# 24 Heures de Daytona 1985

Les 24 Heures de Daytona 1985 (officiellement appelé le 1985 Sunbank Daytona 24 Hours ), disputées sur les 2 février 1985 et 3 février 1985 sur le Daytona International Speedway sont la vingt-troisième édition de cette épreuve, la dix-neuvième sur un format de vingt-quatre heures, et la première manche du Championnat IMSA GT 1985.

## Engagés

La liste officielle des engagés était composée de 108 voitures. 89 ont participé aux essais dont 33 en GTP, 3 en GTP Lights, 31 en GTO et 22 en GTU.

## Course

Voici le classement provisoire au terme de la course$^,$$^,$.
* Les vainqueurs de chaque catégorie sont signalés par un fond jauni.
* Pour la colonne Pneus, il faut passer le curseur au-dessus du modèle pour connaître le manufacturier de pneumatiques.
| Pos. | Classe | N° | Écurie | Pilotes | Châssis | Pneus | Tours | Temps |
| Pos. | Classe | N° | Écurie | Pilotes | Moteur | Pneus | Tours | Temps |
| 1 | GTP | 8 | Henn's Swap Shop Racing | A. J. Foyt Bob Wollek Al Unser Thierry Boutsen | Porsche 962 | G | 703 | 24 h 01 min 36 s 240 |
| 1 | GTP | 8 | Henn's Swap Shop Racing | A. J. Foyt Bob Wollek Al Unser Thierry Boutsen | Porsche Type 962/71 3,2 l Flat-6 Turbo K36 | G | 703 | 24 h 01 min 36 s 240 |
| 2 | GTP | 14 | Holbert Racing | Al Holbert Al Unser Jr. Derek Bell | Porsche 962 | G | 686 | + 17 tours |
| 2 | GTP | 14 | Holbert Racing | Al Holbert Al Unser Jr. Derek Bell | Porsche Type 962/71 3,2 l Flat-6 Turbo K36 | G | 686 | + 17 tours |
| 3 | GTP | 67 | BFGoodrich ( Busby Racing) | Jim Busby (de) Rick Knoop (de) Jochen Mass | Porsche 962 | BF | 674 | + 29 tours |
| 3 | GTP | 67 | BFGoodrich ( Busby Racing) | Jim Busby (de) Rick Knoop (de) Jochen Mass | Porsche Type 962/71 3,2 l Flat-6 Turbo K36 | BF | 674 | + 29 tours |
| 4 | GTP | 5 | Bob Akin Motor Racing | Hans-Joachim Stuck Bob Akin Paul Miller (de) | Porsche 962 | G | 670 | + 33 tours |
| 4 | GTP | 5 | Bob Akin Motor Racing | Hans-Joachim Stuck Bob Akin Paul Miller (de) | Porsche Type 962/71 3,2 l Flat-6 Turbo K36 | G | 670 | + 33 tours |
| 5 | GTP | 7 | Bob Akin Motor Racing | Jim Mullen Kees Nierop (en) Ray McIntyre | Porsche 935 | G | 668 | + 35 tours |
| 5 | GTP | 7 | Bob Akin Motor Racing | Jim Mullen Kees Nierop (en) Ray McIntyre | Porsche Type 930/80 3,2 l Flat-6 Turbo | G | 668 | + 35 tours |
| 6 | GTP | 2 | Leon Bros. Racing | Skeeter McKitterick (de) Terry Wolters (de) Art Leon | March 84G | G | 654 | + 49 tours |
| 6 | GTP | 2 | Leon Bros. Racing | Skeeter McKitterick (de) Terry Wolters (de) Art Leon | Chevrolet 5,8 l V8 Atmo | G | 654 | + 49 tours |
| 7 | GTP | 1 | Leon Bros. Racing | Bill Whittington Randy Lanier (en) Al Leon | March 85G | | 652 | + 51 tours |
| 7 | GTP | 1 | Leon Bros. Racing | Bill Whittington Randy Lanier (en) Al Leon | Porsche Type 962 Flat-6 Turbo | | 652 | + 51 tours |
