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I tried putting an early 9 1/4 anti-spin case in an 85 9 1/4, and IIRC, the axle slid into side gear fine, but the 85 C clip outer diameter would not drop into recess of side gear. I believe the axle shaft button also was dofferent in thickness. I do not know when actual change was made yearwise.


I've heard that before, but don't have any info on it. Wonder if you just gotta keep the early axles with the early center sections? Also curious if it has anything to do with the cone clutch set up verses the disc type clutchs?


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