There is a little known trick to gain more caster by modifying the lower control arms pivots shafts. The hole on the shaft dictates the location of the entire lower control arm. It can be relocated further back, pushing the control arm forward, gaining almost 3-4 degrees more caster. Position it on the bottom perches and move for and check for clearance on the bushings, stops and all parts that move with it. Mark a spot back 3/8th of an inch or more, grind a tiny flat spot, drill a new hole starting with smaller to larger drill bits. It will fit the pin and the perch while placing the lower control arm further forward. This is extremely helpful for steering feel if adding power steering and aids in returnability. I am sure you are long done with this build, but others may benefit as well having less shims, no expensive aftermarket control arms and you don't need a drill press. Settings; Right 4 degrees Left 3.3 Best of luck! ASE Master tech since 1978, retired. (I was looking for part 4 of the firewall build)
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There is a little known trick to gain more caster by modifying the lower control arms pivots shafts. The hole on the shaft dictates the location of the entire lower control arm. It can be relocated further back, pushing the control arm forward, gaining almost 3-4 degrees more caster. Position it on the bottom perches and move for and check for clearance on the bushings, stops and all parts that move with it. Mark a spot back 3/8th of an inch or more, grind a tiny flat spot, drill a new hole starting with smaller to larger drill bits. It will fit the pin and the perch while placing the lower control arm further forward. This is extremely helpful for steering feel if adding power steering and aids in returnability. I am sure you are long done with this build, but others may benefit as well having less shims, no expensive aftermarket control arms and you don't need a drill press. Settings; Right 4 degrees Left 3.3 Best of luck! ASE Master tech since 1978, retired. (I was looking for part 4 of the firewall build)