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Took some measurements of axle tube opening.

Temporarily put carrier in. I’m wondering if axle bearings have to be changed out for the sealed kind.

Latest on crazy 12-bolt. Mock assembled differential after extracting inner seals. Now axels move in and out of carrier about 1/2” on both sides. Any suggestions? Thanks

Just pulled the inner seals from the axle flanges.
Seeing that two different sets of axles seals were installed can either set of bearings (sealed or open roller) be used?
There is no code on the inner passenger side tube, driver side also checked, to tell what year or gear ratio.

Jim thanks for all your time and information. It is greatly appreciated.

Does PowerTrax make a unit that fits in the carrier?

More pictures. Bearing race.

Ok here’s another question. Are these the correct axle bearings and seals? When bolted in they were not flush with the flange and there was no gasket. The flange plates are raised between the bolt holes because of being tightened down and not being flush.

Jim thanks for responding.
So this is not a super secret Oldsmobile experimental racing only 5.00 ratio 1of1 442 W30,W-27 posi? Darn! 🤪
I do like the uniqueness of the set up. I’m building the car to be for street cruising and an occasional jaunt to the track. With the differential apart now I just ...

More pictures to previous post. I can only assume it is a 402227 housing.

IMG_1830.jpeg I bought this differential for my 1967 Cutlass Supreme Convertible. The 5.00 gears are too steep for me, even with a 200-4R. From the research i’ve done the 672 carrier has a range of 3.42 to 5.00 and has 31 splines. After disassembly I noticed that the axles are 28 spline. Is this an ...