Mopar A body suspension settings are a well discussed Subject. With us expecting more out of a 50 year old design, it can be done.
I relate my findings.
The first requirement is to get all components new or in good condition.
I have a new power Chuck and have not gone to rack -I want to retain originality (or within reason)
I have a bearing Idler arm. Good improvement!
I wanted to maximise positive caster and with eccentric Moog bushes could only get about +2 Degrees.
So what to do next - I carefully measured everything -and found no alignment issues(crash Damage) and not faulty components.
My finding-- if the radius rod is shortened (a temporary turn buckle) 2.5 Degrees extra caster can be obtained and I still have 2 deg on the UCA cams (maintaining some camber adjustment.)
However all A body Radius arms are the same length --not so, I found a very early set where 12mm shorter and this intrigues me and it should fix this lack of caster problem!
Note I could go to an after market adjustable radius rod but I do not think they are road legal in NZ and we drive some very valuable cars!
Regards
Gavin
I now think after reading the web based LVVTA pages, after-market pivoted adjustable radius rods are OK, providing the connection points are not altered and the component is a catalogued part from a reputable company -anyway read it yourself!