Vibration at 80mph
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
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
Torque Arm - G2
LCAs - BMR w/ relocation brackets
PHR - BMR
Tires - F1 GS-D3 275/40/17 with Road Force balance, crappy, gonna get redone
Front end alignment - crappy, gonna get redone
Driveshaft - Denny's HD Steel (made it a little better)
Tranny mount - polyurethane
Springs/Shocks - SLP Eibachs / Bilsteins
Vibration started when I added the wheels (Boyd Coddington) and tires (Kumhos). I have had them rebalanced countless times and rotated from front to back countless times. No vibration in the front, only from the rear.
I am gonna check the shocks for leaks in a couple of weeks.
