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When there was a K

Discussion in 'The Garage' started by 1BEATK5, Aug 21, 2006.

  1. 1BEATK5

    1BEATK5 1/2 ton status Premium Member

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    Does anybody remember what years the hd. K case th350 was made? I broke mine in half by the modulator, and am looking for a replacement and in my neck of the woods it's pretty easy to find a whole parts truck for pretty cheap. I found a k10 with a 350/205 minus motor for $350, but it's 60 miles from me and my d.d. only gets 8mpg. 2800rpm at 60.:doah: thanks in advance.
     
  2. tarussell

    tarussell 1/2 ton status

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    I am not a 100% on this but I belive they started in late 1978 and went through 1981 .
    Tom
     
  3. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    My understanding was that all trucks had a K case as it has the thicker flange where the ally torque converter cover bolts up.
     
  4. roadnotca

    roadnotca 3/4 ton status

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    TH350? Are you talking about the 700R4?
     
  5. theperfectgarage

    theperfectgarage 1/2 ton status

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    That's my understanding also, I'll try and confirm.
     
  6. theperfectgarage

    theperfectgarage 1/2 ton status

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    My info states that the 4x4 th350 was offered on Blazer/Jimmys from 1970 thru 1979. On trucks depending on a number of factors, it was offered 1969 thru 1979.

    Hope that helps.
     
  7. tarussell

    tarussell 1/2 ton status

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    TH350's were offered up to 1981/1982 and there were no "K" cases before 1978 . Most ( if not all ) "K" case TH350's will be of the lock-up converter style that were built in 1981 and later.
    HTH's Tom
     
  8. theperfectgarage

    theperfectgarage 1/2 ton status

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    Tom, are the 4x4 350 trannys not "K" simply because they are 4x4? Is there a "hd" 4x 350 just in the years you mention? I have no info on this.

    Edit: maybe because I was only considering the non- lockup type.
     
  9. tarussell

    tarussell 1/2 ton status

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    I might not have been clear - sorry . I was refering to the "K" case as an "HD" case . Just to clarify - to the best of my knowledge all TH350's built after sometime in 1978 ,that were installed in 4x4's, were "HD" cases.

    Tom
     
  10. theperfectgarage

    theperfectgarage 1/2 ton status

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    Not sure my self, but it makes sense that the General would have beefed them up, I've seen plenty of broken ones.
     
  11. tarussell

    tarussell 1/2 ton status

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    Those strut bars bolted to the dust cover were a great idea ! GM did a fine job on that one .
     

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