Posted By: dartgame
8 1/4 axle rebuild questions - 09/21/18 12:19 AM
Planning on swapping in a set of good used 3.55 gears into a 70 B body 8 1/4 axle which has 2.71’s in it now. This axle assembly will be going in a 52 plymouth powered with a flat head six. So the 8 1/4 will be more than stout enough for the end use.
I’ve not rebuilt an 8 1/4 before, done 8 3/4’s....but not changed the gear.
Figure I will need to replace bearings and so on.
Maybe a stupid question to those in the know, be kind. My question is about the pinion gear shim(s) and setting the pinion depth. The donor 3.55 set has the old bearing still on it. Will the shims on it when used with a new bearing get close to being the right depth for the pinion or are the 2.71 shims a better bet ?
I’ve not rebuilt an 8 1/4 before, done 8 3/4’s....but not changed the gear.
Figure I will need to replace bearings and so on.
Maybe a stupid question to those in the know, be kind. My question is about the pinion gear shim(s) and setting the pinion depth. The donor 3.55 set has the old bearing still on it. Will the shims on it when used with a new bearing get close to being the right depth for the pinion or are the 2.71 shims a better bet ?