A-bodies are awesome because they come with factory 4-links. With the right bushings, shocks and springs A-bodies and G-Bodies can ride as well as a new Mercedes-Benz. If you chose an A-Body rather than a Leaf Spring-equipped F-Body, you are ahead of the game.
The original design relies on flex within rubber bushings for articulation. Many upgrade kits substitute poly which is a fundamental error. During bind, either the poly bushing fails or the frame side mount flexes. Some have created braces for the frame side mounts to resolve the flex -- which is compounding the mistake rather than addressing the original issues and meeting true performance goals:
A-Body/G-Body Rear Suspension Goals:
-- Improve Articulation.
-- Harness modern power potential and available traction.
-- Minimize flex (rubber bushings)
-- Eliminate premature wear (rubber bushings)
-- Eliminate stiction (old seized-up rubber bushings and poly).
-- Prevent inducement of binding (Poly bushings)
-- Eliminate the need or for frame mount bracing
-- Prevent inducement of noise (poly bushings squeak)
-- Minimize maintenance (poly bushings need greasing)
For RideTech, the fix is to replace all link points with R-Joints. They articulate exceptionally well without flex or noise -- and they are self-lubricating, so virtually maintenance free. Ride quality is truly awesome when combined with our shocks an a good set of tires (within usage date)
You can see how it all works together in our TruLink kit, or replace just the upper axle bushings. You can always upgrade in stages. Our heavy duty arms are an important piece of the puzzle.
Here's a pic of the complete kit. See more details here:
TruLink Rear Suspension for A-Body
Thanks for lookin'
Steve