[Big70]

Originally Posted by gmc684x4

70 to 82 are 30 spline
I am guessing 67 to 69 are as well

67 to 82 12 bolts take the same axle seals and bearings
On the earlier 63 66 ones i am not sure

I never counted splines last time i changed axle seals on my 68

63 to 66 are a course spline from my understanding

On earler open diffs easy as changing spider gears to a 30 spline from what i have read

Are you looking to switch to 5 bolt axles ?

No sir. Just trying to make sure that I buy all the right bearings and seals. How could you tell that it’s built in 67? I have a 12 Bolt in there right now that I hurt. I just acquired this 12 bolt with 373 gears that I want to put in there with all fresh seals and bearings.