Originally Posted by sununix69

Ok I had this problem with my car also. I had Stock WS6 Rims, F1's and a Random Tech Torque Arm. This started after 18K miles or so on my car and only between 65 to 75 mph. It was so bad it would knock the wheel weights off the car. So I replaced the following parts and the vibrations is STILL there

Replace Drive Shaft no go
Replaced Tranny Mount with Poly, no go
balanced wheels over 8 times no go
alignment redone, no go
replaced rear wheels with known good working wheel no go
replace rear end form stock to Ford 9 inch with 4.11's no go
Changed front sway bar, no go

I am at the end of my wits, what else could be causing this VIBRATION!! Sorry just a little mad that even after replacing all the above still no go, should I change out shocks and springs? change out tranny alltogether? I am lost I had a 01 SS with ZERO problems, this damn TA is pissing me off.

Please help!

Thanks