| Pos. | No. | Driver / Nationality | Car | Entrant | Laps | Time/retired | Grp Pos | Group | Grid | Qual Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 86 | Jochen Mass (D)
Bobby Rahal (USA) |
Porsche 962 121 | Bruce Leven | 298 | 12h01m27.197 | 1 | GTP | 2 | 2:03.764 |
| 2 | 14 | Chip Robinson (USA)
Al Holbert (USA) |
Porsche 962 103 | Al Holbert | 296 | 2 | GTP | 1 | 2:03.764 | |
| 3 | 8 | Brian Redman (GB)
Chris Kneifel (USA) Elliott Forbes-Robinson (USA) |
Porsche 962 (Holbert-Fabcar) 123/HR6 | Primus Motorsports | 293 | 3 | GTP | 6 | 2:07.596 | |
| 4 | 0 | Sarel van der Merwe (ZA)
"John Winter" (D) Danny Ongais (USA) |
Porsche 962 116IM | Reinhold Joest | 281 | 4 | GTP | 4 | 2:06.713 | |
| 5 | 28 | Gregg Pickett (USA)
Tommy Riggins (USA) |
Chevrolet Camaro (Protofab) | Protofab | 281 | 1 | GTO | 15 | 2:17.589 | |
| 6 | 5 | James Weaver (GB)
Bob Akin (USA) Steve Shelton (USA) |
Porsche 962 113 | Bob Akin | 280 | 5 | GTP | 8 | 2:09.534 | |
| 7 | 67 | Bob Wollek (F)
Darin Brassfield (USA) Wally Dallenbach Jr (USA) |
Porsche 962 119 | Jim Busby | 275 | 6 | GTP | 5 | 2:06.918 | |
| 8 | 22 | Bruce Jenner (USA)
Bobby Akin Jr (USA) Tom Gloy (USA)* |
Ford Mustang (Roush) | Jack Roush | 274 | 2 | GTO | 18 | 2:19.297 | |
| 9 | 98 | Chris Cord (USA)
Juan Manuel Fangio II (RA) |
Toyota Celica AAR | Dan Gurney | 267 | 3 | GTO | 16 | 2:19.017 | |
| 10 | 42 | John Higgins (USA)
Charles Monk (CDN) Howard Cherry (USA) |
Fabcar-Porsche | John Higgins | 265 | 1 | GTP Lights | 36 | 2:24.788 | |
| 11 | 05 | Charles Morgan (USA)
Jim Rothbarth (USA) |
Argo-Mazda JM16 | R.M.Racing | 261 | 2 | GTP Lights | 40 | 2:25.948 | |
| 12 | 09 | Steve Durst (USA)
Michael Brockman (USA) Tony Belcher (USA) |
Spice-Pontiac Fiero GTP | Durst/Brockman | 261 | 3 | GTP Lights | 13 | 2:16.942 | |
| 13 | 65 | Jerry Clinton (USA)
Morris Clement (USA) Stanton Barrett (USA) |
Ford Mustang | Grey Eagle | 256 | 4 | GTO | 41 | 2:26.163 | |
| 14 | 63 | Jim Downing (USA)
John Maffucci (USA) John O'Steen (USA) |
Argo-Mazda JM19 | Jim Downing | 253 | 4 | GTP Lights | 21 | 2:20.330 | |
| NRF | 19 | Scott Schubot (USA)
Linda Ludemann (USA) Lance Jones (USA) |
Tiga-Mazda GT285 | Schubot/Ludemann | 252 | 5 | GTP Lights | 29 | 2:22.178 | |
| 16 | 74 | Paul Gentilozzi (USA)
Irv Hoerr (USA) Tom Winters (USA) |
Oldsmobile Toronado (Rocketsports) | Paul Gentilozzi | 251 | 5 | GTO | 26 | 2:21.321 | |
| 17 | 17 | Al Bacon (USA)
Bob Reed (USA) |
Mazda RX-7 (Chassis Dynamics) | Al Bacon | 245 | 1 | GTU | 43 | 2:26.963 | |
| 18 | 54 | Gary Auberlen (USA)
Bill Auberlen (USA) Karl Durkheimer (USA) |
Porsche 911 | Gary Auberlen | 244 | 2 | GTU | 54 | 2:31.577 | |
| NRF | 76 | Jack Baldwin (USA)
Eppie Wietzes (CDN) |
Chevrolet Camaro (Peerless) | Rick Hendrick | 243 | 6 | GTO | 11 | 2:15.369 | |
