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  7 FORD THUNDERBIRD Darin Brassfield 121 Laps 1.GTO
 2 99 TOYOTA CELICA Chris Cord 119 Laps 1.GTU
 3 38 MAZDA RX7 Roger Mandeville 118 Laps 2.GTO
 4 76 MAZDA RX7 Jack Baldwin 118 Laps 2.GTU
 5 53 MAZDA RX7 Danny Smith 117 Laps 3.GTO
 6 65 FORD MUSTANG John Jones-Wally Dallenbach 117 Laps 4.GTO
 7 71 MAZDA RX7 Amos Johnson 116 Laps 3.GTU
 8 90 PONTIAC FIREBIRD Andy Peterey-Tommy Riggins 116 Laps 5.GTO
 9 51 CHEVROLET CAMARO Jerry Kuhn 114 Laps 6.GTO
10 17 MAZDA RX7 Al Bacon 114 Laps 4.GTU
11 55 PONTIAC FIERO GTU-001 Bob Earl 113 Laps 5.GTU
12 29 CHEVROLET CAMARO Chris Gennone-Hoyt Overbagh 108 Laps 7.GTO
13 23 PORSCHE CARRERA RSR Bob Hebert-Paul Reisman 105 Laps 8.GTO
14 84 PONTIAC FIERO Clay Young 104 Laps 6.GTU
15 85 PONTIAC FIREBIRD Richard Valentine-Eppie Wietzes 97 Laps 9.GTO
16 18 MAZDA RX7 David Yarmoluk 84 Laps 7.GTU
17 32 NISSAN 280ZX Tc George Alderman 83 Laps 8.GTU
18 98 TOYOTA CELICA Dennis Aase 82 Laps 10.GTO
19 96 PORSCHE 914/6 914 043 1523 Bruce Jones-Leo Bottari 76 Laps 9.GTU
20 22 PONTIAC FIREBIRD Del Taylor-John Hayes-Harlow 73 Laps 11.GTO
21 89 PORSCHE 914/6 470 29 00076 Ray Hendricks-Bruce Jankowitz 63 Laps 10.GTU
22 08 MAZDA RX7 Paul Romano 62 Laps 11.GTU
23 10 CHEVROLET CORVETTE Peter Andrighetti-Richard Stone 60 Laps 12.GTO
24  9 NISSAN 280ZX Reed Kryder 57 Laps 12.GTU
25 27 PONTIAC FIERO George Smith 48 Laps 14.GTU
26 11 MAZDA RX7 Helmut Silberberger 43 Laps 14.GTU
27 46 PONTIAC FIREBIRD Gene Felton 19 Laps 13.GTO
28 54 MAZDA RX7 Steve Zwiren 17 Laps 15.GTU
29 47 PONTIAC FIREBIRD Tommy Riggins 1 Lap 14.GTO
30 82 NISSAN 280ZX Llewis Baldwin 1 Lap 16.GTU
31 39 PORSCHE CARRERA RSR 911 720 0114 George Hulse 1 Lap 15.GTO

Cars that did not start

   02 CHEVROLET CAMARO Chris Gennone-Hoyt Overbagh GTO
   07 FORD MUSTANG Lyn St James GTO
    2 PONTIAC FIREBIRD Ted Sullivan-Jeff Jones GTO
    4 MAZDA RX3 Keith Minkhorst-Phil Strudwick GTU
   16 PORSCHE 914/6 914 043 0754 Paul Resnick GTU
   36 PORSCHE 911 Ron Case GTU
   86 BMW 2002 Kermit Upton GTU
   95 NISSAN 300ZX Bob Leitzinger GTU

Darin mastered it

This would be another Ford versus Toyota versus Pontiac battle, with Ford dominating the field, however. From the onset, Roush racing was setting its mark on the GTO class with a pair of mighty Ford Mustangs. They had not been beaten in the 1985 schedule. However, things would have to change, according to Toyota. Dennis Aase would win the pole in the turbocharged car, and he was just ahead of Darin Brassfield, who drove the Brooks Racing Ford Thunderbird.

Darin Brassfield had a race of his own.

John Jones and Wally Dallenbach Jr were in third place, followed by Chris Cord, who was a stunning fourth overall in his GTU Toyota Celica! Thirty one cars were entered and would fight it up on the twisty little track. The race would have to be exciting, with the Dingman Bros Pontiac Firebirds waiting for their time. Gene Felton and Tommy Riggins were at the wheel. In GTU, Mazda was outnumbering the field, but they had to really count upon the Toyota Celicas and the new Pontiac Fieros. Jack Baldwin was leading the GTU class and determined to stay on top. The start of the race saw Dennis Aase take the lead, followed by Darin Brassfield who remained on his heels for a while. The two drivers were running close to their qualifying times, until the first caution period. At the restart, Darin Brassfield took the lead while Dennis Aase was experiencing brake problems. While Darin Brassfield kept the lead, he was keeping a more relaxed pace, until the first pit stop for refueling. He was the first to stop, with an empty pit lane in front of him. He would restart one lap down the leaders, who had to pit very soon. Then John Jones would stop and lend his car to Wally Dallenbach Jr, but the drivers change led to an ignition switched off. The car had trouble to restart, and a lot of time was lost in the process. Wally Dallenbach Jr wasn't running for the lead anymore, with four laps lost. Dennis Aase would challenge Darin Brassfield until lap eighty two, but the turbo broke an exhaust header, and his race was over. The leader then had to cruise to a somewhat easy victory, finishing two laps ahead of Chris Cord, who won the GTU class! The latter had a perfect race, with a car that was simply perfect on this track. He lapped the entire GTU field and was ahead of Roger Mandeville in his GTO Mazda RX7. Tommy Riggins would not last more than one lap while Gene Felton's race was over after nineteen laps. Bob Earl lost some time in the pits, coping with an oil leak. Mazda took the next three GTU spots, with Jack Balwin finishing in second place, followed by Amos Johnson and Al Bacon. The perfect race for both winners.