Anyone have trouble with the southside lower rear trailing arms causing bad vibration due to the pinion angle change? :confused:

I have had SSM bars on two Chevelles and no vibrations. I did have a vibration before the bars when the upper bushing on the differential needed replacing.

Only vibs i get is when one of my exhaust hangers breaks and it starts touching a part of the car. Makes a bad vib. IS it only @ idle or when your going or what?? If its @ idle you might want to make sure your exhaust is all good, those rubber pieces break pretty easy since they take so much abuse.

At about 65mph, I get a fierce vibration :eek:
My pinion angles are out of whack. The bars shift this somewhat, but I really saw the problem after the Muncie was installed :mad:
As long as I am WOT, no problem. Only when I am cruising at about 3200rpm. I am going to order some adjustable rear upper trailing arms and correct the pinion angles. I was just wondering if anyone else was running the adjustable uppers with the southside bars. The SS bars are nice units, my holeshots are smooth as silk, it's just that the local authorities frown on me leaving every stoplite at 6500RPM graemlins/clonk.gif

You're suposed to set the pinion angle when you install the SSM bars. The directions on that blew, so I didn't bother. I have BMR adjustable uppers.

Without adjusting the uppers, I ended up at 0 pinion angle. So the pinion and trans tail are parallel to eachother. I still haven't bothered to go under there and adjust the arms. I want to put the pinion down 3 or 4 degrees.

Did you check your angle? What is it at?

Tim.