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TH350 to a TH400....

Discussion in 'The Garage' started by NITRO, Mar 1, 2003.

  1. NITRO

    NITRO 1/2 ton status

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    i have a 79 K5 that has a 454 goin in next weekend. so im thinkin bout swappin trannies. but i wanna make sure first. the th400 has the 205 adapter and all of that stuff and will bolt up to the np203 if i just re-drill and tap new threads in the x-case right? it is MUDZER's in the for sale section. also, is it the same length? i dont really wanna hafta do new Driveshafts and drill new holes for the x-member. thanx a lot

    NITRO
     
  2. 77fixer

    77fixer 1/2 ton status

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    I won't be the same length. A TH400 is longer than a 350 and the 400/205 adapter is like 4-4.5" long, where the 350/203 adapter is only about an inch thick.

    Brett /forums/images/graemlins/burb.gif /forums/images/graemlins/k5.gif
     
  3. HarryH3

    HarryH3 1 ton status Author

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    The Turbo 400 is longer than the Turbo 350. It also has a 32 spline output shaft, while your Turbo 350 has a 27 spline output shaft. /forums/images/graemlins/frown.gif
     
  4. bad_bo_ti

    bad_bo_ti 1/2 ton status

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    can the output shafts be switched from the 350 to the 400? not trying to hi jack a post just was curious as i am thinking of getting a 400 and if i cant find a 4wd one then i could look for a 2wd one and switch the out put shaft from my 350 to it if it will work.. thanks chris
     
  5. HarryH3

    HarryH3 1 ton status Author

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    I dont' think so. /forums/images/graemlins/frown.gif
     
  6. NITRO

    NITRO 1/2 ton status

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    its aight...u arent hijackin it. it is in the for sale forum and mudzer says it is made to bolt up to a np203 he just doesnt have the right adapter
    /forums/images/graemlins/confused.gif /forums/images/graemlins/confused.gif

    NITRO
     

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