# 1980 24 Hours of Daytona

The 18th Annual 24 Hour Pepsi Challenge Daytona was a 24-hour GT race held on February 2–3, 1980 at the Daytona International Speedway road course. The race served as the opening round of the 1980 World Championship for Makes, 1980 World Challenge for Endurance Drivers and the 1980 IMSA GTX, GTO and GTU Championships.
Victory overall and in the GTX class went to the No. 2 Joest Racing run Porsche 935 J from Germany, driven by the all-German crew of Reinhold Jöst, Volkert Merl and Rolf Stommelen. Over the 24 hours elapsed time of the race the Joest Porsche completed 715 laps, covering 4,418 kilometres. The team won the race by 33 laps over the No. 09 Preston Henn run Porsche 935/77A driven by Al Holbert and John Paul. Another 18 laps behind was the No. 0 Porsche 935 K3/80 of Interscope Racing driven by Ted Field, Milt Minter and Danny Ongais.
Victory in the GTU Class and fifth outright was the No. 62 Porsche 914/6 driven by Jim Cook, Bill Koll and Greg LaCava by 14 laps over the No. 77 Mazda RX-7 of Jim Downing, Brad Frisselle and Roger Mandeville. Victory in the GTO class and sixth outright went to the No. 54 Montura Racing Porsche 911 Carrera RSR driven by Tony Garcia, Terry Herman and Alberto Vadia by a single lap over the Colombian No. 46 DeNarvaez Racing Porsche 911 Carrera RSR driven by Mauricio DeNarvaez, Ricardo Londoño and Albert Naon.

## Race results

Class winners denoted in bold and with ‡.
| Pos | Class | No. | Team / Entrant | Drivers | Car | Laps |
| Pos | Class | No. | Team / Entrant | Drivers | Engine | Laps |
| 1 | GTX | 2 | Joest Racing | Reinhold Jöst Volkert Merl Rolf Stommelen | Porsche 935 J | 715 ‡ |
| 1 | GTX | 2 | Joest Racing | Reinhold Jöst Volkert Merl Rolf Stommelen | Porsche 2.8 L Twin-turbo Flat-6 | 715 ‡ |
| 2 | GTX | 09 | Thunderbird Swap Shops | John Paul Al Holbert DNS: Preston Henn | Porsche 935/77A | 682 |
| 2 | GTX | 09 | Thunderbird Swap Shops | John Paul Al Holbert DNS: Preston Henn | Porsche Turbo Flat-6 | 682 |
| 3 | GTX | 0 | Interscope Racing | Ted Field Milt Minter Danny Ongais | Porsche 935 K3/80 | 664 |
| 3 | GTX | 0 | Interscope Racing | Ted Field Milt Minter Danny Ongais | Porsche Turbo Flat-6 | 664 |
| 4 | GTX | 80 | All Canadian Racing | Maurice Carter Craig Carter Murray Edwards | Chevrolet Camaro | 639 |
| 4 | GTX | 80 | All Canadian Racing | Maurice Carter Craig Carter Murray Edwards | Chevrolet 7.0 V8 | 639 |
| 5 | GTU | 62 | William J. Koll | Bill Koll Jim Cook Greg LaCava | Porsche 914/6 | 632 ‡ |
| 5 | GTU | 62 | William J. Koll | Bill Koll Jim Cook Greg LaCava | Porsche 2.0 L Flat-6 | 632 ‡ |
