Stiff rear suspension on my GS

[TomGS72@aol.com]

The rear suspension on my 72 GS is really stiff. It doesn't seem to want to transfer weight at all. I noticed this after I put polyurethane bushings on all 4 corners. I pulled the shocks off and set them at 30-70 from 50-50. This helped a little. While I had the shocks off, I pushed on the rear suspension and it was very stiff.

Did I do something wrong while installing these bushings?

I had 1.53-1.57 60's before with 50-50 shocks and stock springs.
I now run 1.59-1.63 and have boxed control arms, 30-70 setting shocks, Moroso Trick springs, air bags, and polyurethane bushings.

Thanks!

Tom Jenkins

[GS-XNR]

Here's one thing that may be the problem. You should let the car down with full weight on the rear end before doing the final tightening on the bolts. If you didn't, loosen the nuts with full weight on the rear end and then tighten again.
Harvey

[TomGS72@aol.com]

Thanks Harvey!

I will try that. I tightened everything with the car in the air.

Tom Jenkins

[65Lark]

Dont overtighten the bolts. If you squash the mounting brackets in they will bind the suspension more than the polycrap bushings already do.

[72GSX]

Hi Tom, I changed my stock upper arms from stock with poly bushings to tube type uppers with a 3/4" rod ends and it is a whole different driving car. I also want to build some lower arms with rod ends some day. I have no-hop bars so I cut the one side off where the arm goes so they are flat on both sides and bolted the rod end to them. I got the idea from the Dick Miller setup. Tom