| 8 | GTO | 65 | Roush Racing | Wally Dallenbach Jr. John Jones (en) Doc Bundy (en) | Ford Mustang | G | 637 | + 66 tours |
| 8 | GTO | 65 | Roush Racing | Wally Dallenbach Jr. John Jones (en) Doc Bundy (en) | Ford 6,0 l V8 Atmo | G | 637 | + 66 tours |
| 9 | GTP | 9 | Personalized Autohaus | Jack Newsum Wayne Baker Chip Mead (en) Ren Tilton | Porsche 935 | | 624 | + 79 tours |
| 9 | GTP | 9 | Personalized Autohaus | Jack Newsum Wayne Baker Chip Mead (en) Ren Tilton | Porsche Type 930/80 3,2 l Flat-6 Turbo | | 624 | + 79 tours |
| 10 | Lights | 93 | Mid-O/Rusty Jones | Kelly Marsh Ron Pawley Don Marsh | Argo JM16 | G | 602 | + 101 tours |
| 10 | Lights | 93 | Mid-O/Rusty Jones | Kelly Marsh Ron Pawley Don Marsh | Mazda 13B 1,3 l 2-Rotor | G | 602 | + 101 tours |
| 11 | GTO | 53 | Mandeville Auto-Tech | Danny Smith Tom Waugh Diego Febles (de) | Mazda RX-7 | | 599 | + 104 tours |
| 11 | GTO | 53 | Mandeville Auto-Tech | Danny Smith Tom Waugh Diego Febles (de) | Mazda Rotatif | | 599 | + 104 tours |
| 12 | GTU | 71 | Team Highball | Amos Johnson (de) Jack Dunham Yojiro Terada | Mazda RX-7 | | 599 | + 104 tours |
| 12 | GTU | 71 | Team Highball | Amos Johnson (de) Jack Dunham Yojiro Terada | Mazda Rotatif | | 599 | + 104 tours |
| 13 | Lights | 63 | RGP 500 Racing | Jim Downing John Maffucci Yoshimi Katayama | Argo JM16 | | 599 | + 104 tours |
| 13 | Lights | 63 | RGP 500 Racing | Jim Downing John Maffucci Yoshimi Katayama | Mazda 13B 1,3 l 2-Rotor | | 599 | + 104 tours |
| 14 | GTO | 09 | 901 Shop | Mike Schaefer Peter Uria Jack Refenning Larry Figaro | Porsche 911 Carrera RSR | | 586 | + 107 tours |
| 14 | GTO | 09 | 901 Shop | Mike Schaefer Peter Uria Jack Refenning Larry Figaro | Porsche 3,2 l Flat-6 Atmo | | 586 | + 107 tours |
| 15 | GTO | 90 | Road Circuit Tech | Les Delano Andy Petery (de) Tommy Riggins | Pontiac Firebird | | 578 | + 125 tours |
| 15 | GTO | 90 | Road Circuit Tech | Les Delano Andy Petery (de) Tommy Riggins | Pontiac Atmo | | 578 | + 125 tours |
| 16 | GTO | 21 | Gopher Motion | Steve Cohen Don Walker William Gelles | Ferrari 512 BB LM | | 567 | + 136 tours |
| 16 | GTO | 21 | Gopher Motion | Steve Cohen Don Walker William Gelles | Ferrari 5,0 l V12 Atmo | | 567 | + 136 tours |
| 17 | GTP | 6 | Morgan Performance | Charles Morgan Bill Alsup (en) Jim Miller | Royale RP40 | G | 564 | + 139 tours |
| 17 | GTP | 6 | Morgan Performance | Charles Morgan Bill Alsup (en) Jim Miller | Buick 3,0 l V6 Atmo | G | 564 | + 139 tours |
| 18 | GTU | 42 | Mike Meyer/Daffy SWR | Scott Pruett Paul Lewis (en) Joe Varde (en) | Mazda RX-7 | | 558 | + 145 tours |
| 18 | GTU | 42 | Mike Meyer/Daffy SWR | Scott Pruett Paul Lewis (en) Joe Varde (en) | Mazda Rotatif | | 558 | + 145 tours |
| 19 | GTU | 99 | All American Racers | Chris Cord (en) Dennis Aase (en) | Toyota Celica | | 533 | + 170 tours |