| 6 | GTO | 54 | Montura Racing | Tony Garcia Terry Herman Alberto Vadia | Porsche 911 Carrera RSR | 630 ‡ |
| 6 | GTO | 54 | Montura Racing | Tony Garcia Terry Herman Alberto Vadia | Porsche 3.0 L Flat-6 | 630 ‡ |
| 7 | GTO | 46 | DeNarvaez Racing | Mauricio DeNarvaez Ricardo Londoño Albert Naon | Porsche 911 Carrera RSR | 629 |
| 7 | GTO | 46 | DeNarvaez Racing | Mauricio DeNarvaez Ricardo Londoño Albert Naon | Porsche 3.0 L Flat-6 | 629 |
| 8 | GTU | 77 | Roger Mandeville | Roger Mandeville Jim Downing Brad Frisselle | Mazda RX-7 | 618 |
| 8 | GTU | 77 | Roger Mandeville | Roger Mandeville Jim Downing Brad Frisselle | Mazda 1.3 L Rotary | 618 |
| 9 | GTX | 9 | Dick Barbour Racing | Bob Garretson Skeeter McKitterick Anny-Charlotte Verney | Porsche 935 K3 | 599 |
| 9 | GTX | 9 | Dick Barbour Racing | Bob Garretson Skeeter McKitterick Anny-Charlotte Verney | Porsche 3.2 L Twin-turbo Flat-6 | 599 |
| 10 | GTX | 4 | Jolly Club | Carlo Facetti Martino Finotto DNS: Gianfranco Ricci | Lancia Montecarlo Turbo | 597 |
| 10 | GTX | 4 | Jolly Club | Carlo Facetti Martino Finotto DNS: Gianfranco Ricci | Lancia Lampedri 1.4 L Turbo I4 | 597 |
| 11 | GTX | 59 | Brumos Porsche Audi | Peter Gregg Hurley Haywood Bruce Leven | Porsche 935/79 | 584 |
| 11 | GTX | 59 | Brumos Porsche Audi | Peter Gregg Hurley Haywood Bruce Leven | Porsche Turbo Flat-6 | 584 |
| 12 | GTU | 73 | Z&W Enterprises | Fred Apgar Pierre Honegger Mark Hutchins | Mazda RX-7 | 546 |
| 12 | GTU | 73 | Z&W Enterprises | Fred Apgar Pierre Honegger Mark Hutchins | Mazda Rotary | 546 |
| 13 | GTO | 89 | Hector Huerta | Jean-Paul Libert Francisco Romero Ernesto Soto | Porsche 911 Carrera RSR | 544 |
| 13 | GTO | 89 | Hector Huerta | Jean-Paul Libert Francisco Romero Ernesto Soto | Porsche 3.0 L Flat-6 | 544 |
| 14 DNF | GTO | 65 | Nicholas/McRoberts Racing | Tony Adamowicz John Morton | Ferrari 365 GTB/4 | 539 |
| 14 DNF | GTO | 65 | Nicholas/McRoberts Racing | Tony Adamowicz John Morton | Ferrari Tipo 251 4.4 L V12 | 539 |
| 15 | GTU | 78 | Revolution Wheels | Robert Giesel Alan Johnson Bruce Nesbitt | Mazda RX-2 | 533 |
| 15 | GTU | 78 | Revolution Wheels | Robert Giesel Alan Johnson Bruce Nesbitt | Mazda 1.3 L Rotary | 533 |
| 16 DSQ | GTX | 93 | Whittington Brothers Racing | Bill Whittington Dale Whittington Don Whittington | Porsche 935 K3 | 509 |
| 16 DSQ | GTX | 93 | Whittington Brothers Racing | Bill Whittington Dale Whittington Don Whittington | Porsche 3.2 L Turbo Flat-6 | 509 |
| 17 | GTU | 81 | Trinity Racing | Lyn St. James Mark Welch Tom Winters | Mazda RX-7 | 498 |
