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Old 05-12-2016, 06:08 PM   #180
69gmcc10
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Join Date: May 2011
Location: Missoula, MT
Posts: 934
Re: My caster mod (with pictures)

Quote:
Originally Posted by BMERDOC View Post
I have been thinking about elongating the upper cross shaft locating holes for finer adjustments, leaving the shims only for camber adjustments (1/8" of motion would equal .5 degrees of movement). I need to go back and look over your math and Scoti's alignment numbers.
I spoke with an old hot rodder/racer about this the other day about this and he said the uppers see so much force under breaking that it would probably shift. My uncle was a front end mechanic for chevy for 30 years. I told him what I was doing and the upper arm shaft idea and he suggested to fine tune the uppers he would unbolt the shaft from the studs and twist it. He said he used to do it all the time and each turn on the shaft is just under 1/4" forward or backwards off the top of his head.
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