OK guys. I spent 50 bucks on a wheel balance and its still vibrating at 75mph. I had the driveshaft balanced when I put in new u-joints about 1 1/2 years ago. I dont think its the front end because the steering wheel is straight and a lot of that was replaced when I was in an accident 2 years ago. Its more like a hum than a vibration, but you can feel it.

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90 Black Formula
5.0 TPI 5spd lotsamods

 

Rear axle bearing??

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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

That's what it sounds like to me. That or rear wheels lost there balancers. Or if you have firestones......

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, Jon (91 RS too many mods to list), getting new engine in summer