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  1. Weak440

    Do "NOS" gears have lapping compound on them?

    So, I was telling a local junk yard/collector about how I would like to find a set of 3.23 gears. Well, supposedly He found a "NOS" set. I was skeptical because they claim to be "coated with the factory yellow lapping compound "... That sure looks like the marking compound used to set up the...
  2. Weak440

    489 Third member Build - update - Cant set back lash - Need advice

    I am working on building a 489 center seciton with 3.55 gears and a new Eaton Posi. This is the first time I have tried to rebuild one of these so I am taking my time and learning ALOT. I am working on sitting the pinion depth and have ran in to a couple of issues. The first time I pressed...
  3. Weak440

    Pinion bearing install question...

    I am working on building a 489 with 3.55 gears. My question is about the small pinion bearing (nearest the yoke). I honed the large bearing (the bearing furthest from the yoke) and slipped it on to the new pinion on top of a .031 shim. For a starting point, I measured the legth of the old...
  4. Weak440

    Cast aluminum transmission pan - Anyone run one?

    Does anyone run a cast aluminum pan on a 727? Do you have any problems with them leaking?
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