| 17 | GTU | 81 | Trinity Racing | Lyn St. James Mark Welch Tom Winters | Mazda Rotary | 498 |
| 18 | GTU | 08 | Moran Construction | M. L. Speer Ray Ratcliff Terry Wolters | Porsche 911 SC | 489 |
| 18 | GTU | 08 | Moran Construction | M. L. Speer Ray Ratcliff Terry Wolters | Porsche 3.0 L Flat-6 | 489 |
| 19 | GTU | 57 | Independent Personalized | Wayne Baker Dan Gilliland Jeff Scott | Porsche 914/4 | 486 |
| 19 | GTU | 57 | Independent Personalized | Wayne Baker Dan Gilliland Jeff Scott | Volkswagen 411E 1.6 L Flat-4 | 486 |
| 20 | GTU | 82 | Trinity Racing | John Casey Steve Dietrich Lee Mueller | Mazda RX-7 | 483 |
| 20 | GTU | 82 | Trinity Racing | John Casey Steve Dietrich Lee Mueller | Mazda Rotary | 483 |
| 21 | GTO | 10 | Oftedahl Trucking | Dave Heinz Gerry Wellik Bob Young | Chevrolet Camaro | 476 |
| 21 | GTO | 10 | Oftedahl Trucking | Dave Heinz Gerry Wellik Bob Young | Chevrolet 5.7 V8 | 476 |
| 22 | GTO | 22 | Group Bruckmann | Volker Bruckmann Rug Cunningham David Goodell | Porsche 911 Carrera RSR | 464 |
| 22 | GTO | 22 | Group Bruckmann | Volker Bruckmann Rug Cunningham David Goodell | Porsche 3.0 L Flat-6 | 464 |
| 23 | GTO | 37 | Botero Racing | Jorge Cortés Honorato Espinosa Francisco López | Porsche 911 Carrera RSR | 457 |
| 23 | GTO | 37 | Botero Racing | Jorge Cortés Honorato Espinosa Francisco López | Porsche 3.0 L Flat-6 | 457 |
| 24 DNF | GTU | 39 | JLC Racing | Stu Fisher Amos Johnson Allan Moffat DNS: Brad Frisselle | Mazda RX-7 | 440 |
| 24 DNF | GTU | 39 | JLC Racing | Stu Fisher Amos Johnson Allan Moffat DNS: Brad Frisselle | Mazda Rotary | 440 |
| 25 DNF | GTO | 28 | Tom Nehl | Tom Nehl Peter Kirill Kathy Rude | Chevrolet Camaro | 435 |
| 25 DNF | GTO | 28 | Tom Nehl | Tom Nehl Peter Kirill Kathy Rude | Chevrolet 5.7 V8 | 435 |
| 26 DNF | GTO | 37 | T&R Racing | Luis Méndez Tico Almeida Rene Rodriguez | Porsche 911 Carrera RSR | 423 |
| 26 DNF | GTO | 37 | T&R Racing | Luis Méndez Tico Almeida Rene Rodriguez | Porsche 3.0 L Flat-6 | 423 |
| 27 | GTO | 15 | Bavarian Motors International | Bruno Beilcke Alf Gebhardt DNS Helmut Trieb | BMW 3.5 CSL | 420 |
| 27 | GTO | 15 | Bavarian Motors International | Bruno Beilcke Alf Gebhardt DNS Helmut Trieb | BMW M49 4.5 L I6 | 420 |
| 28 | GTO | 92 | The Cummings Marque | Don Cummings Guido Levetto | Shelby GT350 | 410 |
| 28 | GTO | 92 | The Cummings Marque | Don Cummings Guido Levetto | Ford V8 | 410 |
| 29 | GTX | 6 | Dick Barbour Racing | Dick Barbour John Fitzpatrick Manfred Schurti | Porsche 935 K3/80 | 405 |
| 29 | GTX | 6 | Dick Barbour Racing | Dick Barbour John Fitzpatrick Manfred Schurti | Porsche 3.2 L Twin-turbo Flat-6 | 405 |
