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Tranny Temperature Question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Waxer, Sep 26, 2000.

  1. Waxer

    Waxer 1/2 ton status Author

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    Long Beach, CA.
    What temp should a th350 normally run at? Whats the hottest to allow it to get to before worrying? Thanks
     
  2. dumbfounded

    dumbfounded 1/2 ton status

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    I had answered this in a previous post I'll try to find it.


    Love, Peace, and Hair Grease...........
     
  3. dumbfounded

    dumbfounded 1/2 ton status

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    type in "tranny cooler" in the search and I've got a whole list of temps and miles fluid will last. Optimum is around 170-180 then fluid breaks down faster at higher temps. Check it out.


    Love, Peace, and Hair Grease...........
     
  4. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    over 200 is bad. thats when seals start to bake and harden cause poor sealing and loss of pressure that allows the clutches to slip and burns it up. In both your engine and tranny you want to see an ocasional 180 or so for ATF and oil. this will heat it enough that any condinsation that may have formed in the cases will be heated enough to become vapor and leave through the vent or PCV system.

    Diging it in the dirt with my K5's
    Grim-Reaper
    http://grimsk5s.coloradok5.com/
     
  5. Zepplin

    Zepplin 1/2 ton status

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    I have a Th350 and it ran at no more than 190 F all summer long. I live in Michigan but we do hit the 90's for a few weeks in the summer.

    Dazed and Confused in a 74 Blazer

    ZEPPELIN
     
  6. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

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    wow a 74 survied up there? Amazing! my 75 was mostly southern and was swiss cheeze when I got it. Click the link to see. I'm from Troy originaly btw. Still have family in Livonia.

    Diging it in the dirt with my K5's
    Grim-Reaper
    http://grimsk5s.coloradok5.com/
     

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