I'm sure this is a thread that has already been covered at some point but...
A few months ago, I installed a set of lower trailing arms in my 90 GT, after which, I discovered a vibration through my shifter at about 60mph, especially under exceleration. I had no vibration before the change.
I was told I had probably altered my pinion angle, therefore I installed a set of adjustable uppers.
I've since corrected the angle.
Although the vibration has reduced a bit, it is now more severe at 70mph+, regardless of exceleration or deceleration.
It sounds like my driveshaft is out of balance, but it was fine before the trailing arms were installed.
I've heard the new urethane bushings could magnify a driveshaft balance issue otherwise disguised(dampened) by the soft, stock rubber Ford bushings. That sounds like a bit of a stretch to me.
Has anyone experienced this problem or have any input?
A few months ago, I installed a set of lower trailing arms in my 90 GT, after which, I discovered a vibration through my shifter at about 60mph, especially under exceleration. I had no vibration before the change.
I was told I had probably altered my pinion angle, therefore I installed a set of adjustable uppers.
I've since corrected the angle.
Although the vibration has reduced a bit, it is now more severe at 70mph+, regardless of exceleration or deceleration.
It sounds like my driveshaft is out of balance, but it was fine before the trailing arms were installed.
I've heard the new urethane bushings could magnify a driveshaft balance issue otherwise disguised(dampened) by the soft, stock rubber Ford bushings. That sounds like a bit of a stretch to me.
Has anyone experienced this problem or have any input?