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Transmission cooler

Discussion in 'The Garage' started by 1978Blazerk5, Apr 4, 2007.

?

trans cooler ya or nah

Poll closed Apr 14, 2007.
  1. put the trans cooler in

    38 vote(s)
    97.4%
  2. dont put the trans cooler in

    1 vote(s)
    2.6%
  1. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    hey i have a 78 k5 with a 350 th350 dana 44 4.56 gm12 bolt with 4.56 gears and gov lock on 33's. anyways this is my dd would i benifit at all by putting one in.
     
    Last edited: Apr 4, 2007
  2. dremu

    dremu Officious Thread Derailer Premium Member

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    There is no such thing as too much tranny cooling. Put it in.

    -- A
     
  3. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    thats what i thought just wanted some opions
     
    Last edited: Apr 4, 2007
  4. blazinzuk

    blazinzuk Buzzbox voodoo Premium Member GMOTM Winner

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    what he said
     
  5. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    my friend was telling me by putting in a trans cooler i might lose gas milage is this true
    thanks
    do you have to cut the fitting on the hard line or just put the rubber hose over the fitting
     
    Last edited: Apr 5, 2007
  6. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I would start by installing a tranny temp gauge. If the trans doesn't get too hot then don't worry about a cooler. There is such a thing as too cool. The trans needs to get hot enough to burn off any moisture in the fluid.
    You will not lose gas mileage by installing a cooler. You also don't need to cut any lines, just unhook the proper line and install a hose barb adapter on the line and also one into the radiator then attach the proper hose to each end.
     
  7. Tabb

    Tabb ROLL TIDE! AGAIN! GMOTM Winner

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    If you dont do any heavy towing then I would say you dont really need one.
     
  8. 1978Blazerk5

    1978Blazerk5 1/2 ton status

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    well the thing is that it does have a different pan on it for more cooling, i dont really do any towing so,i have a transmission cooler just sitting in my garage
     
    Last edited: Apr 7, 2007
  9. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    I run a cooler with fan but have an inline t/stat too. Never heard the fan come on but have felt the cooler get hot so the temp has gotten high enough to open the stat.
    Stat will help the oil get up to temp properly.
     
  10. fireplug

    fireplug 1/2 ton status

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    What T stat setup are you using. I'm thinking about installing one when I rebuild my tranny. The weather here hits both extremes, so I think it might be the way to go.
     
  11. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    I used a mocal one supplied by Earls...go figure!!
    I used the same one for my motor oil cooler too. Both work well.
     
  12. ntsqd

    ntsqd 1/2 ton status

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    BAT's Mocal T-stats
    My undestanding is that Mocal is based in the UK.

    My thinking is that if you put the Aux cooler ahead of the radiator cooler then you make sure that the trans warms up and that any extra heat in the trans will be dumped by the aux. cooler. The downside to doing it this way is that you work the fluid pretty hard when the trans is working hard. I see trans fluid as a consumable, can replace it at will. I don't think of auto trans' that way.

    Since the trans draws it's lifeblood lubrication fluid from the pan, that is where you want the temp sender to be. While you're putting a sender boss on the pan, put in a drain too. Since the fluid is easily replaced, you don't care how hot the fluid got momentarily, you care how hot the fluid is going into the trans. Can always replace the fluid if you saw excess temps in the pan. It's quite a bit more expensive if you miss seeing the momentary temp spike from a sender mounted in the cooler line.
     
  13. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    Yeah it was the one on the left I used for both applications.
     

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