| 30 DNF | GTO | 71 | Keirn Garage | Philip Keirn Ed Errington Larry Trotter | Chevrolet Corvette C3 | 402 |
| 30 DNF | GTO | 71 | Keirn Garage | Philip Keirn Ed Errington Larry Trotter | Chevrolet V8 | 402 |
| 31 | GTX | 76 | Arrow Heating Co. | Joe Chamberlain John Chamberlain Richard Valentine | Chevrolet Corvette C3 | 393 |
| 31 | GTX | 76 | Arrow Heating Co. | Joe Chamberlain John Chamberlain Richard Valentine | Chevrolet 7.0 L V8 | 393 |
| 32 DNF | GTO | 85 | David Deacon | Jacques Bienvenue David Deacon Peter Moennick | Porsche 911 Carrera RSR | 375 |
| 32 DNF | GTO | 85 | David Deacon | Jacques Bienvenue David Deacon Peter Moennick | Porsche 3.0 L Flat-6 | 375 |
| 33 | GTU | 06 | Intrepid, Inc. | Joe DiBattista Tom Ciccone Alan Howes | Porsche 911 | 358 |
| 33 | GTU | 06 | Intrepid, Inc. | Joe DiBattista Tom Ciccone Alan Howes | Porsche Flat-6 | 358 |
| 34 DNF | GTU | 79 | Sports Ltd. Racing | Pat Bedard Bob Bergstrom | Mazda RX-7 | 355 |
| 34 DNF | GTU | 79 | Sports Ltd. Racing | Pat Bedard Bob Bergstrom | Mazda Rotary | 355 |
| 35 | GTO | 56 | Rick Borlase | Rick Borlase Michael Hammond Don Kravig | Porsche 911 Carrera | 348 |
| 35 | GTO | 56 | Rick Borlase | Rick Borlase Michael Hammond Don Kravig | Porsche Flat-6 | 348 |
| 36 DNF | GTX | 69 | Preston Henn | Preston Henn Pierre Dieudonné | Ferrari 512 BB LM | 341 |
| 36 DNF | GTX | 69 | Preston Henn | Preston Henn Pierre Dieudonné | Ferrari Tipo F102B 4.9 L Flat-12 | 341 |
| 37 DNF | GTO | 24 | American Racing Team | Ray Mummery Jack Refenning Ren Tilton | Porsche 934 | 337 |
| 37 DNF | GTO | 24 | American Racing Team | Ray Mummery Jack Refenning Ren Tilton | Porsche 3.0 L Turbo Flat-6 | 337 |
| 38 DNF | GTU | 52 | Snowmobile Racing | Tom Cripe Joseph Hamilton Fred Snow | Porsche 911 S | 301 |
| 38 DNF | GTU | 52 | Snowmobile Racing | Tom Cripe Joseph Hamilton Fred Snow | Porsche Flat-6 | 301 |
| 39 DNF | GTX | 5 | Racing Associates | Charles Mendez Paul Miller Brian Redman | Porsche 935 K3 | 290 |
| 39 DNF | GTX | 5 | Racing Associates | Charles Mendez Paul Miller Brian Redman | Porsche Twin-turbo Flat-6 | 290 |
| 40 DNF | GTO | 96 | NTS Racing | William Coykendall Bob Earl Fred Stiff | Datsun 240Z | 281 |
| 40 DNF | GTO | 96 | NTS Racing | William Coykendall Bob Earl Fred Stiff | Datsun I6 | 281 |
| 41 DNF | GTO | 42 | Dick Neland | Dick Neland Joe Cotrone Bill Ferran | Chevrolet Camaro | 270 |
| 41 DNF | GTO | 42 | Dick Neland | Dick Neland Joe Cotrone Bill Ferran | Chevrolet 5.7 V8 | 270 |
| 42 DNF | GTU | 95 | Mike Ramirez Racing | Mike Ramirez Luis Gordillo Manuel Villa | Porsche 911 | 263 |
