| 1st | 81 | Tom Klausler | Frissbee | U. S. Racing | 1:24.4770 | 164.5973 |
| 2nd | 25 | Jim Trueman / Bobby Rahal | Ralt RT2 Hart | Red Roof Inns | 1:25.4290 | 162.7642 |
| 3rd | 68 | Richard Guider / Bertil Roos | Cicale-March | Elite Racing | | |
| 4th | 78 | John Paul / John Paul, Jr. | Lola T600 Chevrolet | JLP Racing | 1:26.4750 | 160.7944 |
| 5th | 3 | Rolf Stommelen / Derek Bell | Porsche 935 M16 | Andial Racing | | |
| 6th | 28 | Graham McRae / Dan Furey | McRae GM9 Chevrolet | Dan Furey | | |
| 7th | 1 | John Fitzpatrick / Jim Busby | Porsche 935 K3/80 | Fitzpatrick Racing | | |
| 8th | 19 | Chris Cord / Jim Adams | Lola T600 Chevrolet | Chris Cord Racing | | |
| 9th | 5 | Bob Akin / Skeeter McKitterick | Porsche 935 K3/80 | Akin Motor Racing | | |
| 10th | 61 | E. B. Lunken / John O'Steen | March 73/77S | S.O.D.E.S. | | |
| 11th | 111 | Dennis Aase / Jim Cook | BMW M1 | Charles Kendall | 1:32.6170 | 150.1309 |
| 12th | 99 | Jake Jeppesen / Smith | Chevron B23 | G. C. Jeppesen | | |
| 13th | 43 | John Carusso / Phil Currin | Chevrolet Corvette 350 | Dynasales | | |
| 14th | 12 | Doc Bundy / Al Holbert | Porsche 924 Carrera GTR | Holbert Racing | | |
| 15th | 74 | Del Russo Taylor / Janis Taylor | Chevron GTP Buick | | | |
| 16th | 73 | Joe Salyer / Larry Wood | Chevron B26/36 | Systems-Mechanical | | |
| 17th | 79 | Tom Winters / Bob Bergstrom | Porsche 924 Carrera GTR | Promotion Ltd. | | |
| 18th | 44 | Billy Hagan / Terry Labonte | Chevrolet Camaro II 392 | Stratagraph | | |
| 19th | 31 | Larry Trotter / Larry Voit | Chevrolet Corvette 454 | Chesrown Olds-GMC | | |
| 21st | 03 | Werner Frank / Rudy Bartling | Porsche 934 | Toyota Village | | |
| 22nd | 07 | Ludwig Heimrath / Ludwig Heimrath, Jr. | Porsche 924 Carrera | Heimrath Racing | | |
| 24th | 40 | Steve Southard / Mark Altman | Porsche Carrera | Southard Motor Racing | | |
| 25th | 75 | Dale Kreider / Peter Knab | Chevrolet Corvette C3 350 | North Bay Contracting | | |
| 26th | 70 | Charles Morgan / Jim Miller | Datsun 280ZX | Morgan Performance | | |
| 27th | 26 | Earl Roe / Tim Selby | Porsche 911 Carrera | Roe/Selby Racing | | |
| 28th | 16 | Kim Mason / Don Yenko | Chevrolet Corvette C3 433 | Mason Racing/Yenko Sportscars | | |
| 29th | 18 | Ray Ratcliff / M. L. Speer | Porsche 935 JLP-2 | JLP Racing | | |
| 30th | 93 | Rainer Brezinka / Gary Hirsch | Porsche Carrera | R & H Racing | | |
| 31st | 8 | Bob Beasley / George Stone | Porsche Carrera RSR | Bob Beasley | | |
| 32nd | 9 | Bob Copeman / Lawrence Farmer | Porsche Carrera RSR | Bob Copeman | | |
| 33rd | 85 | Terry Whitlock / Michael Canan | Lola T240/2 | Lynn Hanover | | |
| 34th | 72 | Jay Kjoller / Jean Kjoller | Porsche Carrera | Electrodyne | | |
| 35th | 10 | Paul Chunta / Mark Voegele | Chevrolet Corvette 350 | Climax Racing | | |
| 36th | 2 | Joe Scheckel / Jerry Lancaster | Chevrolet Corvette 355 | Cam 2 Corvette | | |
| 37th | 39 | John Higgins / Larry Connor | Porsche 911 | Foreign Exchange | | |
| 40th | 6 | Kerry Hitt / Nick Engels | Chevrolet Corvette 454 | Kerry Hitt | | |
| 43rd | 23 | Tracy Wolf / Dan Darnell | Chevrolet Monza | | | |
| 51st | 49 | Jim Moyer / Phil Pate | Chevrolet Corvette 350 | James Moyer | | |
| 55th | 67 | Joe Crevier / Koll | BMW M1 | Crevier Racing | | |
| 56th | 71 | Philip Keirn / Gail Engle | Chevrolet Corvette 427 | Keirn Garage | | |
| 57th | 91 | Chester Vincentz / Jeff Wood | Porsche 934 | Electrodyne | | |