| 20 | 89 | Peter Uria (USA)
Larry Figaro (USA) Kyle Rathbun (USA) Jack Refenning (USA) |
Porsche 911 Carrera RSR | Peter Uria | 243 | 3 | GTU | 67 | 2:36.686 | |
| 21 | 87 | Tommy Morrison (USA)
Stuart Hayner (USA) Don Knowles (USA) Bob McConnell (USA) |
Chevrolet Corvette | Tommy Morrison | 241 | 7 | GTO | 42 | 2:26.673 | |
| 22 | 30 | Buz McCall (USA)
Walt Bohren (USA) Paul Dallenbach (USA) |
Chevrolet Camaro (Timmons) | Buz McCall | 241 | 8 | GTO | 30 | 2:23.420 | |
| 23 | 43 | Tim McAdam (USA)
Scott Overby (USA) Chip Mead (USA) Tom Pumpelly (USA)* |
Fabcar-Porsche | John Higgins | 238 | 6 | GTP Lights | 24 | 2:20.755 | |
| 24 | 75 | Tommy Kendall (USA)
Burt Kendall (USA) Max Jones (USA) |
Mazda RX-7 (Fabcar) | Clayton Cunningham | 236 | 4 | GTU | 46 | 2:27.514 | |
| 25 | 35 | Armando Gonzalez (PR)
Manuel Villa Prieto (PR) Luis Gordillo (PR) |
Royale-Porsche RP40 | Diman Racing | 235 | 7 | GTP Lights | 34 | 2:24.688 | |
| 26 | 61 | Brent O'Neill (USA)
John Lloyd (USA) Don Courtney (USA)* |
Argo-Buick JM19 | Performance Tech | 230 | 8 | GTP Lights | 19 | 2:20.289 | |
| 27 | 84 | Guy W. Church (USA)
Tom Hunt (USA) E.J.Generotti (USA) |
Mazda RX-7 | Guy W. Church | 226 | 5 | GTU | 72 | 2:39.032 | |
| 28 | 82 | Dick Greer (USA)
Mike Mees (USA) John Finger (USA) |
Mazda RX-7 (Chassis Dynamics) | Dick Greer | 225 | 6 | GTU | 63 | 2:36.123 | |
| 29 | 46 | Miguel Morejon (USA)
Herman Galeano (USA) |
Porsche 911 | Turbo Concepts | 224 | 7 | GTU | 68 | 2:37.124 | |
| 30 | 71 | Amos Johnson (USA)
Dennis Shaw (USA) |
Mazda RX-7 (Highball) | Amos Johnson | 217 | 8 | GTU | 49 | 2:28.963 | |
| 31 | 11 | Lyn St. James (USA)
Tom Gloy (USA) Bobby Akin Jr (USA)^ Ricky Rudd (USA)* |
Ford Mustang (Roush) | Jack Roush | 213 | 9 | GTO | 22 | 2:20.477 | |
| 32 | 85 | William Boyer (USA)
Steve W. Roberts (USA) |
Pontiac Firebird | Highlands Racing | 211 | 10 | GTO | 74 | 2:46.430 | |
| 33 | 00 | Charles Slater (USA)
Davide Duttinger (USA) Rudi Bartling (CDN) |
Porsche 911 | S Squared Engineering | 209 | 9 | GTU | 70 | 2:38.734 | |
| DNF | 81 | Ken Bupp (USA)
Guy W. Church (USA) Del Russo Taylor (USA) |
Chevrolet Camaro (Frings) | Ken Bupp | 205 | gearbox | GTO | 31 | 2:23.906 | |
| NC | 23 | George Petrilak (USA)
David Rosenberg (USA) Bruce MacInnes (USA) |
Argo-Buick JM19 | Motion Promotions | 201 | 9 | GTP Lights | 32 | 2:24.061 | |
| NC | 68 | Dennis Chambers (USA)
Chaunce Wallace (USA) Mike Meyer (USA)^ |
Mazda RX-7 | Dennis Chambers | 201 | 10 | GTU | 62 | 2:35.789 | |
| NC | 08 | Paul Romano (USA)
Vance Swifts (CDN) John Drew (USA) |
Mazda RX-7 | Simms/Romano | 188 | 11 | GTU | 66 | 2:36.390 | |
| NC | 52 | Ron Case (USA)
Bruce Dewey (USA) Buzz Cason (USA) Nort Northam (USA) Bill Bean (USA)* Gary Wonzer (USA)* |
