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NP241 - 231 parts interchangeability question?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Creek, Mar 21, 2006.

  1. Creek

    Creek Registered Member

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    I have a NP241 in my Blazer that needs a new chain, bearings and seals. I have a NP231 in my garage that is ready to go but it has a mechanical speedometer drive. Can I swap the tail housing, speedometer gear and vss from the 241 onto the 231?

    David
     
  2. ryan22re

    ryan22re 1/2 ton status

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    i doubt it very seriously.

    maybe just maybe you could swap the gears and chain into the 231, but i dont think it works the other way.
     
  3. afroman006

    afroman006 1/2 ton status

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    How about the range fork and main shaft? Can I put a 231 fork and shaft into a 241?
     
  4. bigred81

    bigred81 1/2 ton status

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    Will not work the 241 and 231 are two different cases with the 231 having the weaker parts. The chain in the 231 is shorter than a 241 chain. If you get some time go to a junk yard and look for an 88-95 241 for the guts to fix yours I had to do this on my 241 in my sub. I found an 1994 year model case that had been split open in an accident but the internals were perfect. If you try it and see what happens. Good luck

    bigred81
     

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