A833OD with worn output spline

opnwhlracer said

I'm beginning to think the slip yoke splines on the cast iron OD units are a little different than everything else. I bought a new yoke from Brewer's and it fits my '68 A-body unit perfectly, but on my cast iron OD shaft the new yoke will go on about two inches VERY TIGHT and then stops, and I have to use a rubber mallet to get it back off. Both are 30 spline. And you say you have a new yoke that fits your OD shaft too loose? I am very confused.

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10/4, I have a spare non OD 833, and my yoke fits it fairly sloppy as well, but it is brutally loose on the OD shaft. There is another thread on here that I have been following where a fellow has had some similar fitment issues whereas his new yoke is too tight on a 727. The main issue appears to be quality control issues on the part of the slip yoke manufacturers regarding tolerances. That being said, I wouldn't be surprised if the factory tolerances on the shaft were less than stellar. None of this would be a problem if I weren't spinning the drive shaft at 3300 RPM plus at highway speed. I feel as if I am on the verge of a solution, and if so will share the results so we can all learn.