| 1st | 71 | Bobby Rahal | Porsche 935 K3 | Dick Barbour Racing | 1:51.6380 |
| 2nd | 30 | Reinhold Jöst / Gianpiero Moretti | Porsche 935J | Electrodyne Racing | 1:52.0000 |
| 3rd | 31 | Hans Heyer / Riccardo Patrese | Lancia Beta Montecarlo Turbo | Lancia Corse | 1:52.2000 |
| 4th | 13 | Randolph Townsend / Harald Grohs | Porsche 935 | Andial Racing | 1:52.4000 |
| 5th | 0 | Ted Field / Danny Ongais | Porsche 935 K3/80 | Interscope Racing | 1:53.0000 |
| 6th | 6 | John Fitzpatrick / Brian Redman | Porsche 935 K3/80 | Dick Barbour Racing | 1:53.1480 |
| 7th | 20 | Hans-Joachim Stuck | BMW M1 | BMW North America | 1:53.2000 |
| 8th | 85 | Don Whittington / Hurley Haywood / Dale Whittington | Porsche 935 K3 | Whittington Brothers Racing | 1:53.4080 |
| 9th | 32 | Michele Alboreto / Eddie Cheever | Lancia Beta Montecarlo Turbo | Lancia Corse | 1:54.0000 |
| 10th | 73 | John Paul, Jr. / John Paul / Preston Henn | Porsche 935 JLP-2 | JLP Racing | 1:55.1440 |
| 11th | 19 | Chris Cord / Jim Adams | Chevrolet Monza | Chris Cord | 1:55.5000 |
| 12th | 33 | Martino Finotto / Piercarlo Ghinzani | Lancia Beta Montecarlo Turbo | Jolly Club | 1:56.6000 |
| 13th | 07 | Ludwig Heimrath / Johnny Rutherford | Porsche 935 | Heimrath Racing | 1:58.0610 |
| 14th | 69 | Roy Woods / Bob Akin / Charles Mendez | Porsche 935 K3 | Racing Associates | 1:58.4000 |
| 15th | 80 | Maurice Carter / Tony DeLorenzo | Chevrolet Camaro | Maurice Carter | 1:58.5440 |
| 16th | 25 | Kenper Miller / Dave Cowart | BMW M1 | Red Lobster Racing | 1:59.8280 |
| 17th | 5 | Skeeter McKitterick / Charles Mendez | Porsche 935 K3 | Racing Associates | 2:00.3520 |
| 18th | 98 | John Bauer / Larry Green | Porsche 911 SC | Green Racing | 2:04.4000 |
| 19th | 68 | Dave Heinz / Bob Nagel / Richard Valentine | Chevrolet Corvette | USA Racing | 2:06.0400 |
| 20th | 57 | Monte Shelton / Bruce Leven | Porsche 911 SC | Porsche-Audi Northwest | 2:07.3000 |
| 21st | 38 | Bob Fryer | AMC Javelin | University of Pittsburgh | 2:07.3000 |
| 22nd | 28 | Marty Hinze / Dale Whittington | Porsche 935 | Marty Hinze | 2:07.7000 |
| 23rd | 10 | Bob Young / Bob Lazier | Chevrolet Camaro II | Rocky Mountain Performance | 2:08.5270 |
| 24th | 9 | Bob Raub / Roy Woods | Chevrolet Camaro II | Rocky Mountain Performance | 2:09.1350 |
| 25th | 60 | John Brandt | Chevrolet Corvette | Atlas Van Lines | 2:10.3000 |
| 26th | 00 | Ted Field / Danny Ongais | Porsche 935/77A | Interscope Racing | 2:10.4000 |
| 27th | 46 | Catherine Kizer / Jack Broomall | Chevrolet Corvette | Buist/Syfert | 2:10.6000 |
| 28th | 83 | Herb Forrest / Craig Leifheit | Chevrolet Corvette | Forrest/Leifheit | 2:10.6340 |
| 29th | 64 | Bob Baechle / David Laughlin | Chevrolet Corvette | Auto Barn | 2:11.3000 |
| 30th | 23 | Bob Zulkowski / Gary Pullyblank | Porsche 914/6 | Metal Craft Racing | 2:12.1990 |
| 31st | 93 | Michael Oleyar / Bill Craine | Chevrolet Corvette | Little Foreign Car Shop | 2:12.8110 |
| 32nd | 36 | Bruce Jenner / Chester Vincentz / Bob Garretson | Porsche 934 | Electrodyne Racing | 2:12.9000 |
| 33rd | 26 | Robert Overby / Frank Harmstad | Porsche 911 SC Targa | Robert Overby | 2:14.7000 |
| 34th | 52 | David Schuler / Robert Schuler | Datsun 280ZX | Fred Schuler | 2:14.8000 |
| 35th | 11 | David Wolpert / Tom Aquilante / Wade White | Chevrolet Corvette | Aquilante/Wolpert | 2:16.0010 |
| 36th | 16 | Tom Roberts / Paul Schulte | Chevrolet Camaro | Tom's Mechanical Emporium | 2:17.9310 |
| 37th | 81 | Philip Keirn / Ed Errington | Chevrolet Corvette | Philip Keirn | 2:18.3460 |
| 38th | 4 | Jürgen Barth / Volkert Merl | Porsche 935 K3 | Dick Barbour Racing | no time |
| 39th | 3 | Jim Busby / Rick Mears / Peter Gregg | Porsche 935 M16 | Jim Busby | no time |
| 40th | 18 | David Kicak / Tom Eastham | Chevrolet Corvette | Tom Rynone | no time |