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Swapping transfer cases and gearing

Discussion in 'The Garage' started by Big_Red, Jul 6, 2003.

  1. Big_Red

    Big_Red Registered Member

    Joined:
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    Location:
    california
    I own a 75' chevy 1/2 ton with a 8 inch lift and a 14 bolt rear and dana 44. It also has a 400 horse small block. It has a turbo 350 and a np 203 which is a full time transfer case. I also own a 75' chevy 1/2 ton chassis with a manual tranny and a np 205. I was wondering if i can directly swap the 203 for the 205 with out any changes if so what do i need to change? Or would it be better to buy a kit for the 203 to make it non-full time 4wd?
    Also i have a question about gearing. I have 37" super swamper boggers with 3.73's. My friend said i should run 4.88's. But i do drive a lot of highway miles and i want good gas mileage. What gears should i run?

    Please Help
     
  2. SUBFAN

    SUBFAN 1/2 ton status

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    Location:
    Davenport, Ia
    Do a search for the traansfer case swap, I think there's more to it than just trading, but I'm clueless....

    As for the gears, are you happy with how the truck runs now???? If so leave it alone. If it were my truck, I would want lower gears, prolly about a 4.56....
     
  3. boz42

    boz42 1/2 ton status GMOTM Winner

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    Location:
    Hopewell, Tn 38058
    there is nothing like hearing the words bogger, 8" lift & gas mileage in the same sentance.

    u can not easily swap. adapters are way different & t-350 is 27 spline while the 205 is probably 10. easier to swap whole tranny & t-cases.

    i love gears i would run 5.13's, but then there is that gas mileage thing again.
     

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