(All Session Laps)
| Pos. | No. | Drivers | Car | Entrant | All Best | Q Time |
| 1st | 1 | Paul, Jr. / *Redman | Lola T600 Chevrolet | JLP Racing | 1:24.646 | 1:24.6460 |
| 2nd | 2 | Fitzpatrick / *Hobbs | Porsche 935 K4 | John Fitzpatrick Racing | 1:25.688 | 1:25.6880 |
| 3rd | 00 | Ongais / *Field | Lola T600 Chevrolet | Interscope Racing | 1:25.723 | 1:25.7230 |
| 4th | 41 | Holbert / *Trueman | March 83G Chevrolet | Holbert Racing | 1:25.776 | 1:25.7760 |
| 5th | 09 | Wollek / *Andretti | Porsche 935 L | Henn's Swap Shop Racing | 1:26.214 | 1:26.2140 |
| 6th | 4 | Cord / *Adams | Lola T600 Chevrolet | Chris Cord Racing/Rayfin | 1:26.429 | 1:26.4290 |
| 7th | 3 | de Villota / Sneva | Grid Plaza S1 Ford | Grid Motor Racing | 1:26.640 | 1:26.6400 |
| 8th | 0 | Ongais / Field | Lola T600 Chevrolet Turbo | Interscope Racing | 1:26.681 | 1:26.6810 |
| 9th | 12 | Mass / *Bell | Porsche 935/78-81 | John Fitzpatrick Racing | 1:27.095 | 1:27.0950 |
| 10th | 06 | Ludwig / *Rahal | Ford Mustang Turbo | Zakspeed Roush | 1:27.214 | 1:27.2140 |
| 11th | 44 | Tullius / *Adam | Jaguar XJR-5 | Group 44 | 1:27.261 | 1:27.2610 |
| 12th | 10 | Kent-Cooke / Grohs | Lola T600 Chevrolet | Cooke Racing | 1:27.833 | 1:27.8330 |
| 13th | 88 | Needell / *Holmes | March 83G Chevrolet | Motorsport Marketing | 1:28.407 | 1:28.4070 |
| 14th | 30 | Moretti / *van der Merwe | Porsche 935/78-81 | Momo Corse | 1:28.711 | 1:28.7110 |
| 15th | 6 | Brabham / *Coconis | Ford Mustang Turbo | Zakspeed Roush | 1:28.728 | 1:28.7280 |
| 16th | 5 | Whittington / *Akin | Porsche 935 K3/80 | Bob Akin Motor Racing | 1:29.682 | 1:29.6820 |
| 17th | 22 | Bundy / *St. James | Nimrod NRA/C2 Aston Martin | Nimrod Racing | 1:30.116 | 1:30.1160 |
| 18th | 45 | Smith / *Felton | Pontiac Firebird | Stratagraph | 1:30.217 | 1:30.2170 |
| 19th | 54 | Garcia / *Naon | Mirage M12 Ford | Montura/Conte Racing | 1:30.539 | 1:30.5390 |
| 20th | 9 | Whittington / *Henn / *Henn | Porsche 935 K3 | Henn's Swap Shop Racing | 1:31.317 | 1:31.3170 |
| 21st | 53 | Young / *Gregg | March-BMW M1 Chevrolet | Bob Gregg Racing | 1:31.342 | 1:31.3420 |
| 22nd | 11 | Gonzalez / *Olson | Nimrod NRA/C2 Aston Martin | Nimrod Racing | 1:31.621 | 1:31.6210 |
| 23rd | 39 | Gunn / *Londono | Phoenix JG1 Chevrolet | John Gunn | 1:32.960 | 1:32.9600 |
| 24th | 46 | DeNarvaez / *Salak | Porsche 935J | JLP Racing | 1:33.958 | 1:33.9580 |
| 25th | 35 | "Fomfor" / *Kregsa | BMW 320i | Francis Miguel | 1:34.541 | 1:34.5410 |
| 26th | 16 | Hinze / *Lanier | March 82G Chevrolet | Marty Hinze Racing | 1:35.254 | 1:35.2540 |
| 27th | 77 | Bohren / *Honegger | Mazda GTP | Z & W Enterprises Racing | 1:36.312 | 1:36.3120 |
| 28th | 68 | Valentine / *Markle | Chevrolet Corvette | USA Racing | 1:37.902 | 1:37.9020 |
| 29th | 69 | Cruz / *Gonzalez | Porsche 934/5 | Hiram Cruz | 1:38.814 | 1:38.8140 |
| 30th | 8 | Perella / *Gottfried | Porsche 935 JLP-3 | JLP Racing | 1:41.545 | 1:41.5450 |
| 31st | 86 | Redman / *Haywood | Lola T600 Porsche Turbo | Bayside Disposal Racing | 1:45.090 | 1:45.0900 |
| 32nd | 25 | Miller / *Cowart | March 82G Porsche | Red Lobster Racing | 1:45.244 | 1:45.2440 |
| 33rd | 74 | Taylor / *Figaro | Chevron GTP Buick | Mark Wagoner | 1:48.122 | 1:48.1220 |
Entered cars that did not arrive:
| No. | Drivers | Car | Entrant |
| 7 | Belcher / Stommelen | Rondeau M382 Chevrolet | Belcher Racing |
| 18 | Rodriguez / St. James | Porsche 935 JLP-4 | JLP Racing |
| 24 | Speer / Madren | Porsche 935 JLP-2 | Pegasus III Racing |
| 27 | Jones / Brock | Chevrolet Monza | Cobra Racing |
| 43 | Wonzer / Bean | Chevrolet GTP | Gary Wonzer |
| 83 | | March 83G Porsche | March Engineering |
| 90 | | Porsche 935 | Garretson Enterprises |
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