Lola-Mazda T616 | Gary Wonzer | 186 | 10 | GTP Lights | 57 | 2:33.406 | |
| NC | 4 | Scott Pruett (USA)
Pete Halsmer (USA) |
Ford Mustang GTX Special (Roush) 9 | Jack Roush | 179 | GTP | 9 | 2:13.886 | ||
| DNF | 80 | Martino Finotto (I)
Ruggero Melgrati (I) Pietro Silva (I) Carlo Facetti (I)^ |
Alba-Ferrari AR6 | Gaston Andrey | 177 | gearbox | GTP Lights | 10 | 2:14.960 | |
| NC | 24 | Craig A. Rubright (USA)
Garrett Jenkins (USA) Roy Newsome (USA) |
Chevrolet Corvette | Craig A. Rubright | 165 | GTO | 64 | 2:36.132 | ||
| DNF | 90 | Bob Lee (USA)
Gary Myers (USA) Timothy S. Lee (USA) |
Buick Skyhawk | Bob Lee | 161 | GTO | 69 | 2:38.000 | ||
| NC | 50 | Henry Brosnaham (USA)
Glen Cross (USA) Jim Johnson (USA) John Hayes-Harlow (USA)^ |
Chevrolet Camaro | Henry Brosnaham | 158 | GTO | 73 | 2:41.066 | ||
| DNF | 25 | David Loring (USA)
Roger Andrey (USA) Willy Lewis (USA) |
Tiga-Ferrari GT286 | Gaston Andrey | 145 | engine | GTP Lights | 17 | 2:19.251 | |
| DNF | 44 | Paul Goral (USA)
Rusty Bond (USA) Larry Figaro (USA) |
Porsche 911 | Paul Goral | 140 | engine | GTU | 71 | 2:39.676 | |
| DNF | 49 | Carlos Munoz (USA)
Carlos Catter (USA) Joe Gonzalez (USA) |
Pontiac Firebird | Carlos Catter | 136 | GTO | 59 | 2:34.472 | ||
| DNF | 16 | Price Cobb (USA)
Vern Schuppan (AUS) Rob Dyson (USA)^ |
Porsche 962 122 | Rob Dyson | 123 | accident | GTP | 3 | 2:04.984 | |
| DNF | 60 | Steve DePuyster (USA)
Bob Schader (USA) Jim Kurz (USA) Mike Jocelyn (USA) |
Mazda RX-7 | Bob Schader | 114 | gearbox | GTU | 61 | 2:35.665 | |
| DNF | 31 | Greg Hobbs (GB)
Gary Robinson (USA) David Hobbs (GB) Alf Gebhardt (USA)^ |
Gebhardt-BMW JC853 | Alf Gebhardt | 110 | GTP Lights | 28 | 2:22.104 | ||
| DNF | 96 | Eduardo Dibos Jr (PE)
Keith Rinzler (USA) Thomas Hessert (USA)^ |
Tiga-Mazda GT286 | Thomas Hessert | 93 | GTP Lights | 53 | 2:31.336 | ||
| DNF | 47 | Doug Mills (USA)
Richard Oakley (USA) |
Mazda RX-7 | Chaunce Williams | 90 | clutch | GTU | 55 | 2:32.119 | |
| DNF | 56 | Bill Wink (USA)
Bill Martin (USA) Don Erickson (USA) Tim Evans (USA) |
Chevrolet Camaro | Bill Wink | 87 | engine | GTO | 50 | 2:29.625 | |
| DNF | 79 | Skeeter McKitterick (USA)
Ted Boady (USA) Paul Lewis (USA) Tom Winters (USA)* |
Alba-Chevrolet AR5 | Paul Gentilozzi | 86 | GTP Lights | 23 | 2:20.670 | ||
| DNF | 99 | Willy T. Ribbs (USA)
Jerrill Rice (USA) |
Toyota Celica (AAR) | Dan Gurney | 84 | overheating | GTO | 1 | 2:17.341 | |
| DNF | 40 | Uli Bieri (CDN)
Angelo Pallavicini (CH) David Murry (USA)^ |
Alba-Ferrari AR2 | Uli Bieri | 76 | engine | GTP Lights | 33 | 2:24.566 | |
| DNF | 83 | J. Craig Shafer (USA)
Joseph Maloy (USA) George R. Shafer (USA) |
Chevrolet Camaro (Banjo's Performance) | George R. Shafer | 76 | accident | GTO | 52 | 2:30.555 | |
