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Np203 transfer case help

Discussion in 'The Garage' started by Gmck2500mudder, Jul 21, 2006.

  1. Gmck2500mudder

    Gmck2500mudder Registered Member

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    Hi, I have what i believe to be a 1980 GMC k2500 pickup. I have a sbc 350 and th350 in it. The rear end is a 14 bolt gm and the i think the front is a dayna 44. It does not have manual lockin hubs. I am loooking at converting it to part time 4x4. Does any one know of a kit for this specific truck to do so and which setup of locking hubs i need. All the descriptions say that they are for 1973-1979. I am very frustrated and any help or suggestions would be greatly appreciated. Thanks a lot
     
  2. Desert Rat

    Desert Rat Fetch the comfy chair

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    Are you sure you have an NP203 in your 1980? I would suspect that you have an NP205 with auto hubs. If this is the case, you simply swap out the auto hubs for some manual hubs. Somebody with a later model rig can pipe in on this one.....
     
  3. 78Suburban

    78Suburban 1/2 ton status

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    what is written on your shifter knob?
     
  4. Gmck2500mudder

    Gmck2500mudder Registered Member

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    There is just 4x4 low range, neutral and 4x4 high range
     
  5. DEMON44

    DEMON44 Low-Tech Redneck

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    Its not an '80 if its got a 203. All '80 model year had 205s regardless of engine and transmission combination. And it'll be a 10bolt if its an '80. You likely have a '79 or earlier. the vin # can be decoded to confirm the year.
     
  6. sandawgk5

    sandawgk5 3/4 ton status

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    You got a 205 and auto hubs it sounds like. It is def not a 203.

    Ira
     
  7. DEMON44

    DEMON44 Low-Tech Redneck

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