| 1st | 6 | John Fitzpatrick / Brian Redman | Porsche 935 K3/80 | Dick Barbour Racing/Sachs USA | 1:20.0150 | 178.0482 |
| 2nd | 9 | Bobby Rahal / Bob Garretson | Porsche 935 K3 | Dick Barbour Racing/Apple Computers | 1:20.1200 | |
| 3rd | 18 | John Paul, Jr. / John Paul | Porsche 935 JLP-2 | JLP Racing | 1:20.9000 | |
| 4th | 0 | Ted Field / Danny Ongais | Porsche 935 K3 | Interscope Racing | 1:20.9880 | |
| 5th | 14 | Hans Heyer / Walter Röhrl | Lancia Beta Montecarlo Turbo | Lancia Corse Italia | 1:21.7250 | |
| 6th | 00 | Ted Field / Danny Ongais | Porsche 935 K3/80 | Interscope Racing | 1:22.0410 | |
| 7th | 86 | Hurley Haywood / Bruce Leven | Porsche 935/80 | Bayside Disposal Racing | 1:22.0890 | |
| 8th | 07 | Ludwig Heimrath / Johnny Rutherford | Porsche 935 | Heimrath Racing | 1:22.7800 | |
| 9th | 15 | Piercarlo Ghinzani / Bernard Darniche | Lancia Beta Montecarlo Turbo | Lancia Corse Italia | 1:22.7930 | |
| 10th | 5 | Paul Miller / Bob Akin / Kees Nierop | Porsche 935 K3 | Racing Associates | 1:24.0740 | |
| 11th | 16 | Martino Finotto / Carlo Facetti | Lancia Beta Montecarlo Turbo | Jolly Club of Milan | 1:24.2560 | |
| 12th | 09 | Dale Whittington / Preston Henn | Porsche 935 K3 | Thunderbird Racing | 1:24.4120 | |
| 13th | 80 | Maurice Carter / Richard Valentine | Chevrolet Camaro | Carter Racing | 1:26.0510 | |
| 14th | 4 | Skeeter McKitterick / Rick Mears | Porsche 935 K3 | Dick Barbour Racing/Sachs USA | 1:26.2260 | |
| 15th | 44 | Bob Tullius / Bill Adam | Triumph TR8 | JRT/Quaker State | 1:29.2460 | 159.6324 |
| 16th | 68 | Luis Mendez | Porsche 911 Carrera RSR | Hector Huerta Racing | 1:29.2780 | |
| 17th | 33 | Eppie Wietzes / Jacques Bienvenue | Chevrolet Corvette | Fifth Essence Racing | 1:29.6220 | |
| 18th | 7 | Jim Downing | Mazda RX-7 | Racing Beat | 1:30.6960 | 157.0800 |
| 19th | 69 | Klaus Bytzek / Rudy Bartling | Porsche Carrera RSR | Bytzek/Litens Automotive | 1:31.2140 | |
| 20th | 54 | Terry Herman / Albert Naon | Porsche Carrera RSR | Montura Racing | 1:31.3740 | |
| 21st | 46 | Mauricio DeNarvaez / Tony Garcia | Porsche 911 Carrera RSR | DeNarvaez Enterprises | 1:31.3900 | |
| 22nd | 47 | Brad Frisselle / Roger Mandeville | Mazda RX-7 | Brad Frisselle Racing | 1:31.8270 | |
| 23rd | 36 | Ludwig Heimrath, Jr. / Brian Hardacre / Jon Reski | Porsche Carrera | Climax Racing | 1:32.1690 | |
| 24th | 17 | John Morton / Jeff Kline / Walt Bohren | Mazda RX-7 | Racing Beat | 1:32.4130 | |
| 25th | 95 | Fred Stiff | Datsun 240Z | NTS Racing | 1:33.2000 | |
| 26th | 62 | Bill Koll / Jim Cook | Porsche 911 | Koll Motor Sport | 1:33.8010 | |
| 27th | 48 | Phil Currin / John Carusso | Chevrolet Corvette | Dynasales | 1:33.8710 | |
| 28th | 73 | Ernesto Soto / Pierre Honegger | Mazda RX-7 | Z & W Enterprises | 1:33.8720 | |
| 29th | 23 | Dick Davenport / Frank Carney | Datsun 280ZX | Raytown Datsun | 1:34.3040 | |
| 30th | 72 | Murray Edwards / Craig Carter | Chevrolet Corvette | Murray Edwards | 1:34.7050 | |
| 31st | 50 | Fritz Hochreuter / Rainer Brezinka / Norm Ridgely | Porsche 911 | Fritz Hochreuter | 1:38.6710 | |
| 32nd | 22 | Peter Aschenbrenner / Gary Hirsch | Porsche 914/6 | Alps Restoration | 1:40.2990 | |
| 33rd | 34 | George Drolsom / Hugh Davenport | Porsche 911 | Drolsom Racing | 1:43.4370 | |
| 34th | 42 | Peter Bulkowski / Bruce Kulczyk | Triumph TR8 | Bruce Kulczyk | 1:44.6660 | |
| 35th | 02 | Paul Canary / Jim Sanborn | Chevrolet Corvette | Paul Canary | 1:46.6060 | |