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396/205 conversion

Discussion in 'The Garage' started by bryanrash, Dec 3, 2005.

  1. bryanrash

    bryanrash Registered Member

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    What all needs to be done to replace the Dana 20 mounted to a 396 with an NP205? Is it just a matter of getting the right adapter or are there significant changes that go along with it?
     
  2. Corey 78K5

    Corey 78K5 1 ton status

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    Never mind the engine. What transmission do You have? with out knowing that the question at hand can not be answered.
     
  3. bryanrash

    bryanrash Registered Member

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    Transmission

    I can't find the numbers on it, but it is a 4 speed manual. I am assuming its a sm465.
     
  4. Jimbo*

    Jimbo* 1/2 ton status

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    One PTO cover, or two? If it's really a Dana 20(21), it should be an sm420. Better off to change over to an sm465; much more common and better parts availability.
    Jimbo
     
  5. bryanrash

    bryanrash Registered Member

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    It is a dana 20, that I am sure of.
     
  6. Blazer1970

    Blazer1970 1/2 ton status

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    No, Dana 20s came married to SM465s in some first gen Blazers. No Dana 20 was ever used with a 420.

    To change to a 205, you need the correct adapter and transfer case. The tranny is the same.
     
  7. Jimbo*

    Jimbo* 1/2 ton status

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    My Mistake, I was thinking of the sm420/rockwell t221. :doah: Now all he needs to find is an np205 with a 10 sline input; pretty easy(i have three or four). Post up a wanted ad.
    Jimbo
     
  8. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    I have a 465/205 combo in the for sale section, search for my name, its been up a while, VERY loose on the price
     

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