| 19 | GTU | 99 | All American Racers | Chris Cord (en) Dennis Aase (en) | Toyota Atmo | | 533 | + 170 tours |
| 20 | GTO | 92 | OMR Engines | Chris Gennone Fern Prego Hoyt Overbagh Lewis Fuller | Chevrolet Camaro | | 516 | + 187 tours |
| 20 | GTO | 92 | OMR Engines | Chris Gennone Fern Prego Hoyt Overbagh Lewis Fuller | Chevrolet 6,0 l V8 Atmo | | 516 | + 187 tours |
| 21 | GTP | 11 | Kendall Racing | Chuck Kendall Peter Fitzgerald John Hotchkis (de) | Porsche 935 | | 512 | Piston brulé |
| 21 | GTP | 11 | Kendall Racing | Chuck Kendall Peter Fitzgerald John Hotchkis (de) | Porsche 3,2 l Flat-6 Turbo | | 512 | Piston brulé |
| 22 | GTP | 30 | Momo Corse | Giampiero Moretti Jim Trueman (en) Massimo Sigala | Alba AR5 | G | 505 | Incendie |
| 22 | GTP | 30 | Momo Corse | Giampiero Moretti Jim Trueman (en) Massimo Sigala | Ford Cosworth DFL 3,9 l V8 Atmo | G | 505 | Incendie |
| 23 | Lights | 37 | Aerex Manufacturing | Peter Welter Nick Nicholson Tom Burdsall | Tiga GT284 | | 501 | + 202 tours |
| 23 | Lights | 37 | Aerex Manufacturing | Peter Welter Nick Nicholson Tom Burdsall | Mazda 13B 1,3 l 2-Rotor | | 501 | + 202 tours |
| 24 | GTO | 96 | Allan Moffat Racing (en) | Allan Moffat Gregg Hansford (en) Kevin Bartlett (en) Peter McCloud | Mazda RX-7 | | 482 | + 221 tours |
| 24 | GTO | 96 | Allan Moffat Racing (en) | Allan Moffat Gregg Hansford (en) Kevin Bartlett (en) Peter McCloud | Mazda Rotatif | | 482 | + 221 tours |
| 25 | GTU | 94 | 49th Star Racing | William Pfalf Skip Winfree Wally Hopkins | Porsche 911 | | 477 | + 226 tours |
| 25 | GTU | 94 | 49th Star Racing | William Pfalf Skip Winfree Wally Hopkins | Porsche 3,0 l Flat-6 Atmo | | 477 | + 226 tours |
| 26 | GTO | 73 | Wolf Engines | Clark Howey Dale Koch Tracy Wolf | Chevrolet Camaro | | 467 | + 236 tours |
| 26 | GTO | 73 | Wolf Engines | Clark Howey Dale Koch Tracy Wolf | Chevrolet 6,0 l V8 Atmo | | 467 | + 236 tours |
| 27 | GTO | 78 | Raul Garcia | Raul Garcia Eugenio Matienzo | Pontiac Firebird | | 454 | + 249 tours |
| 27 | GTO | 78 | Raul Garcia | Raul Garcia Eugenio Matienzo | Pontiac Atmo | | 454 | + 249 tours |
| 28 | GTP | 3 | Pegasus Racing | Bobby Allison Wayne Pickering Ken Madren | March 84G | | 437 | Boite de viteses |
| 28 | GTP | 3 | Pegasus Racing | Bobby Allison Wayne Pickering Ken Madren | Buick 3,4 l V6 Turbo | | 437 | Boite de viteses |
| 29 | GTO | 83 | K&P Racing | William Wessel Robert Whitaker Mark Kennedy Karl Keck | Chevrolet Corvette | | 436 | + 267 tours |
| 29 | GTO | 83 | K&P Racing | William Wessel Robert Whitaker Mark Kennedy Karl Keck | Chevrolet V8 Atmo | | 436 | + 267 tours |
| 30 | GTO | 43 | Starved Rock Lodge | Rusty Schmidt Scott Schmidt Max Schmidt | Chevrolet Corvette | | 413 | + 290 tours |
| 30 | GTO | 43 | Starved Rock Lodge | Rusty Schmidt Scott Schmidt Max Schmidt | Chevrolet V8 Atmo | | 413 | + 290 tours |