| 42 DNF | GTU | 95 | Mike Ramirez Racing | Mike Ramirez Luis Gordillo Manuel Villa | Porsche Flat-6 | 263 |
| 43 DNF | GTX | 11 | March Engineering | Ian Grob Michael Korten Patrick Nève | March-BMW M1/C | 260 |
| 43 DNF | GTX | 11 | March Engineering | Ian Grob Michael Korten Patrick Nève | BMW M88 3.5 L I6 | 260 |
| 44 DNF | GTU | 70 | Herman Racing | Chris Doyle Charles Guest Mike Meyer | Mazda RX-7 | 250 |
| 44 DNF | GTU | 70 | Herman Racing | Chris Doyle Charles Guest Mike Meyer | Mazda Rotary | 250 |
| 45 DNF | GTX | 13 | Andial Racing | Elliot Forbes-Robinson Howard Meister Randolph Townsend | Porsche 935 K3 | 233 |
| 45 DNF | GTX | 13 | Andial Racing | Elliot Forbes-Robinson Howard Meister Randolph Townsend | Porsche Twin-turbo Flat-6 | 233 |
| 46 DNF | GTO | 32 | Scorpio Racing | Eduardo Barrientos Enrique Molins Carlos Pineda | Porsche 911 Carrera RSR | 233 |
| 46 DNF | GTO | 32 | Scorpio Racing | Eduardo Barrientos Enrique Molins Carlos Pineda | Porsche 3.0 L Flat-6 | 233 |
| 47 DNF | GTX | 25 | Deren Automotive | Christine Beckers Dave Cowart Kenper Miller | BMW M1 | 222 |
| 47 DNF | GTX | 25 | Deren Automotive | Christine Beckers Dave Cowart Kenper Miller | BMW M88 3.5 L I6 | 222 |
| 48 DNF | GTX | 55 | Racing Associates | Claude Ballot-Léna Gérard Bleynie Ralph Kent-Cooke | Porsche 935 | 217 |
| 48 DNF | GTX | 55 | Racing Associates | Claude Ballot-Léna Gérard Bleynie Ralph Kent-Cooke | Porsche Twin-turbo Flat-6 | 217 |
| 49 DNF | GTO | 38 | Boricua Racing | Bonky Fernandez Tato Ferrer Kees Nierop | Porsche 911 Carrera RSR | 211 |
| 49 DNF | GTO | 38 | Boricua Racing | Bonky Fernandez Tato Ferrer Kees Nierop | Porsche 3.0 L Flat-6 | 211 |
| 50 DNF | GTX | 19 | Chris Cord Racing | Jim Adams Chris Cord DNS: Dick Ferguson | Chevrolet Monza | 188 |
| 50 DNF | GTX | 19 | Chris Cord Racing | Jim Adams Chris Cord DNS: Dick Ferguson | Chevrolet 6.0 L V8 | 188 |
| 51 DNF | GTX | 94 | Whittington Brothers Racing | Axel Plankenhorn Dale Whittington | Porsche 935/79 | 179 |
| 51 DNF | GTX | 94 | Whittington Brothers Racing | Axel Plankenhorn Dale Whittington | Porsche Turbo Flat-6 | 179 |
| 52 DNF | GTO | 44 | Group 44 | Bob Tullius John Kelly John McComb | Triumph TR8 | 171 |
| 52 DNF | GTO | 44 | Group 44 | Bob Tullius John Kelly John McComb | Rover 3.9 L V8 | 171 |
| 53 DNF | GTO | 75 | Show Cars of Florida | Stephen Bond Billy Hagan Dale Kreider | Chevrolet Corvette C3 | 170 |
| 53 DNF | GTO | 75 | Show Cars of Florida | Stephen Bond Billy Hagan Dale Kreider | Chevrolet V8 | 170 |
| 54 DNF | GTX | 05 | Racing Associates | Bob Akin Bobby Rahal Roy Woods | Porsche 935 K3 | 156 |
