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Re: TF front axle shims?
I have the box that mounts outside of the frame. I bought the CPP kit a few years ago before I knew better, I don't recommend it. It has some bump steer which I think is caused by the short drag link. I could possibly move the box to lengthen it and help some but I've already made up my mind to get rid of the straight axle after the first of the year..
When driving down a straight smooth road it tracks fine. I do think the caster shims helped that. My front springs are original as far as I can tell but have sagged to the point that my truck has a slight forward rake. The springs are almost straight, with about 1.5 inches between the bump stops. If it originally had 1.5 degrees of caster as specified in the service manual, I think the rake would have negated that, so that the 6 degree shims would give me an actual 6 degrees of caster. I would have to take it to an alignment shop to find out exactly but since I'm going to dump the axle I won't bother to do that.
BTW: I think I have read somewhere that they increased the caster to 4 degrees when the truck had power steering, but can't remember where I saw it.
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