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th 350 question

Discussion in 'The Garage' started by mollyman, Mar 2, 2007.

  1. mollyman

    mollyman 1/2 ton status

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    I am just begining my build up of an 81 k10 sub. I lifted the front 3", the rear 4" and will be running 35" tires. My front axle is a 10blt my rear is a 14blt, locked. I've got a 208 with a slip yoke and a th350 trans, behind a 350 eng. that puts out about 335hp. My question is, is my tranny strong enough or should I swap in a th400? I will be abusing this thing off road but no rocks are in its future. I was just wondering because I have heard bad things when comparing a th400 to a th350. Thanks for any input.
     
  2. Cricket

    Cricket 3/4 ton status

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    TH400 is stronger. A TH350 will put up with a reasonable amount of abuse. If you run a transmission cooler with your TH350 and change the fluid/filter on a scheduled basis it will usually last a long time.
     
  3. Beast388

    Beast388 1/2 ton status

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    I have a TH350 behind my 388 stroker making roughly 350hp and 450ft/lbs tq. My Burb weighs in excess of 6000lbs and I am not easy on the skinny pedal. My TH350 has help up fine, but I also have a 2000rpm stall and TCI shift kit.

    As long as it is mechanically sound, it will hold up just fine.:D
     
  4. onetonbb74

    onetonbb74 1/2 ton status

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    in a sub, id run a th400/208 or th400/205 as subs are heavy and wheelbase is long so a th400 would work fine.
     
  5. Cricket

    Cricket 3/4 ton status

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    Kind of like your new bionic leg. :D
     
  6. Beast388

    Beast388 1/2 ton status

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    "We can rebuild him....we have the technology!" :haha: :haha:
     

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