| 54 DNF | GTX | 05 | Racing Associates | Bob Akin Bobby Rahal Roy Woods | Porsche Twin-turbo Flat-6 | 156 |
| 55 DNF | GTO | 51 | Moana Corp. | Robert Kirby John Hotchkis John Hotchkis, Jr. | Porsche 911 Carrera RSR | 147 |
| 55 DNF | GTO | 51 | Moana Corp. | Robert Kirby John Hotchkis John Hotchkis, Jr. | Porsche 3.0 L Flat-6 | 147 |
| 56 DNF | GTX | 3 | Jim Busby Racing | Jim Busby Bruce Jenner Rick Knoop | March-BMW M1/C | 139 |
| 56 DNF | GTX | 3 | Jim Busby Racing | Jim Busby Bruce Jenner Rick Knoop | BMW M88 3.5 L I6 | 139 |
| 57 DNF | GTU | 23 | Frank L. Carney | Frank Carney Dick Davenport Don Devendorf | Datsun 280ZX | 109 |
| 57 DNF | GTU | 23 | Frank L. Carney | Frank Carney Dick Davenport Don Devendorf | Nissan L28E 2.8 L I6 | 109 |
| 58 | GTO | 99 | Full-Time Racing | Phil Currin | Chevrolet Corvette C3 | 89 |
| 58 | GTO | 99 | Full-Time Racing | Phil Currin | Chevrolet V8 | 89 |
| 59 DNF | GTX | 30 | Electrodyne | Gianpiero Moretti Bruce Canepa Fernando Cazzaniga | Porsche 935 J | 72 |
| 59 DNF | GTX | 30 | Electrodyne | Gianpiero Moretti Bruce Canepa Fernando Cazzaniga | Porsche 3.2 L Twin-turbo Flat-6 | 72 |
| 60 DNF | GTO | 58 | Coco Lopez-Piña Colada | Diego Febles Mandy Gonzalez Chiqui Soldevilla | Porsche 911 Carrera RSR | 60 |
| 60 DNF | GTO | 58 | Coco Lopez-Piña Colada | Diego Febles Mandy Gonzalez Chiqui Soldevilla | Porsche 3.0 L Flat-6 | 60 |
| 61 DNF | GTO | 16 | Yenko Chevrolet-Honda | Kim Mason Jerry Thompson Don Yenko | Chevrolet Corvette C3 | 56 |
| 61 DNF | GTO | 16 | Yenko Chevrolet-Honda | Kim Mason Jerry Thompson Don Yenko | Chevrolet V8 | 56 |
| 62 DNF | GTU | 17 | Racing Beat | Dennis Aase Walt Bohren Jeff Kline | Mazda RX-7 | 51 |
| 62 DNF | GTU | 17 | Racing Beat | Dennis Aase Walt Bohren Jeff Kline | Mazda Rotary | 51 |
| 63 DNF | GTO | 03 | Toyota Village | Rudy Bartling Werner Frank Angelo Pallavicini | Porsche 934 | 51 |
| 63 DNF | GTO | 03 | Toyota Village | Rudy Bartling Werner Frank Angelo Pallavicini | Porsche 3.0 L Turbo Flat-6 | 51 |
| 64 DNF | GTU | 83 | Zotz Garage | John Belperche Doug Zitza Harro Zitza | Porsche 914/6 | 44 |
| 64 DNF | GTU | 83 | Zotz Garage | John Belperche Doug Zitza Harro Zitza | Porsche 2.0 L Flat-6 | 44 |
| 65 DNF | GTO | 63 | Guy Thomas | Hugh Davenport Nort Northam Guy Thomas | Chevrolet Camaro | 29 |
| 65 DNF | GTO | 63 | Guy Thomas | Hugh Davenport Nort Northam Guy Thomas | Chevrolet 5.7 V8 | 29 |
| 66 DNF | GTX | 07 | Heimrath Racing | Ludwig Heimrath Carlos Moran Johnny Rutherford | Porsche 935 | 24 |
| 66 DNF | GTX | 07 | Heimrath Racing | Ludwig Heimrath Carlos Moran Johnny Rutherford | Porsche Twin-turbo Flat-6 | 24 |