| 31 | GTO | 35 | Team Dallas | M. L. Speer Bobby Hefner Jack Griffin | Porsche 911 Carrera RSR | | 395 | Fuite d'huile |
| 31 | GTO | 35 | Team Dallas | M. L. Speer Bobby Hefner Jack Griffin | Porsche 3,2 l Flat-6 Atmo | | 395 | Fuite d'huile |
| 32 | GTP | 15 | Kalagian Racing | John Kalagian John Lloyd Tom Grunnah | March 84G | H | 394 | Suspension |
| 32 | GTP | 15 | Kalagian Racing | John Kalagian John Lloyd Tom Grunnah | Chevrolet V8 Atmo | H | 394 | Suspension |
| 33 | GTP | 33 | Bo-And Racing | Richard Anderson Bard Boand Mike Brummer | Lola T600 | | 373 | Suspension |
| 33 | GTP | 33 | Bo-And Racing | Richard Anderson Bard Boand Mike Brummer | Chevrolet V8 Atmo | | 373 | Suspension |
| 34 | GTO | 22 | Walter Johnston | Del Russo Taylor John Hayes-Harlow Bob Lee | Pontiac Firebird | | 351 | + 352 tours |
| 34 | GTO | 22 | Walter Johnston | Del Russo Taylor John Hayes-Harlow Bob Lee | Pontiac Atmo | | 351 | + 352 tours |
| 35 | GTU | 49 | Conrad Racing | Albert Naon Jr. Dennis Vitolo (en) Fernando Garcia | Porsche 911 | | 336 | + 367 tours |
| 35 | GTU | 49 | Conrad Racing | Albert Naon Jr. Dennis Vitolo (en) Fernando Garcia | Porsche 3,0 l Flat-6 Atmo | | 336 | + 367 tours |
| 36 | GTP | 45 | Conte Racing | John Paul Jr. Bill Adam (en) Whitney Ganz | March 85G | G | 330 | Suspension |
| 36 | GTP | 45 | Conte Racing | John Paul Jr. Bill Adam (en) Whitney Ganz | Buick V6 Turbo | G | 330 | Suspension |
| 37 | GTO | 80 | Lindley Motor Ltd. | Neil Bonnett (en) Jim Derhaag Les Lindley | Chevrolet Camaro | | 295 | Abendaon |
| 37 | GTO | 80 | Lindley Motor Ltd. | Neil Bonnett (en) Jim Derhaag Les Lindley | Chevrolet 6,0 l V8 Atmo | | 295 | Abendaon |
| 38 | GTO | 72 | Centurion Auto Trans | Harold Shafer Tom Nehl Kent Painter | Chevrolet Camaro | | 283 | Culasse |
| 38 | GTO | 72 | Centurion Auto Trans | Harold Shafer Tom Nehl Kent Painter | Chevrolet 6,0 l V8 Atmo | | 283 | Culasse |
| 39 | GTO | 29 | Southern Racing Promo | Gary Baker (en) Robin McCall (en) Joe Ruttman (en) | Chevrolet Corvette | | 281 | Abandon |
| 39 | GTO | 29 | Southern Racing Promo | Gary Baker (en) Robin McCall (en) Joe Ruttman (en) | Chevrolet V8 Atmo | | 281 | Abandon |
| 40 | GTP | 0 | Kreepy Krauly Racing | Sarel van der Merwe Tony Martin (en) Ian Scheckter | March 84G | Y | 260 | Pneu |
| 40 | GTP | 0 | Kreepy Krauly Racing | Sarel van der Merwe Tony Martin (en) Ian Scheckter | Porsche Type 935/76 2,6 l Flat-6 Turbo | Y | 260 | Pneu |
| 41 | GTO | 38 | Mandeville Auto-Tech | Takashi Yorino Logan Blackburn Roger Mandeville | Mazda RX-7 | | 220 | Echapement |
| 41 | GTO | 38 | Mandeville Auto-Tech | Takashi Yorino Logan Blackburn Roger Mandeville | Mazda Rotatif | | 220 | Echapement |
| 42 | GTU | 81 | Mosler Racing | Steve Alexander Joe Hill George Alderman | Ferrari 308 GTB | | 219 | Abandon |
| 42 | GTU | 81 | Mosler Racing | Steve Alexander Joe Hill George Alderman | Ferrari F106AB 3,0 l V8 Atmo | | 219 | Abandon |
