Welcome to the IMSA History unofficial website

This site is aimed at bringing you memories from the glory days of sportscar racing in the US.



 1 14 PORSCHE 962 103 Al Holbert-Derek Bell-Al Unser Jr 712 Laps 1.GTP
 2  8 PORSCHE 962 104 A.J Foyt-Arie Luynedijk-Danny Sulivan-Preston Henn 712 Laps 2.GTP
 3 67 PORSCHE 962 106 Derek Warwick-Darin Brassfield-Jim Busby-Jochen Mass 711 Laps 3.GTP
 4 64 FORD MUSTANG Lee Mueller-Maurice Hassey-Lanny Hester 622 Laps 1.GTO
 5 07 FORD MUSTANG Scott Pruett-Bruce Jenner-Klaus Ludwig 614 Laps 2.GTO
 6 44 JAGUAR XJR7 004 Bob Tullius-Claude Ballot Léna-Chip Robinson 607 Laps 4.GTP
 7 13 ARGO JM19 Mazda 109 Frank Rubino-Ray Mummery-John Schneider 600 Laps 1.Lights
 8 71 MAZDA RX7 Amos Johnson-Dennis Shaw-Jack Dunham 597 Laps 1.GTU
 9 35 ROYALE RP40 Porsche 1 Mandy Gonzalez-Ernesto Soto-Basilio Davila 579 Laps 2.Lights
10 75 MAZDA RX7 Bob Reed-Tom Kendall-John Hogdal 563 Laps 2.GTU
11 32 NISSAN 280ZX Bob Leitzinger-Mike Carder-Lewis Baldwin-Steve Alexander 537 Laps 3.GTU
12 68 PORSCHE 962 105 Jan Lammers-John Morton-Derek Warwick 512 Laps 5.GTP
13 34 PORSCHE 934 930 670 0161 Kikos Fonseca-Luis Mendez-Jamsal 512 Laps 3.GTO
14 27 ARGO JM19 Mazda 106 Dave Cowart-Kenper Miller-Jim Fowells 511 Laps 3.Lights
15 76 CHEVROLET CORVETTE Nort Northam-Greg Walker-Craig Rutright 506 Laps 4.GTO
16 98 TOYOTA CELICA Dennis Aase-Chris Cord 489 Laps 5.GTO
17 93 ARGO JM16 Mazda 098 Ron Pawley-Don Marsh-Kelly Marsh 482 Laps 4.Lights
18 17 MAZDA RX7 Al Bacon-Bill Scott-Dennis Krueger 482 Laps 4.GTU
19 66 ROYALE RP40 Mazda JM16/097 Jim Rothbarth-Jeff Kline-Mike Meyer 477 Laps 5.Lights
20 55 CHEVROLET CORVETTE Dave Heinz-Steve Zwiren-Don Yenko-Jerry Thompson 472 Laps 6.GTO
21 02 MAZDA RX7 Richard Stevens-Luis Sereix-Roy Newsome-Dale Kreider 453 Laps 5.GTU
22 47 PONTIAC FIREBIRD Steve Millen-Elliot Forbes Robinson-Tommy Riggins 438 Laps 7.GTO
23 72 OLDSMOBILE TORONADO Bob Bergstrom-Gene Felton-Paul Gentilozzi 434 Laps 8.GTO
24 04 JAGUAR XJR7 002 Vern Schuppan-Brian Redman-Hurley Haywood 430 Laps 6.GTP
25 01 ROYALE RP40 Buick JM16/101 Don Bell-Terry Wolters-Craig Carter 406 Laps 6.Lights
26 00 MARCH 83G Porsche 4 Jim Adams-Costas Los-John Hotschkis 402 Laps 7.GTP
27 62 FORD MUSTANG Tim Coconis-Fernando Robles-Chris Marte 368 Laps 9.GTO
28 88 CHEVROLET CORVETTE Jack Baldwin-Bob McConnell-Tommy Morrison-Don Knowles 365 Laps 10.GTO
29 82 CHEVROLET CORVETTE William Wessel-Mark Kennedy-David Fuller-Karl Keck 340 Laps 8.GTP
30 87 CHEVROLET CORVETTE Ron Grable-Don Knowles-John Heinricy-Bobby Carradine 331 Laps 11.GTO
31 29 CHEVROLET CAMARO Oma Kimtrough-Chris Gennone-Hoyt Overbagh-Pieter Baljet 328 Laps 12.GTO
32 16 PORSCHE 962 101 Drake Olson-Price Cobb-Rob Dyson 320 Laps 9.GTP
