I just got a set of 3.73 gears for my 78! The posi unit is from a 78 trans am with 2.41 gears. So if I understand correctly, I can use the 3.73s on that carrier with the use of a spacer? Thanks
I agree- Having a honed pinion bearing to setup the pinion depth saves a lot of messing around.If the 41 tooth 3.73 ring gear is thicker than the 41 tooth 2.41 ring gear on the posi, you may have lucked out. You'll still need the matching 11 tooth pinion from the Blazer. Mock it up and try it out. I use a honed out bearing test set for trial fits so I don't have to press the bearings on and off. Since you have two setups, (and you should buy new bearings, crush sleeve anyway), you can use one of the old sets as a mock up set. Save all the old shims even if you don't use them.