| 43 | GTO | 89 | Scorpio Racing | "Jamsal" Eduardo Galdamez "Anbagua" | Porsche 934 | | 217 | Problèmes électrique |
| 43 | GTO | 89 | Scorpio Racing | "Jamsal" Eduardo Galdamez "Anbagua" | Porsche Type 962 3,0 l Flat-6 Turbo | | 217 | Problèmes électrique |
| 44 | GTU | 55 | Preston & Son Enterprises | Robert Peters George Schwarz Andre Schwarz | Mazda RX-7 | | 214 | Abandon |
| 44 | GTU | 55 | Preston & Son Enterprises | Robert Peters George Schwarz Andre Schwarz | Mazda Rotatif | | 214 | Abandon |
| 45 | GTU | 76 | Malibu Grand Prix | Jack Baldwin (en) Ira Young Jeff Kline | Mazda RX-7 | | 205 | Abandon |
| 45 | GTU | 76 | Malibu Grand Prix | Jack Baldwin (en) Ira Young Jeff Kline | Mazda Rotatif | | 205 | Abandon |
| 46 | GTP | 44 | Group 44 | Brian Redman Bob Tullius Hurley Haywood | Jaguar XJR-5 | G | 203 | Pneu, incendie |
| 46 | GTP | 44 | Group 44 | Brian Redman Bob Tullius Hurley Haywood | Jaguar 6,0 l V12 Atmo | G | 203 | Pneu, incendie |
| 47 | GTU | 57 | Zwiren Racing | Steve Zwiren Tony Pio Costa Mike Allison Wes Donnington | Mazda RX-7 | | 188 | Système d'essence |
| 47 | GTU | 57 | Zwiren Racing | Steve Zwiren Tony Pio Costa Mike Allison Wes Donnington | Mazda Rotatif | | 188 | Système d'essence |
| 48 | GTP | 31 | Goral Racing | Hugo Gralia Emory Donaldson Paul Goral | Porsche 935 | | 183 | Abandon |
| 48 | GTP | 31 | Goral Racing | Hugo Gralia Emory Donaldson Paul Goral | Porsche Type 930/80 3,2 l Flat-6 Turbo | | 183 | Abandon |
| 49 | GTO | 51 | Mosler Racing | John McComb Rick Mancuso Fred Fiala | Ferrari 512 BB LM | | 171 | Boite de vitesses |
| 49 | GTO | 51 | Mosler Racing | John McComb Rick Mancuso Fred Fiala | Ferrari 5,0 l V12 Atmo | | 171 | Boite de vitesses |
| 50 | GTU | 17 | Al Bacon Racing | Al Bacon Charles Guest Steve Millen (en) | Mazda RX-7 | | 170 | Boite de vitesses |
| 50 | GTU | 17 | Al Bacon Racing | Al Bacon Charles Guest Steve Millen (en) | Mazda Rotatif | | 170 | Boite de vitesses |
| 51 | GTP | 4 | Lee Racing | Lew Price Carson Baird Billy Hagan (en) Terry Labonte | Lola T711 | | 160 | Boite de vitesses |
| 51 | GTP | 4 | Lee Racing | Lew Price Carson Baird Billy Hagan (en) Terry Labonte | Chevrolet 366 6,0 l V8 Atmo | | 160 | Boite de vitesses |
| 52 | GTP | 29 | DeAtley Motorsports | Michael Roe Tommy Byrne Darin Brassfield (en) | March 84G | G | 159 | Système d'huile |
| 52 | GTP | 29 | DeAtley Motorsports | Michael Roe Tommy Byrne Darin Brassfield (en) | Chevrolet 5,8 l V8 Atmo | G | 159 | Système d'huile |
| 53 | GTP | 95 | Van Every Racing | Lance van Every Ash Tisdelle Jack Refenning | Porsche 935 | | 157 | Fuite d'huile |
| 53 | GTP | 95 | Van Every Racing | Lance van Every Ash Tisdelle Jack Refenning | Porsche Type 930/80 3,2 l Flat-6 Turbo | | 157 | Fuite d'huile |