33 45 HAWK Buick 3 Chip Ganassi-John Paul Jr-Ivan Cappelli-Whitney Ganz 310 Laps 10.GTP
34 83 PONTIAC FIREBIRD Paul Reisman-Bob Hebert-Tom Gaffney-Richard Stone 296 Laps 13.GTO
35 80 ALBA AR6 Ferrari 005 Martino Finotto-Ruggero Melgrati-Almo Coppelli 291 Laps 7.Lights
36 30 CHEVROLET CAMARO Buz McCall-Pancho Carter-Jim Mueller-Tom Sheehy 285 Laps 14.GTO
37  6 TIGA GT286 Buick 321 Charles Morgan-Logan Blackburn-David Simpson 279 Laps 8.Lights
38 33 LOLA T600 Chevrolet HU4 Bard Boand-Richard Anderson-Mike Allen 266 Laps 11.GTP
39 99 TIGA GT285 Ford 294 David Andrews-Steve Phillips-Duncan Bain 244 Laps 12.GTP
40 50 FORD MUSTANG Bill Elliot-Ricky Rudd-Kyle Petty-Ken Schrader 240 Laps 15.GTO
41 56 PONTIAC FIREBIRD Diego Montoya-Albert Naon Jr-Carlos Migoya 238 Laps 16.GTO
42 38 MAZDA RX7 Roger Mandeville-Danny Smith-Diego Febles 229 Laps 6.GTU
43 78 PORSCHE 911 Peter Uria-Larry Figaro-Jack Refenning 203 Laps 7.GTU
44 26 PONTIAC FIREBIRD Ken Bupp-John Hayes-Harlow-Del Taylor 195 Laps 17.GTO
45 63 ARGO JM19 Mazda 107 Jim Downing-John O'steen-John Maffucci 184 Laps 9.Lights
46  3 PORSCHE 962 107B Thierry Boutsen-Oscar Larrauri 176 Laps 13.GTP
47  9 TIGA GT285 Mazda Mike Brockman-Steve Durst-Deborah Gregg-Jim Trueman 156 Laps 10.Lights
48 77 FORD THUNDERBIRD Leo Franchi-Steve Gentile-Rick Knoop 150 Laps 18.GTO
49 10 MARCH 82G Chevrolet 1 Jimmy Leeward-Bill Adam-Chip Mead 123 Laps 14.GTP
50  2 MARCH 85G Porsche 5 Al Leon-Jim Fitzgerald-Harald Grohs-Art Leon 117 Laps 15.GTP
51 54 PORSCHE 911 911 210 0224 Karl Durkheimer-Gary Auberlen-Cary Eisenlohr-Peter Jauker 117 Laps 8.GTU
52 86 PORSCHE 962 109 Bob Wollek-Derek Daly-Bruce Leven 116 Laps 16.GTP
53  4 CHEVROLET CORVETTE GTP T711-HU2 Lew Price-Jim Mullen-Matt Whetstine 104 Laps 17.GTP
54 89 MAZDA RX7 Tom Hunt-James Shelton-Paul Romano-Russ Boy 85 Laps 9.GTU
55 06 PORSCHE 935M16 930 990 0032 Miguel Morejon-Joe Varde-Tico Almeida 83 Laps 18.GTP
56 43 BMW M1 Steve Cohen-David Christian-Tom Congleton 68 Laps 19.GTO
57 90 PONTIAC FIREBIRD Les Delano-Andy Peterey 67 Laps 20.GTO
58 37 TIGA GT285 Mazda 287 Peter Welter-Roy Newsome-Tom Burdsall 66 Laps 11.Lights
59 36 PORSCHE 924GTR Dave Panaccione-Ron Case 65 Laps 10.GTU
60 11 LOLA T616 Mazda HU1 Paul Lewis-Chuck Kendall-Tom Kendall-Max Jones 48 Laps 12.Lights
61 25 CHEVROLET CAMARO Rob Peters-Kent Painter-Tom Nehl-Scott Gaylord 37 Laps 21.GTO
62  5 PORSCHE 962 113 Bob Akin-Hans Stuck-Jo Gartner 29 Laps 19.GTP
63 46 HAWK Buick 1 Whitney Ganz-Ken Madren-Bob Lobenberg 27 Laps 20.GTP
64  0 PORSCHE 962 116IM Paolo Barilla-Randy Lanier-Gianpiero Moretti 6 Laps 21.GTP
65 92 CHEVROLET CAMARO Ash Tisdelle-Lance Van Every-Rusty Bond 6 Laps 22.GTO
66 28 OLDSMOBILE CALAIS Terry Labonte-Harry Gant-Phil Parsons 3 Laps 23.GTO

