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Trying to figure out these u-joints and conversions...

Discussion in 'The Garage' started by pvfjr, Jul 30, 2005.

  1. pvfjr

    pvfjr 1/2 ton status

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    So we're trying to put an AMC 20 rear into an 89 S10 blazer. It seems like the Model 20 has 1310's in it, as they're the same as my old 1/2 ton chevy. No problem there. What I can't figure out is what's in the S10's driveshaft. They're quite a bit bigger than the 1310's, and they don't fit the yoke I have laying around that is supposedly 1350. So would they be 1330's or S44? I'm not familiar with those ones, and don't know how to tell. Isn't there some site somewhere that tells you all the trunion and bearing cap measurements to ID them? I can't find anything.
     
  2. masterbeavis

    masterbeavis Registered Member

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  3. kennyw

    kennyw N9PHW Premium Member

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  4. pvfjr

    pvfjr 1/2 ton status

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    Well the waggy rear defintely calls for 1310. I thought the blazer driveline had 1330, but now it looks like it may actually be the Saginaw 3R.

    From what I can tell...
    1310: 3 7/32 width, 1 1/16 cap
    1330: 3 5/8 width, 1 1/16 cap
    3R: 3 5/8 width, 1 1/8 cap
    1350: 3 5/8 width, 1 3/16 cap

    So the 3R is the same width as the 1330 and the 1350, but in between the two in cap sizes. This threw me off a little, cause I wasn't even aware that 3R existed. :crazy: But now the info is here for someone else to find....

    I'll eventually post up the Napa part # and price of the joint if I end up being successful.
     
  5. masterbeavis

    masterbeavis Registered Member

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    Did the dana site help any?
     

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