I'm out of ideas. But I sure am interested in knowing the cause and solution to this problem!
One last thought....
I once had a similar problem on a chevy monza. Balanced and re-balanced the tires, but a high speed vibration would not go away. Turns out that one of the tires was not round. I noticed it when the car was jacked up one day and I spun a wheel and I could see the out of round. Balanced, but out of round. Replaced the tire and the problem was solved.
Ok, now I'm out of ideas......
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1998 Firebird Coupe
Mods: 3.73 Gears, Eaton TrueTrac, PCM Tune, LS1 Aluminum Drive Shaft, Cold Air Intake, 180 Thermostat, Magnaflow Cat-Back Exhaust, Moog LCA busings.
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Last edited by Mark42; 03-05-2010 at 05:47 PM.
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