One really needs to see the parts when “wobble” is taking place (which is a bit more difficult than it sounds), to know where the problem is exactly.
I’ve heard a bunch of people who removed the ISO-clamps said car feels much better. Not a person has said it wasn’t worth the effort.
Before 1973 (or thereabouts), All Mopars didn’t have rear Iso-clamps nor the rubber bushings between K-frame to chassis (except for full size on the later).
(Correction: all 1967 and up Imperials and some 1970 and up C-bodies did have a slightly different rear Iso-clamp system.
Blue is non. Red is Iso-clamp.
One way to get rid of the Iso-clamp is to purchase shock plates from an older Mopar and replace the Iso-clamps with 'em. There are instructions for this, if you Google it.
There are three different popular factory (non-Iso) shock plates out there.
‘70 E-body is by itself (the shock stud is in different position).
The rest share two different styles: one for 7¼“differential, and everything else.
The 7¼” has a smaller diameter tube. I know ’64 (and maybe older) to ‘73ish works.
It should look like this, with the small hole in center.
One thing to keep in mind, is if you go to older style shock plate, your lower end of shocks are different (but, hey, you need your shocks replaced anyway).
I bought one set of shock plates on eBay a while back for $100 US (a bit more than I wanted to spend), but I need another set.
I wonder if a person could make a set by using the upper part of Iso-clamp plate (for shock and/or sway bar attachment) and make a lower plate yourself using steel plate?
From FFI
Iso-delete kit, also from FFI.
