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I have factored in the Caster angle according to how the springs are mounted. I was thinking, i can just lean the spring perches back a little bit, to get the correct caster angle. Or not a good idea??


yes, you can. but realize doing so sacrifices precious driveshaft angle (which is usually in short demand with isuzu SASs).

without going through the trouble of removing the knuckles and setting your own numbers, its a balancing act between existing caster and pinion angle.

if you're 4" difference, my advice would be to address this now. play with different shackle lengths like mike suggested or rework your hangers.

-Rob