I purchased a 3:55 ring and pinion for my F350.
I have called the dealers and asked about a shim kit to set up the new gear. No one knows about a shim kit.
I guess shims are available but who know which ones are required? Ford dealers don't.
Does anyone out there know what I need?
Vetteracer  

I would go to a transmission & axle specialist and have them set up the rear end. Definitely <strong>NOT</strong> something I'd suggest you do yourself unless you're experienced in it.

If you don't shim it and set it up properly, it could cause premature rear-end failure, and a lot of strange noises.