| 54 | GTO | 06 | Roush Racing | John Bauer Jim Miller Willy T. Ribbs | Ford Mustang | G | 157 | Système d'huile |
| 54 | GTO | 06 | Roush Racing | John Bauer Jim Miller Willy T. Ribbs | Ford 6,0 l V8 Atmo | G | 157 | Système d'huile |
| 55 | GTP | 04 | Group 44 | Claude Ballot-Léna Jim Adams Chip Robinson | Jaguar XJR-5 | G | 154 | Pression d'huile |
| 55 | GTP | 04 | Group 44 | Claude Ballot-Léna Jim Adams Chip Robinson | Jaguar 6,0 l V12 Atmo | G | 154 | Pression d'huile |
| 56 | GTU | 60 | Hobbit Racing | Tony Swan Bob Ruth Steve Dietrich | Mazda RX-7 | | 150 | Accident |
| 56 | GTU | 60 | Hobbit Racing | Tony Swan Bob Ruth Steve Dietrich | Mazda Rotatif | | 150 | Accident |
| 57 | GTO | 54 | Dave Heinz Imports | Dave Heinz Dave Barnett Jerry Thompson | Chevrolet Corvette | | 138 | Abandon |
| 57 | GTO | 54 | Dave Heinz Imports | Dave Heinz Dave Barnett Jerry Thompson | Chevrolet V8 Atmo | | 138 | Abandon |
| 58 | GTO | 66 | Bob Beasley | Bob Beasley Jack Lewis Chuck Grantham | Porsche 911 Carrera RSR | | 118 | Accident |
| 58 | GTO | 66 | Bob Beasley | Bob Beasley Jack Lewis Chuck Grantham | Porsche 3,2 l Flat-6 Atmo | | 118 | Accident |
| 59 | GTP | 68 | BFGoodrich ( Busby Racing) | Pete Halsmer (en) Dieter Quester John Morton | Porsche 962 | BF | 107 | Accident |
| 59 | GTP | 68 | BFGoodrich ( Busby Racing) | Pete Halsmer (en) Dieter Quester John Morton | Porsche Type 962/71 3,2 l Flat-6 Turbo K36 | BF | 107 | Accident |
| 60 | GTP | 86 | Bayside Disposal Racing | Bruce Leven Henri Pescarolo Thierry Boutsen | Porsche 962 | B | 101 | Moteur |
| 60 | GTP | 86 | Bayside Disposal Racing | Bruce Leven Henri Pescarolo Thierry Boutsen | Porsche Type 962/70 2,9 l Flat-6 Turbo K36 | B | 101 | Moteur |
| 61 | GTO | 97 | Scyphers-Ankor Racing | Billy Scyphers Allen Glick Bill Cooper | Chevrolet Corvette | | 99 | Accident |
| 61 | GTO | 97 | Scyphers-Ankor Racing | Billy Scyphers Allen Glick Bill Cooper | Chevrolet V8 Atmo | | 99 | Accident |
| 62 | GTP | 25 | Red Lobster Racing | Kenper Miller Dave Cowart Mauricio de Narváez | March 83G | | 92 | Boite de vitesses |
| 62 | GTP | 25 | Red Lobster Racing | Kenper Miller Dave Cowart Mauricio de Narváez | Chevrolet 5,8 l V8 Atmo | | 92 | Boite de vitesses |
| 63 | GTU | 87 | Performance Motorsports | Elliott Forbes-Robinson John Schneider (en) Don Istook | Porsche 924 Carrera GTR | | 89 | Accident |
| 63 | GTU | 87 | Performance Motorsports | Elliott Forbes-Robinson John Schneider (en) Don Istook | Porsche Type 924 2,0 l I4 Turbo | | 89 | Accident |
| 64 | GTO | 58 | Coin Operated Racing | Jim Torres Don Kravig Michael Hammond | Porsche 934 | | 86 | Abandon |
| 64 | GTO | 58 | Coin Operated Racing | Jim Torres Don Kravig Michael Hammond | Porsche Type 962 3,0 l Flat-6 Turbo | | 86 | Abandon |
| 65 | GTU | 13 | Rubino Racing | Frank Rubino Dennis Wagoner Ken Knott | Mazda RX-7 | G | 67 | Essieu |
