| 1st | 70 | Rolf Stommelen / Dick Barbour / Paul Newman | Porsche 935 | Dick Barbour Performance | 1:50.3540 |
| 2nd | 94 | Don Whittington / Klaus Ludwig / Bill Whittington | Porsche 935/77A | Whittington Bros/Kremer Racing | 1:50.7630 |
| 3rd | 85 | Peter Gregg / Hurley Haywood / Bruce Leven | Porsche 935 | Bayside Disposal Racing | 1:52.6570 |
| 4th | 20 | Elliot Forbes-Robinson / Randolph Townsend / Brett Lunger | Porsche 935 | Andial Porsche Service | 1:53.2790 |
| 5th | 09 | Rick Mears | Porsche 935/77A | Bayside Disposal Racing | 1:53.6770 |
| 6th | 0 | Ted Field / Danny Ongais | Porsche 935/79 | Interscope Racing | 1:54.0190 |
| 7th | 18 | John Paul / Al Holbert | Porsche 935 JLP-1 | J.L.P. Racing, Inc. | 1:54.4180 |
| 8th | 95 | Bill Whittington / Brian Redman / Johnny Rutherford | Porsche 935/79 | Whittington Brothers | 1:56.6510 |
| 9th | 71 | Rob McFarlin / Roy Woods / Bob Akin | Porsche 935 | Dick Barbour Performance | 1:57.3800 |
| 10th | 6 | Charles Mendez / Paul Miller | Porsche 935 | CMR Inc. | 1:57.6540 |
| 11th | 7 | Ludwig Heimrath / Carlos Moran | Porsche 935 | Heimrath Racing | 1:57.8060 |
| 12th | 19 | Chris Cord | Chevrolet Monza 350 | Chris Cord Racing | 1:58.4340 |
| 13th | 3 | Jim Busby / Manfred Winkelhock | BMW M1 | BMW of North America and Munich | 1:59.6180 |
| 14th | 80 | Maurice Carter / Tony DeLorenzo | Chevrolet Camaro | Maurice C. Carter | 1:59.7260 |
| 15th | 57 | Neil Shelton / Monte Shelton | Porsche 935 | Monte's Motor Co. | 2:00.0380 |
| 16th | 72 | Skeeter McKitterick / Buzz Marcus / Bob Garretson | Porsche 935 | Dick Barbour Performance | 2:00.6840 |
| 17th | 13 | Hal Shaw, Jr. / Gary Belcher | Porsche 935 | Hal Shaw Racing | 2:01.5580 |
| 18th | 5 | Kenper Miller / Dave Cowart | BMW 3.5 CSL | K.W.M. Racing | 2:02.6130 |
| 19th | 66 | Tuck Thomas / Norm Ridgely / Robert Kirby | Porsche 935 | Stanton/Barbour | 2:02.7770 |
| 20th | 44 | Bob Tullius / Brian Fuerstenau | Triumph TR8 | JRT/Quaker State | 2:06.1590 |
| 21st | 90 | Thomas Rynone / Neil Wiernicki / Michael Wiernicki | Chevrolet Corvette 427 | Rynone Industries | 2:06.5220 |
| 22nd | 11 | Daniel Muniz | Chevrolet Camaro II | Oftedahl Racing | 2:07.3540 |
| 23rd | 43 | Frank Joyce / Tom Frank | Chevrolet Corvette C3 454 | Phantom Racing | 2:07.3700 |
| 24th | 38 | Bonky Fernandez / Tato Ferrer | Porsche Carrera RSR | Boricua Motors Corp. | 2:07.9360 |
| 25th | 97 | Roger Schramm / Werner Frank | Porsche Carrera RSR | Framm Promotions | 2:09.0990 |
| 26th | 10 | John Huber / Daniel Muniz / Miguel Muniz | Chevrolet Camaro II | Oftedahl Racing | 2:09.1120 |
| 27th | 47 | Jon McKnight / Doug Lutz | Porsche 911 Carrera RSR | Doug Lutz | 2:10.3520 |
| 28th | 98 | Larry Green / John Bauer | Porsche 911 Carrera RSR | Larry Green/Bauer Racing | 2:12.5960 |
| 29th | 15 | James Mancuso | Chevrolet Corvette 355 | Motion Merchants | 2:11.6750 |
| 30th | 30 | Bob Fryer / Ed Lowther | AMC Javelin | University of Pittsburgh Auto Racing Team | 2:12.5960 |
| 31st | 65 | Al Salerno | Chevrolet Corvette 454 | Alan F. Salerno | 2:13.5060 |
| 32nd | 52 | Robert Schuler / David Schuler | Datsun 280Z | Fred Schuler, Inc. | 2:13.7190 |
| 33rd | 23 | Bob Zulkowski / Bernie Storc | Porsche 914/6 | Metal Craft Racing | 2:14.5990 |
| 34th | 93 | Michael Oleyar | Chevrolet Corvette 454 | E. F. Miller & Co./Little Foreign Car Shop | 2:14.8920 |
| 35th | 37 | Paul Schulte / John Cleveland | Chevrolet Corvette String Ray 350 | Kassel Auto Parts | 2:15.2890 |
| 36th | 16 | Neil Kassel / Tom Roberts | Chevrolet Camaro 350 | Tom's Mechanical Emporium/Kassel Auto Parts | 2:15.7390 |
| 37th | 51 | Tom Aquilante | Chevrolet Corvette 350 | Thomas Aquilante | 2:16.2100 |
| 38th | 25 | William Maier / Art Siri, Jr. / Ed Hinchliff | Ford Mustang Mach 1 302 | Maier Racing, Inc. | 2:16.6040 |
| 39th | 29 | Hoyt Overbagh / Billy Hagan | Chevrolet Monza 355 | Stratagraph, Inc. | 2:18.3010 |
| 40th | 21 | John Wood / Mario Gomez / Carl Shafer | Chevrolet Camaro II | Oftedahl Racing | 2:16.9070 |
| 41st | 77 | Bruce Jennings / Bob Beasley / Bill Bean | Porsche 911 S | Bruce Jennings | no time |
| 42nd | 55 | Alan Howes / David Sturtevant | Porsche Carrera | Intrepid Design Inc. | no time |
| 43rd | 64 | Bob Baechle | Chevrolet Corvette 427 | Endurance Racing Enterprises | no time |
| 44th | 92 | Sam Feinstein / Michael Oleyar / Nick Engels | Chevrolet Corvette 454 | E. F. Miller & Co./Wayne County Auto | no time |