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tranny coolin

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by TorkDSR, Dec 16, 2001.

  1. TorkDSR

    TorkDSR 1/2 ton status

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    anybody have an electric fan bolted to the tranny pan?

    i just switched to the turd-o-matic 700, and i wanna keep it really cool... there's a bit o money in th trans with the shorty outy shaft for the 205. and i wanna put an electric fan on the tranny pan, but i like mud.. need opinions

    thanks

    Tork DSR
    "look ma, i can make the dog pee white...."
    aol screen name TorkDSR
    <a target="_blank" href=http://www.torkpig.homestead.com>http://www.torkpig.homestead.com</a>
     
  2. POWERMAD

    POWERMAD 1/2 ton status

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    Ummm putting a fan on the pan is doing nothing.
    get a good sized tranny cooler and mount it in front of the radiator.
    I would recomend this set up on any kind of automatic tranny.


    <font color=green> Too bad ignorance isn't painful </font color=green>
     
  3. 91gmcjimmyCH_IL

    91gmcjimmyCH_IL 1/2 ton status

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    I agree a fan right there wouldn't do much. think about when your driving how much air is getting passed by your tranny body.
     
  4. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Two best mods to ensure your 700r4 leads a long, happy life-

    1. Large stacked-plate design auxilliary tranny cooler. I run a Tru-Cool(made by Long Inc.) 22,000 GVW cooler.

    2. Install an extra capacity B&amp;M tranny pan with the built-in drain plug. This allows you to run more ATF and to drain and replace a chunk of your fluid a couple of times a year between tranny services.

    I honestly don't know if the fan idea would work. The fluid wouldn't get that much extra cooling because the pan material holds too much heat and is constantly kept hot by the warm fluid that is circulating. And the fact that you like mud makes me wonder just how long the fan setup would last.....



    <font color=blue> NEVER FORGET, NEVER FORGIVE, NEVER SURRENDER<font color=blue>
     
  5. shaggyk5

    shaggyk5 1/2 ton status

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    told ya so. Dont buy into everything you see in pictures buddy.

    -matt
    <font color=purple> "Stuff's only good for 2 things, degreasing engines and killing brain cells"</font color=purple>
    <a target="_blank" href=http://www.geocities.com/shaggyk5>www.geocities.com/shaggyk5</a>
     
  6. TorkDSR

    TorkDSR 1/2 ton status

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    i see in pictures? i think i made that up. first learn to maintain your [censored] then we'll talk about upgrading your [censored]...... or are you jealous cause i have room to fit a fan under my truck?

    Tork DSR
    "look ma, i can make the dog pee white...."
    aol screen name TorkDSR
    <a target="_blank" href=http://www.torkpig.homestead.com>http://www.torkpig.homestead.com</a>
     
  7. TorkDSR

    TorkDSR 1/2 ton status

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    im not worried about the cooling when im moving.

    Tork DSR
    "look ma, i can make the dog pee white...."
    aol screen name TorkDSR
    <a target="_blank" href=http://www.torkpig.homestead.com>http://www.torkpig.homestead.com</a>
     
  8. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    The B&amp;M pans are nice, but with the short-shaft (instead of the spacer) equipped 700r4 mated to a an NP205 using the stock 350/205 adaptor you barely have enough room for driveshaft clearance with a stock pan (I had to modify mine and I have a 4" supspension lift). Because my driveshaft is the 3R style (flange instead of yoke), my driveshaft hit my pan under slight compression (without the suspension lift it probably would have hit stock height even with the yoke style front output on the 205), which is why ("probably") the 700/205 was never a factory option. With a deep sump pan you will definitely have to modify (which is not fun). There is even less room to modify as well with the B&amp;M pans as they are made out of nice thick aluminum (for strength), but because of the accumulator and extra pan thickness, you have little room for mods (there is more room towards the "bottom" where the "extra capacity" comes from, but you are still limited near the accumulator. It can be done, it's just a PITA, just a heads up (as I have been there recently). As much as I am not a fan of chrome tranny pans (A. because they are thin B. they tend to rust Quickly C. they hold in heat (to a small extent). I found it easier to modify a cheaper chrome deep sump pan as I was able to have more working room (because of the thinner material) and the extra capacity made up for any heat retension. Truth be told, I will probably modify a deep sump aluminum one, but I wanted to try it on a cheapy before I hacked apart an aluminum one ($$$).

    See my rig at <a target="_blank" href=http://coloradok5.com/gallery/Leadfoot> click here </a>
     
  9. shaggyk5

    shaggyk5 1/2 ton status

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    no, you swore to me up and down that you saw it in a pic of some rock buggy like the sniper or something, you just couldnt remember where.

    And yeah, i am jealous of all that room under your truck, the damn thing has spectacular clearance over your driveway with no trans.

    -matt
    <font color=purple> "Stuff's only good for 2 things, degreasing engines and killing brain cells"</font color=purple>
    <a target="_blank" href=http://www.geocities.com/shaggyk5>www.geocities.com/shaggyk5</a>
     
  10. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    Do the deep pan's drain plug leak? I had a B&amp;M plug in my stock pan on my S-10 Blazer and it would leak fluid onto the driveway.

    Red 1989 GMC Suburban SLE V1500 - TBI 350, 700R4 w/ shift kit, Quad-shock front, 31/10.50/15 Pro Comp MT, 4.10 gears, Duals off cat
     
  11. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    I've noticed that the aftermarket aluminum pans do not tend to leak (again under/over torquing of the bolts/drain plugs can cause leaks), and that most thin chrome pans do leak around the drain plug and don't seal at the housing as good (too flexible). You can get a seal on a thin pan (unless it's already warped), but getting proper sealing and keeping leaks from occuring entails good surface prep, use of high quality gaskets, and proper torquing of the bolts and drain plug. Some say using a "little" teflon tape can help seal a leaky drain plug, but I have not personally used it for that purpose (although it makes sense in theory).

    See my rig at <a target="_blank" href=http://coloradok5.com/gallery/Leadfoot> click here </a>
     
  12. Leadfoot

    Leadfoot 1/2 ton status Premium Member

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    P.S.
    Try to avoid using silicone/RTV on tranny pan gaskets. If even a small amount gets into the tranny it *can* cause blocked passages in the valve body or stuck valves.

    See my rig at <a target="_blank" href=http://coloradok5.com/gallery/Leadfoot> click here </a>
     
  13. Smitty

    Smitty 1/2 ton status

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    You can run into the same thing with the teflon tape.

    Smitty
     
  14. DesertDueler

    DesertDueler 1/2 ton status

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    Thats why you use teflon paste. That stuff works awsome and if it gets in the tranny it wont clog up things since it doesnt harden. We use the paste on all of our nitrous fittings because the tape can get stuck in a solenoid at blow a motor up.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     

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