Recent content by boss49472

Spring Dynamics in Almont Michigan Also, check with Blue Oval Car Barn, they have a few pairs from this run of parts

I also made this neat installation tool

Spring Dynamics Inc. in Almont Michigan. Check with Blue Oval Car Barn, A couple of pairs of springs were also made for them by Spring Dynamics

spring dynamics in Almont Michigan. Also check Blue Oval Car Barn, Spring Dynamics made a couple of sets for them

Took a little time to solve this issue and produce a vintage correct solution. The heavy duty torsion bars for the cars with spoilers are 0.225" nominal diameter "music wire" material (ASTM A228 material spec.). The ones I had made are 0.236" diameter as this size is in production on a Ford...

Does anyone know the material specification (AMS or ASTM) Ford used for manufacturing trunk lid torsion bars? I had a set made for my 1972 fastback with sport deck using ASTM A853-19 steel and they are not strong enough. BTW the aftermarket bars that were available several years ago are 0.200"...