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Morning - Looking to see if I can get someone to confirm my assumptions are correct. I made a deal with myself that I would not buy injectors, RR fuel system and a turbo until my trucks steering is fixed. I have replaced every suspension component on this truck except for the rear leaf springs which will be done soon. I am looking to correct the caster angle so I get a better return to center. From what I can tell I have roughly 4.7 degrees of NEGATIVE caster which seems like a lot?(front pinion pointed up). Is that correct? My plan is to get this on a rack to get an official number but I want the leaf shims there so the alignment shop can install them as needed.
Im not sure I understand. If they sell 1 degree to 5 degree shims to go under the leaf springs then the axle angle would need to relate somehow. The balljoints on the driver side have no adjustment bushings. The passenger side have a small adjustment present to compensate for the crown in the roads.
I would rather go into the alignment with some knowledge rather than allowing the inexperienced tech tell me what he/she thinks. The lack of decent shops in the area makes me want to have a general idea instead of just throwing them the keys.
Measure castor at the steering arms, not the pinion. Like Cody said, pinion angle and castor angle are not the same thing, and the relationship between them is fixed by the tubes being welded to the diff housing. If you increase castor (raise the steering arm), the pinion will go down, so you can't just increase castor to any number you like.
If your truck is really stock, and not lifted, why are you thinking you need a castor angle change?
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