| DNF | 51 | David Heinz (USA)
Bob Young (USA) |
Chevrolet Corvette | Quality Motorsports | 75 | GTO | 37 | 2:25.294 | ||
| DNF | 1 | A.J.Foyt (USA)
Danny Sullivan (USA) Hurley Haywood (USA) |
Porsche 962 (Holbert-Fabcar) HR4 | A.J.Foyt | 73 | accident | GTP | 7 | 2:09.141 | |
| DNF | 13 | Mark Altman (USA)
Gary Altman (USA) Tim Selby (USA) |
Porsche 914/6 | Atlman Brothers | 68 | gearbox | GTU | 60 | 2:34.767 | |
| DNF | 9 | Finley Tomlinson (USA)
Terry Loebel (USA) Richard Morgan (USA) |
Tiga-Mazda GT285 | Finco Racing | 57 | engine | GTP Lights | 25 | 2:20.780 | |
| DNF | 38 | Roger Mandeville (USA)
Kelly Marsh (USA) Don Marsh (USA)^ |
Mazda RX-7 (Chassis Dynamics) | Roger Mandeville | 56 | engine | GTO | 38 | 2:25.499 | |
| DNF | 36 | Frank Jellinek Jr (USA)
John Grooms (USA) Tom Bagley (USA)^ |
Royale-Mazda RP40 | Frank Jellinek Jr | 54 | engine | GTP Lights | 35 | 2:24.691 | |
| DNF | 26 | Del Russo Taylor (USA)
Mark Montgomery (USA) Dave Fuller (USA)^ |
Pontiac Firebird (Python) | Bob Lee | 45 | GTO | 56 | 2:32.890 | ||
| DNF | 91 | Scott Gaylord (USA)
Luis Albiza (USA) Kent Stover (USA)^ |
Oldsmobile Calais | Lucas Truck Service | 38 | engine | GTO | 51 | 2:30.465 | |
| DNF | 12 | Harold Shafer (USA)
Tom Nehl (USA) Robert Peters (CDN) |
Buick Somerset | Centurion Auto Transport | 36 | differential | GTO | 47 | 2:27.843 | |
| DNF | 01 | Jeff Kline (USA)
Don Bell (USA) |
Spice-Pontiac Fiero GTP | Spice Engineering | 31 | overheating | GTP Lights | 12 | 2:15.452 | |
| DNF | 77 | Robert Lappalainen (SF)
Kenper Miller (USA)^ |
Chevrolet Camaro (Protofab) | Brooks Fryberger | 25 | differential | GTO | 20 | 2:20.292 | |
| DNF | 72 | Jeffrey Loving (USA)
Richard Small (USA) Jan Goodman (USA)^ |
Chevrolet Camaro | Sunrise Auto | 23 | GTO | 65 | 2:36.252 | ||
| DNF | 15 | Dick Murray (USA)
Terry Visger (USA) |
Pontiac Fiero | Dick Murray | 20 | engine | GTU | 58 | 2:33.521 | |
| DNF | 70 | Tom Juckette (USA)
Richard McDill (USA) Bill McDill (USA)^ |
Chevrolet Camaro (Dillon) | Bill McDill | 19 | clutch | GTO | 45 | 2:27.241 | |
| DNF | 21 | Gene Felton (USA)
Lee Perkinson (USA)^ Matt Mnich (USA)^ |
Chevrolet Camaro (Stock Car Products) | Hoyt Overbagh | 10 | engine | GTO | 44 | 2:27.203 | |
| DNF | 88 | John Heinricy (USA)
Bob McConnell (USA)^ Bobby Carradine (USA)^ |
Chevrolet Corvette | Tommy Morrison | 9 | engine | GTO | 39 | 2:25.581 | |
| DNF | 29 | Steve Phillips (USA)
Ron Canizares (USA)^ Howard Katz (USA)^ |
Tiga-Buick GT286 | Aries Sports | 8 | electrics | GTP Lights | 27 | 2:22.040 | |
| DNF | 04 | Art Pilla (USA)
Dave White (USA)^ George Drolsom (USA)^ |
Porsche 944 | Dave White | 7 | engine | GTO | 48 | 2:28.092 | |
| DNS | 92 | Ash Tisdelle (USA)
Lance Van Every (USA) |
