Quote:
Originally Posted by hgerhardt
There was a '10-bolt' with an 8-7/8" ring gear that was used on '73-'77 A-body wagons. Our '76 Buick A-body wagon had one.
Factory gears for that ranged from 2.56 to 3.23.
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These did come in some GPS. My 75 has one from the factory. Aftermarket support is zero. Shame because they’re pretty strong. Mine has 31 spline axles but has C clips. Steepest gears are 3.42. There used to be a machine shop in Texas that made 3.55 gears for these to fit the most common 2.78-3.08 carrier. I upgraded mine from 2.56 open to 3.23 posi but searched for years to find good used gears and rebuilt carrier.