First 8.75 build. Plz Help

805moparkid said

so the shims are to adj backlash and whatnot? or just to set preload?

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The outer shims set the pinion gear preload and the inner shims set the pinion gear depth in relation to the ring gear.

If you're looking for a real good step by step overhaul and setup procedure for the 8 3/4's contact "lhearold" and he'll send ya a CD.