Cars that did not start

   48 MARCH 83G Chevrolet 1 Don Walker-Brian Goellnicht-Charles Monk GTP
   52 CHEVROLET CORVETTE GTP T710-HU1 Sarel Van der Merwe-Doc Bundy-Wally Dallenbach Jr GTP
   57 NISSAN 280ZX Reed Kryder-Tom Palmer-Fred Staffilino-Rod Whelan GTU
   74 CHEVROLET CAMARO Richard McDill-Bill McDill-Tom Juckette GTO
   18 BMW GTP Davy Jones-John Andretti-Dieter Quester GTP
   19 BMW GTP John Watson-David Hobbs-Bobby Rahal GTP
   21 TIGA GT286 Porsche 325 Ron Nelson-Dominic Dobson-Howard Siegel Lights
   22 BUICK SOMERSET Harold Shafer GTO
   49 PORSCHE 911 Christian Jacobs-Albert Naon Jr-Rudy Diaz GTU
   53 MARCH 84G Chevrolet John McComb-Rick Mancuso GTP
   69 ROYALE RP40 Ford Steve Alexander-Mike Carder-E.B Lunken Lights
   79 ALBA AR5 Chevrolet 006 Skeeter McKitterick-Tom Winters-Bill Koll Lights
   81 MAZDA RX7 Paul Romano GTU
   97 CHEVROLET CAMARO Allen Glick-Innes Ireland-Billy Scyphers GTO

Al Holbert Racing at the end

The first race of the season was the 24 Hours of Daytona, which were to take place shortly after the Space Shuttle Challenger disaster. The important media coverage of this accident stirred everyone's feelings. It really was a national tragedy. As Porsche was expected to dominate the race, the sudden withdrawal of the two BMW GTPs was some kind of bad news. Fortunately, one contender looked able to give the Porsches a run for their money. The Chevrolet Corvette GTP, driven by Sarel an der Merwe, was easily the fastest qualifier. The only contender, during the practice sessions, appeared to be Bob Wollek, who drove the Bayside Disposal Porsche 962. However, it did not seem to reach the Porsche teams, who knew they had reliability on their side. The lonely Hendrick Chevrolet Corvette GTP faced no less than nine 962s. New cars appeared for this new season, as the Joest Porsche 962, with Gianpiero Moretti, Randy Lanier and Paolo Barilla(from Pasta fame). Brun Motorsport had a car entered for Thierry Boutsen, Oscar Larrauri and Massimo Sigala. Holbert Racing fielded his usual car for Al Holbert, Derek Bell and Al Unser Jr. Foyt Racing had entered a 962 too, with Danny Sullivan, Arye Luyendijk and AJ sharing the drives. BF Goodrich had a pair of Porsche 962s for Jim Busby, Darin Brassfield and Derek Warwick, the second car going to John Morton, Jochen Mass and Jan Lammers. The two Group 44 Jaguar XJR7s were the usual contenders, with Bob Tullius partnered by Chip Robinson and Claude Ballot L?©na on the first car, while Brian Redman, Hurley Haywood and Vern Schuppan drove the number 04 car. Conte Racing fielded two March 85G Buick, and John Paul Jr, Chip Ganassi and Ivan Capelli drove the #45 car, Whitney Ganz, Ken Madren and Bob Lobenberg were on the other car. A handful of older and less competitive cars were to be entered, but they would by no means play any major role in that race. It was the case for a handful of March GTP cars , Jim Adams and John Hotschkis drove a Porsche powered 84G, while the Leon Bros had a 85G, also Porsche powered. Lew Price had a Chevrolet Corvette which was somewhat different from the semi-works car. James Mullen and Carson Baird would drive this car with owner-driver Lew Price. An old Lolas T600 was there with Richard Anderson, Bard Boand and Mike Allen at the wheel. It was obvious that the win could not escape Porsche. The question was : which one?