| 65 | GTU | 13 | Rubino Racing | Frank Rubino Dennis Wagoner Ken Knott | Mazda Rotatif | G | 67 | Essieu |
| 66 | GTP | 20 | Spirit of Cleveland | Freddy Baker Don Herman Rich Maher Richard Silver | Porsche 935 | | 62 | Turbo |
| 66 | GTP | 20 | Spirit of Cleveland | Freddy Baker Don Herman Rich Maher Richard Silver | Porsche Type 930/80 3,2 l Flat-6 Turbo | | 62 | Turbo |
| 67 | GTO | 70 | Ormond Racing | Don Cummings Craig Rubright Greg Walker | Chevrolet Corvette | | 58 | Moteur |
| 67 | GTO | 70 | Ormond Racing | Don Cummings Craig Rubright Greg Walker | Chevrolet V8 Atmo | | 58 | Moteur |
| 68 | GTP | 07 | LSJ Racing | Lyn St. James Tim Coconis Eric Lang | Argo JM16 | | 54 | Boite de vitesses |
| 68 | GTP | 07 | LSJ Racing | Lyn St. James Tim Coconis Eric Lang | Ford Cosworth DFV 3,0 l V8 Atmo | | 54 | Boite de vitesses |
| 69 | GTU | 08 | Paul Romano | Drake Olson (en) Steve Potter Willard Howe | Mazda RX-7 | | 45 | Abandon |
| 69 | GTU | 08 | Paul Romano | Drake Olson (en) Steve Potter Willard Howe | Mazda Rotatif | | 45 | Abandon |
| 70 | GTU | 77 | Championship Motorsports | Don Wallace John Petrick Don Sikes | Mazda RX-7 | | 36 | Incendie |
| 70 | GTU | 77 | Championship Motorsports | Don Wallace John Petrick Don Sikes | Mazda Rotatif | | 36 | Incendie |
| 71 | GTO | 47 | Dingman Brothers Racing | Walt Bohren (en) Ron Bouchard (en) Billy Dingman | Pontiac Firebird | | 35 | Abandon |
| 71 | GTO | 47 | Dingman Brothers Racing | Walt Bohren (en) Ron Bouchard (en) Billy Dingman | Pontiac Atmo | | 35 | Abandon |
| 72 | GTO | 41 | Unlimited Telephones | Luis Sereix Ralph Noseda | Pontiac Firebird | | 28 | Système d'essence |
| 72 | GTO | 41 | Unlimited Telephones | Luis Sereix Ralph Noseda | Pontiac Atmo | | 28 | Système d'essence |
| 73 | GTU | 84 | Clay Young | Clay Young | Pontiac Fiero | | 21 | Moteur |
| 73 | GTU | 84 | Clay Young | Clay Young | Pontiac 3,0 l I4 Atmo | | 21 | Moteur |
| 74 | GTP | 16 | Henn's Swap Shop Racing | Harald Grohs Jean-Louis Schlesser Preston Henn Walter Brun | Porsche 935 | | 15 | Moteur |
| 74 | GTP | 16 | Henn's Swap Shop Racing | Harald Grohs Jean-Louis Schlesser Preston Henn Walter Brun | Porsche Type 930/80 3,2 l Flat-6 Turbo | | 15 | Moteur |
| 75 | GTP | 61 | Team USA/Deco Sales | Steve Shelton (en) Don Courtney Brent O'Neill | Royale RP40 | | 14 | Embrayage |
| 75 | GTP | 61 | Team USA/Deco Sales | Steve Shelton (en) Don Courtney Brent O'Neill | Ford Cosworth DFV 3,0 l V8 Atmo | | 14 | Embrayage |
| 76 | GTU | 74 | Whitehall Motorsports | Paul Gentilozzi Kent Hill Austin Godsey Bobby Akin | Porsche 924 Carrera GTR | | 12 | Système de refroidissement |
| 76 | GTU | 74 | Whitehall Motorsports | Paul Gentilozzi Kent Hill Austin Godsey Bobby Akin | Porsche Type 924 2,0 l I4 Turbo | | 12 | Système de refroidissement |
| Np. | GTP | 88 | Bayside Disposal Racing | Bruce Leven Henri Pescarolo Thierry Boutsen | Porsche 962 | B | | |