| 67 DNF | GTU | 18 | Automobile International | Anatoly Arutunoff George Drolsom José Marina | Lancia Stratos HF | 20 |
| 67 DNF | GTU | 18 | Automobile International | Anatoly Arutunoff George Drolsom José Marina | Ferrari Dino 2.4 L V6 | 20 |
| 68 DNF | GTO | 88 | Herb Adams VSE | Herb Adams Walker Evans Kenny Roberts | Pontiac Firebird | 0 |
| 68 DNF | GTO | 88 | Herb Adams VSE | Herb Adams Walker Evans Kenny Roberts | Pontiac V8 | 0 |
| DNQ | GTX | 00 | Interscope Racing | Ted Field Milt Minter Danny Ongais | Porsche 935/77A | |
| DNQ | GTX | 00 | Interscope Racing | Ted Field Milt Minter Danny Ongais | Porsche Turbo Flat-6 | |
| DNQ | GTX | 14 | Renaissance Group Racing | Pierre Dieudonné Jorge Koechlin Leon Walger | Porsche 935 | |
| DNQ | GTX | 14 | Renaissance Group Racing | Pierre Dieudonné Jorge Koechlin Leon Walger | Porsche Turbo Flat-6 | |
| DNS | GTO | 8 | Bob Beasley | Bob Beasley Chuck Grantham George Stone | Porsche 911 Carrera RSR | |
| DNS | GTO | 8 | Bob Beasley | Bob Beasley Chuck Grantham George Stone | Porsche 3.0 L Flat-6 | |
| DNS | GTO | 98 | Van Every Racing | Bill Johnson Ash Tisdelle Lance Van Every | Porsche 911 Carrera RSR | |
| DNS | GTO | 98 | Van Every Racing | Bill Johnson Ash Tisdelle Lance Van Every | Porsche 3.0 L Flat-6 | |
| DNQ | GTU | 01 | Roehrig Racing | Francois Laurin J. Kurt Roehrig Dave White | BMW 320i | |
| DNQ | GTU | 01 | Roehrig Racing | Francois Laurin J. Kurt Roehrig Dave White | BMW M10 2.0 L I4 | |
| DNQ | GTU | 12 | Sidney Smith III | Sidney Smith Tommy Johnson Karl Schoepflin | Porsche 914/6 | |
| DNQ | GTU | 12 | Sidney Smith III | Sidney Smith Tommy Johnson Karl Schoepflin | Porsche 2.0 L Flat-6 | |
| DNQ | GTU | 33 | A-10 Racing | Richard Aten Jack Refenning Peter Welter | Porsche 911 | |
| DNQ | GTU | 33 | A-10 Racing | Richard Aten Jack Refenning Peter Welter | Porsche Flat-6 | |
| DNQ | GTU | 35 | Janis Taylor | Vic Provenzano Rex Ramsey Del Russo Taylor | Alfa Romeo Alfetta GTV | |
| DNQ | GTU | 35 | Janis Taylor | Vic Provenzano Rex Ramsey Del Russo Taylor | Alfa Romeo Twin Cam 2.0 L I4 | |
| DNS | GTO | 49 | Tortilla Flats Racing | Bob Copeman Jerry Demele Warwick Henderson | Porsche 911 Carrera RSR | |
| DNS | GTO | 49 | Tortilla Flats Racing | Bob Copeman Jerry Demele Warwick Henderson | Porsche 3.0 L Flat-6 | |
| DNS | GTX | 91 | Grand Prix International | Kerry Mitt Bob Pearl Richard Valentine | Chevrolet Corvette C3 | |
| DNS | GTX | 91 | Grand Prix International | Kerry Mitt Bob Pearl Richard Valentine | Chevrolet V8 | |
| Source: |||||||