The Lights class had grown stronger, in its second year. A new and very fast Alba AR6 Ferrari was to easily set the fastest time. The car was driven by Carlo Facetti, Martino Finotto and Almo Coppelli. The car was the main attraction of the race, and Carlo Facetti was to spend his time saying no to virtual purchasers! Charles Morgan and Logan Blackburn had a Tiga GT286 Buick, which proved to be a worthy competitor to Jim Downing, who was not eentered. Deborah Gregg had Tiga Mazda, which she shared with Michael Brockman and Steve Durst. Don Bell, too, had a Royale RP40 Buick, and he could do well in such a race. Craig Carter and Terry Wolters co-drove him. Jim Downing, John Maffucci and John O'steen drove an Argo JM19 Mazda, as well as Frank Rubino, Ray Mummery and Tom Schneider whose car was not listed amongst the favorites before the race. The GTO class was becoming more and more exciting as Ford was now facing a revamped opposition. GM getting more and more vexed with the Ford domination, the opposition was strengthening. Oldsmobile, via Rocketsports, had one Toronado, driven by Gene Felton, Paul Gentilozzi and Bob Bergstrom while the Calais was in the hands of Benny Parsons, Terry Labonte and Harry Gant. The NASCAR men were present by the Ford side with Bill Elliott, Kyle Petty, Ricky Rudd and Ken Schrader. The race seemed to feature a Ford-Oldsmobile duel while no Chevrolet seemed to be able to give the Detroit iron a significant opposition. A BMW M1, driven by Steve Cohen, David Christian and Ed Congleton, added a little diversity to the field, as well as the two Morrison-Cook Chevrolet Corvettes, which were experimenting new technologies for the future. The GTU class brought no excitement, this time being much more of a Mazda parade. It looked obvious to the IMSA spectator that the fields were getting weaker, especially in the smaller class. Roger Mandeville and Tom Kendall could fight it out for the win, while Amos Johnson awaited another class win. A single Porsche 911 would take the green, as well as a 924, entered by Ron Case. A sign of times?

Before the start of the race, one conclusion : the change in the rules did not seem to be in favour of the home made products, much to the spectators' dismay. The start of the race was another disappointment for the spectators with the Chevrolet Corvette GTP not showing up on the grid. The car was being struck with vibrations, the replacement of the transmission costing at least three hours, the team withdrew the car.

Al Holbert, Derek Bell and Al Unser Jr took a very close win.

The start of the race saw Drake Olson quickly escaping from the rest of the field. Obviously he was not running the same race as the other competitors. After one hour, Drake Olson was always in the lead, with other Porsche 962s on the same lap. The Joest car had been delayed, as the Brun Motorsport car and Bob Wollek, who experienced turbocharger problems (a line making the connection between the turbo and the engine broke). The race quickly appeared to become very tough for the Porsche squadron, with Al Holbert losing five laps when the team discovered a crack in the left-rear brake, Jan Lammers losing ground on the leaders. Hans Stuck retired after hitting the wall from the rear, which was triggered by a supposedly broken wheel. The Bayside Disposal car tangled with a slower car on the banking. A yellow flag session was set. The BF Goodrich car driven by Jochen Mass, Jan Lammers and John Morton felt out of the race after a fifty five minute stop for clutch repairs. By mid-night, one half of the Porsche 962s were out of contention. The new Jaguar XJR7s suffered from various transmission and suspension troubles, which were probably due to the stiffer chassis. Just before dawn, the Al Holbert car, driven by Al Unser Jr, had to replace a throttle cable, to find itself twenty two laps down the leaders.. As the BF Goodrich was in the lead, the car broke a half-shaft. Then Darin Brassfield lost a cylinder, a nosepiece and had fading brakes. The Preston Henn Porsche led by now, but soon was to also experience problems. They had to replace a turbocharger wastegate and fix an oil leak. By now, the two cars were nose-to-tail, but the Holbert car, which was then in third place, took advantage of the two leading cars troubles. The end of the race was kind of heroic for everyone, with Al Holbert, Derek Bell and Al Unser Jr winning by just one lap over AJ Foyt, Danny Sullivan and Preston Henn. The BF Goodrich car was third, ten seconds behind the TBird Swap Shop car! Jim Busby, Darin Brassfield, Jochen Mass and Derek Warwick had a disappointing third place. Fourth overall and in GTO was the Roush prepared Ford Mustang driven by Lanny Hester, Maurice Hassey and Lee Mueller, who overcame the Scott Pruett, Bruce Jenner and Klaus Ludwig works car, who lost a great deal of time to repair an oil leak. The GTU class was taken by Amos Johnson Dennis Shaw and Jack Dunham who drove the Team Highball Mazda RX7 to a second victory in a row. They placed eighth overall. They had to wait until the CCR Racing car, driven by Tom Kendall, Bob Reed and John Hogdal, collapse in the final stages of the race. The car took a tenth place at the chequered. The Lights class race had turned into a disaster for every favorite, as each car had to retire one by one. At the end, it was the Argo JM19 Mazda driven by Ray Mummery, Frank Rubino and John Schneider who took a very unexpected win. A dream come true, as Ray Mummery put it later. No Tiga would cross the chequered.