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Re-gearing GM IFS diff.

Depends on which of the last 30years of ifs axle you have. General up till 07, no, nothing specail needed.

Its just a pain in the dick to read and adjust the gear pattern. You ha e to put the case together and view it through the breather hole. Back lash is esentialy by feel as per you cant measure it when assembled and it has to be assembled to check.
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07+, 2014 to be exact.

My biggest concern was reading the pattern and BL after the halves were put together.

But it does sound like I’ll need something special for the 07-current diff?
Been my experience that GM OEM gears don't leave a pattern like seen in manuals...
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