| Np. | GTP | 88 | Bayside Disposal Racing | Bruce Leven Henri Pescarolo Thierry Boutsen | Porsche Type 962/71 3,2 l Flat-6 Turbo K36 | B | | |
| Np. | GTP | 19 | Performance Motorcar | Jack Miller Carlos Ramirez Bruce Redding | Nimrod NRA/C2 (en) | | | |
| Np. | GTP | 19 | Performance Motorcar | Jack Miller Carlos Ramirez Bruce Redding | Aston Martin DP1229 Tickford 5,3 l V8 Atmo | | | |
| Np. | GTO | 64 | Rene Rodriguez | Ernesto Soto Rene Rodriguez | Chevrolet Corvette | | | |
| Np. | GTO | 64 | Rene Rodriguez | Ernesto Soto Rene Rodriguez | Chevrolet V8 Atmo | | | |
| Np. | GTP | 05 | Hi-Tech Racing | Tico Almeida Miguel Morejon | Porsche 935 | | | |
| Np. | GTP | 05 | Hi-Tech Racing | Tico Almeida Miguel Morejon | Porsche Type 930/80 3,2 l Flat-6 Turbo | | | |
| Np. | GTU | 00 | Jim Logan | Jim Logan Graham McRae Leonard Yanke | Dodge Daytona | | | |
| Np. | GTU | 00 | Jim Logan | Jim Logan Graham McRae Leonard Yanke | Dodge 2,2 l I4 Atmo | | | |
| Np. | GTU | 27 | Paul Fortner | Russell Gossett Gary Stephens Paul Wolfe (en) | Datsun 280Z | | | |
| Np. | GTU | 27 | Paul Fortner | Russell Gossett Gary Stephens Paul Wolfe (en) | Datsun 2,8 l I6 Atmo | | | |
| Np. | GTP | 85 | Ralph Sanchez Racing | Emerson Fittipaldi Tony Garcia Mauricio de Narvaez | March 85G | G | | |
| Np. | GTP | 85 | Ralph Sanchez Racing | Emerson Fittipaldi Tony Garcia Mauricio de Narvaez | Buick 3,4 l V6 Turbo | G | | |
| Nq. | GTO | 24 | Kreider Racing | Dale Kreider Roy Newsome | Chevrolet Camaro | | | |
| Nq. | GTO | 24 | Kreider Racing | Dale Kreider Roy Newsome | Chevrolet 6,0 l V8 Atmo | | | |
| Nq. | GTU | 34 | El Salvador Racing | Alfredo Mena George Drolsom | Porsche 924 Carrera GTR | | | |
| Nq. | GTU | 34 | El Salvador Racing | Alfredo Mena George Drolsom | Porsche Type 924 2,0 l I4 Turbo | | | |
| Nq. | GTU | 02 | RNGC Racing | Dale Kreider Roy Newsome | Mazda RX-7 | | | |
| Nq. | GTU | 02 | RNGC Racing | Dale Kreider Roy Newsome | Mazda Rotatif | | | |
| Nq. | GTO | 23 | Import Restoration | Alan Howes Paul Reisman Bob Hebert | Porsche 911 Carrera RSR | | | |
| Nq. | GTO | 23 | Import Restoration | Alan Howes Paul Reisman Bob Hebert | Porsche 3,2 l Flat-6 Atmo | | | |
| Nq. | GTO | 69 | John Hofstra | John Hofstra Charles Slater | Porsche 911 Carrera RSR | | | |
| Nq. | GTO | 69 | John Hofstra | John Hofstra Charles Slater | Porsche 3,2 l Flat-6 Atmo | | | |
| Nq. | GTU | 79 | Whitehall Motorsports | Tom Winters Bob Bergstrom John Casey | Porsche 924 Carrera GTR | | | |
| Nq. | GTU | 79 | Whitehall Motorsports | Tom Winters Bob Bergstrom John Casey | Porsche Type 924 2,0 l I4 Turbo | | | |

## Pole position et record du tour

* Pole position : John Paul Jr. (#85 March 85G) en 1 min 41 s 490
* Meilleur tour en course : Al Holbert (#14 Holbert Racing) en 1 min 48 s 435