A833 O/D gears in an A833 1:1 ?

DaveBonds said

This is the slice of info I was after. bearing I.D. Thank you, kind sir!

This means I can use whatever A833 I want with the O/D gear set and shafts I picked up. That's what I suspected. The machining is the same, then, with a difference in bearing O.D. Some big block trans used the 308, some didn't.

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Sounds like you already figured it out, but I figured I'd second or third.

833OD guts can be switched into any case. You have to switch them as a whole, mainshaft, countershaft, etc. But you can put 833OD gears in a cast iron 833 case, or 833 gears in an aluminum 833OD case. Just get the appropriate bearings for the case you're using and you're set.

What you can't do is mix and match gears from 833OD to 833. The internals have to be kept together. But the cases can be switched.