Chevrolet Camaro (Riggins) | Lance Van Every | engine | GTO | 2:25.050 | |||
| DNQ | 3 | Vince Gimondo (USA)
Ken Grostic (USA) Terry Wolters (USA) |
Oldsmobile Calais | Vince Gimondo | GTO | 2:40.547 | ||||
| DNQ | 48 | Gary Wonzer (USA)
Ron Case (USA) Brian Cameron (USA) Tom Cripe (USA) Bruce Dewey (USA)* |
Porsche 911 | Gary Wonzer | GTU | 2:42.122 | ||||
| DNQ | 45 | Carlos Pedrera (USA)
Dennis Dobkin (USA) |
Mazda RX-7 | Carlos Pedrera | GTU | 2:45.144 | ||||
| DNQ | 78 | Rudi Bartling (CDN)
Fritz Hochreuter (CDN) Werner Frank (USA) |
Porsche 911 | Fritz Hochreuter | GTU | 2:45.484 | ||||
| DNQ | 18 | Tim Evans (USA)
Andy Pilgrim (GB) Doug Good (USA) Terry McKenna (USA) |
PAS-Pontiac | Jeff Bietzel | GTP Lights | 2:48.369 | ||||
| DNQ | 39 | Frank Del Vecchio (USA)
Chris Thompson (USA) Kurt Mathewson (USA) |
Chevrolet Camaro (Adams) | Gary English | GTO | 2:52.077 | ||||
| DNQ | 41 | Michael Graham (USA)
Rick Burr (USA) Charles W. Bryant (USA) |
BMW 325 | B & G Racing | GTU | 2:55.554 | ||||
| DNQ | 69 | Kenneth LaGrow (USA) | Ford Mustang (Shelby) | Tom Clark | GTO | 2:59.053 | ||||
| DNQ | 10 | Jim Stricklin (USA)
Don Nooe (USA) Tim Stringfellow (USA) |
Chevrolet Corvette | Don Nooe | GTP | 3:06.169 | ||||
| DNQ | 06 | Art Cross (USA)
Gary Smith (USA) Bob Lee (USA) |
Chevrolet Monte Carlo (Trivit) | Art Cross | GTO | 3:16.493 | ||||
| DNA | 20 | John Hofstra (USA)
Mick Robinson (USA) Ron Robinson (USA) |
Porsche 914 | Gary Wonzer | GTU | |||||
| DNA | 27 | Jim Fowells (USA)
David Cowart (USA) |
Argo-Mazda JM19 | MSB Racing | GTP Lights | |||||
| DNA | 32 | Karl Keck (USA)
Mark Kennedy (USA) Dave Fuller (USA) Mark Montgomery (USA) |
Chevrolet Corvette (Pratt) | Karl Keck | GTO | |||||
| DNA | 53 | Ron Case (USA)
Vicki Smith (USA) Peter Uria (USA) Art Cross (USA) |
Lola-Mazda T616 | Gary Wonzer | GTP Lights | |||||
| DNA | 57 | Reed Kryder (USA)
Barry Kassel (USA) Paul Thomas (USA) Corky Prep (USA) |
Nissan 300ZX (Kryderacing) | Reed Kryder | GTU | |||||
| DNA | 58 | Diego Febles (PR)
Basilio Davila (PR) |
Ford Mustang | Diego Febles | GTO | |||||
| DNA | 66 | Gary English (USA)
Jerry Thompson (USA) |
Chevrolet Camaro (Adams) | Gary English | GTO |
| Winning Time: 12h01m27.197, 101.859 mph/163.927 kph |
| Fastest Lap: Chip Robinson #14 (Porsche 962), 2m05.000, 118.368 mph/190.495 kph |
| * Driver entered for car, but never drove it at meeting |
| ^ Driver practiced car, but did not race it |
| RES - Reserve (Practiced, on standy-by for start) |
| REE - Reserve Entry |
| DNA - Did Not Arrive |
| DNS - Did Not Start |
| DNF - Did Not Finish |
| DNP - Did Not Practice |
| NC - Not Classified |
| DSQ - Disqualified |
| NRF - Not Running At Finish |
| NAC - Not Accepted |
| REJ - Rejected (Did not pass scrutineering) |