M37 diff.. latest LARGE Diff


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Posted by DDD [172.70.214.188] on Wednesday, November 09, 2022 at 09:15:03 :

In Reply to: Re: Yes� 3gaskets posted by Vaughn [172.71.154.139] on Tuesday, November 08, 2022 at 11:40:12 :

So it’s got to be 4 pinion correct?

I thought 2 pinion carriers were early half ton only diffs.

That’s what I had in my wc12 and what I replaced.
A 2 pinion carrier with triangle cutouts in tye case, the weakest of the diffs.

As far as me requiring to cut off 1/2” in to make these fit into the diff without binding AND sit flush against the outer rear axle housing outer hub, it was necessary

I tried 1/4”. Not enough. I tried a bit more. Not enough.
Until I reached one half inch removed would it fit nicely.

I even removed one axle shaft from my wc51 project and slid it into the housing to confirm indeed I needed to remove that full half inch off the axle. Fully seated, there was at least .50 left of a gap at the outer hub

What could I have done wrong? Nothing.

It’s kinda funny how few guys have commented on this. I rember way back oh, about 30 years ago, when I first did this swap. There were many who also did it then and the info seemed to be more



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