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Welding 1-Ton Eaton Spider-gears?

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by OrangeCrushK10, Jan 3, 2005.

  1. OrangeCrushK10

    OrangeCrushK10 1/2 ton status

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    Is it possible? Anybody done it? I haven't dug into my Eaton yet, but I was wondering, if they're similar to the 14bolt FF like everybody says then it would seem that I can.

    Any other thoughts on the subject, or should I just end up gutting the Eaton and replacing the internals with 14bff stuff?

    Post me up some thoughts!
     
  2. supersize75k5

    supersize75k5 OrganDonorRacing.com

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    weld away!

    :grin:
     
  3. k5floyd

    k5floyd 1/2 ton status

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    whats the diff. (no pun intended) between the two? and what years and models where they used in?
     
  4. sweetk30

    sweetk30 professional hooker Premium Member

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    the eaton is course spline and 12"ring gear. the 14 ff is fine spline and 10.5" ring gear. if you need a locked rear then find a factory locker its a detroit unit. friend has run 1 for the last 20 years with 38 TSLs and to many motors to list . no major problems. he said basicly 2 ratios 4.10 4.56 and half where lockers also. possible other ratios. hard to find parts for the rockwell eaton units tho. so be carfull thay are tuff tho.:cool1:
     
  5. supersize75k5

    supersize75k5 OrganDonorRacing.com

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    72 and down had the eaton, I cant remember when they started apearing though, was a decent run though. Here is az yard are littered with handfuls of beat up 67-72 long bed 2wds


    many to be found, if you have it run it, same/similar set up to 14 bolt. But 14 bolts can be had for cheap too if you wait around 75.00 and up. I like the eaton for the drop our design, I have a 4.10 and 4.56 set up. If I want to swap back to 4.56 it is easy as pie. Get a set of spare spiders if you have concerns though.
     

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