 11th | 4 | Billy Hagan / Gene Felton | Chevrolet Camaro III | Stratagraph | | |
| 12th | 91 | Chester Vincentz / Dave White | Porsche 934 | Electrodyne | | |
| 13th | 9 | Wayne Baker / Jim Mullen / Kees Nierop | Porsche 934 | WLB Racing | | |
| 14th | 7 | Pete Halsmer | Mazda RX-7 | Racing Beat | | |
| 15th | 18 | "Fomfor" / Whitney Ganz | BMW M1 | Fomfor | | |
| 16th | 99 | Dennis Aase / Roberto Moreno | Toyota Celica | All-American Racers | 1:34.9070 | 146.5082 |
| 17th | 21 | Jack Miller / Mike Brummer / Carlos Ramirez | Nimrod NRA/C2 Aston Martin | Nimrod Racing | | |
| 18th | 24 | Ken Madren / M. L. Speer | Porsche 935 JLP-2 | Pegasus III Racing | | |
| 19th | 98 | Wally Dallenbach, Jr. / Boy Hayje | Toyota Celica | All-American Racers | | |
| 20th | 82 | Joe Varde / Jack Baldwin | Mazda RX-7 | Western Airlines | | |
| 21st | 85 | Logan Blackburn / Elliot Forbes-Robinson | Datsun 280ZX | Logan Blackburn | | |
| 22nd | 03 | Werner Frank / Rick Borlase | Porsche 934 | Toyota Village | | |
| 23rd | 38 | Roger Mandeville / Amos Johnson | Mazda RX-7 | Mandeville Auto/Tech | | |
| 24th | 56 | Bill Wink / Tim Evans | Chevrolet Corvette | Bill Wink Racing | | |
| 25th | 63 | Jim Downing / John Maffucci | Mazda RX-7 | RGP 500 Racing | | |
| 26th | 34 | George Drolsom / Kathy Rude | Porsche 924 Carrera | Drolsom Racing | | |
| 27th | 79 | Bob Bergstrom | Porsche 924 Carrera GTR | Promotion-Whitehall | | |
| 28th | 40 | Uli Bieri / Matt Gysler | BMW M1 | Bieri Racing | | |
| 29th | 20 | Paul Canary | Pontiac Firebird | Paul Canary Racing | | |
| 30th | 32 | George Alderman / Carson Baird | Datsun 280ZX | Alderman Datsun | | |
| 31st | 95 | Bob Leitzinger / Frank Honsowetz | Datsun 280ZX | Leitzinger Racing | | |
| 32nd | 17 | Al Bacon / Jim Cook | Mazda RX-7 | Al Bacon Racing | | |
| 33rd | 64 | John Hulen / Ron Coupland | Porsche Carrera RSR | John Hulen | | |
| 34th | 74 | Del Russo Taylor | Chevron GTP Buick | Mark Wagoner | | |
| 35th | 61 | Don Courtney / Brent O'Neill | Chevrolet Monza | Vista Racing | | |
| 36th | 36 | Jim Busby / Ron Grable | Porsche 924 Carrera Turbo | Herman+Miller P+A | | |
| 37th | 23 | Earl Roe / Tim Selby | Porsche 914/6 | Roe/Selby Racing | | |
| 38th | 8 | Bob Beasley | Porsche Carrera RSR | Bob Beasley | | |
| 39th | 35 | Al Leon / Wayne Pickering | Porsche Carrera RSR | Team Dallas | | |
| 40th | 71 | Charles Morgan / Jim Miller | Datsun 280ZX | Morgan Performance | | |
| 41st | 51 | Ron Pawley / Don Marsh / Kelly Marsh | Mazda RX-7 | Midvo Racing | | |
| 42nd | 57 | Reed Kryder / Art Leon | Datsun 280ZX | Kryderacing | | |
| 43rd | 43 | Bill Miller / Jack Ries / Carl Holbrook | Datsun 280ZX | Bill Miller | | |
| 44th | 37 | Tom Burdsall / Peter Welter / Paul Gilgan | Mazda RX-7 | Vero Racing | | |
| 45th | 27 | Jim Fowells / Ray Mummery | Mazda RX-7 | Scuderia Rosso | | |
| 46th | 96 | Phil Byrd / Richard Silver | Porsche Carrera RSR | Weld Fixturing | | |
| 47th | 65 | Terry Whitlock / Roger Schroer | Lola T240 Mazda | Hanover Automotive | | |
| 48th | 08 | Bobby Diehl / Roy Newsome | Mazda RX-7 | Diehl Hi-Pro | | |
| 49th | 93 | Frank Rubino / David Leira | Mazda RX-7 | Rubino Racing | | |
| 50th | 29 | George Philips | Datsun 280ZX | George Philips | | |