New Transmission Cooler....

Discussion in 'Towing & Trailer Tech' started by 99'HEARTBEAT, Jul 13, 2011.

  1. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    A few years back I installed, a Mag-Hytec Aluminum Finned Deep Transmission Pan, after noticing that my Transmission Temps were running around....180-190 and sometimes just over 200 Degrees, after installing it, I saw a Drop in my Transmission Temp's to around 180/190 Degrees.....But I still was Not Comfortable having my Transmission running at these number's.......even tho these number's are with-in the Temp's expressed in the Owner's Manual.........As I and Most of you guys Know the Biggest Killer of Auto Transmission's is.....HEAT!!!.

    After doing some research regarding Swapping out my Factory Trans. Cooler with a Larger Aftermarket Transmission Cooler......The Aftermarket Transmission Cooler of choice I was seeing, is the True Cool 40K Transmission Cooler.

    So after ordering not only the 40K Cooler, I ordered a EAD's Transmission Mounting Bracket Kit, which comes with New Upper and Lower Mounting Brackets for the 40k Cooler.....along with all the Mounting Bolts-n-Hardware and 2 Inverted Flair Fittings and the Compression Fitting.


    Below are some pictures of the install of the True Cool 40K Transmission Cooler
    Factory Transmission Cooler

    [​IMG]
    New True Cool 40K Installed With New EAD Upper and Lower Mounting Brackets

    [​IMG]


    Install of the Inverted Flair Fittings to both of the Transmission Hard-lines
    [​IMG]


    Install of the Compression(Brass)Fitting........to be able to Spin the Passenger Side Hard-Line 180 Degrees to Line-Up/Fit onto the Threads of the 40K Cooler
    [​IMG]



    Here are the items that come with the 40K Cooler

    The 2 Inverted Flair Fittings and Compression(Brass)Fitting that were supplied in the EAD Mounting Bracket Kit,

    [​IMG]

    [​IMG]

    Mag-Hytec Transmission Pan
    http://www.mag-hytec.com/transmission.htm


    ........This past Saturday we when Boating and this was the first time Towing my Boat with the New 40K Transmission Cooler.....the Temp's were in the low to mid 90's.......the Transmission Temp's Never went over 150 Degrees!!.......about 30/40 Degrees Cooler than with the Factory Transmission Cooler......I would just say that this is without question the Best Mod I've done to help with Cooling my Transmission Temps.......

    Anyone Towing a Boat or Travel/Car Trailer....this would be a item to keep in mind for a Up-Grade......The Time it took to do the installed.......was a little over Hour......for the most part this was Plug and Play Installed, the only Mod was the cutting of the Passenger-Side Hard-lines for the Compression Fitting.









    Last edited: Jun 9, 2014
    1 person likes this.
  2. dsfloyd

    dsfloyd New Member

    Wow thats quite an improvement over the factory trans cooler:great:
  3. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    Ya David, I was Very Pleased when seeing the Trans. Temp I mentioned, this new cooler is almost....3 Times Larger than the Factory Cooler.....after hearing/reading about other guys who have done this Cooler Swap, I felt it was worth a try.....I'm glad I did this Upgrade!!
    Last edited: Jun 9, 2014
  4. dsfloyd

    dsfloyd New Member

    did you notice any difference with engine temps (going up) due to the larger area covering the radiator? Probably wouldnt due to the fans doing a good job of pulling air through the radiator but thought I'd ask.
  5. 99'HEARTBEAT

    99'HEARTBEAT Moderator


    That was one item that I thought about David, But my Engine Temps were the same as they were before installing this larger Cooler....

    Last edited: Jun 10, 2014
  6. murdog94

    murdog94 New Member

    That looks like stock and works better my fav type of mod.. guess i need to take a look at one for the ram since we all know how much those trannys like heat even though i have the new 5spd auto! thanks for showing how easy is actually is!
  7. adampaul1964

    adampaul1964 New Member

    Nice mod and informative write up Mike, sounds worth doing even though I don't tow much.
  8. ChevyFan

    ChevyFan Administrator Staff Member

    Well, that's very interesting to say the least. It makes sense that a larger trans cooler would do a much more effective job for cooling, I didn't think it would do that much of a difference. 90 degrees is like nice bath water, lol.
  9. Nice write-up Mike!
  10. stephan

    stephan New Member

    Those are good numbers Mike. Your weather is about the same as here during boating season. How much does your boat & trailer weigh?
  11. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    Mike, I couldn't agree with you anymore, on this looking like a Factory/Stock Setup!!....and being easy to install.

    Adam......I've been out doing errands over the last couple of hours...in the city stop-n-go traffic and on the freeway and the Trans Temp was right at 120 degrees, which is about 20-degrees cooler, than before doing the Cooler Swap.

    Ya Steve, I also didn't think it would be this Big of a Change, in the Temp reading's....I've been very Impressed with the Results!!

    Thanks Del....:glasses:
    ---------- Post added at 03:12 PM ---------- Previous post was at 03:04 PM ----------

    Stephan, Up in the Napa Valley, here in Northern/Calif. where we go boating, can and does get Hot.....during the 4th of July the Temp were High 90's...Low 100's.....My Boat...Motor and Trailer Dry Weight is around.....3500/3600lbs.......The True Cooler 40k I bought from,
    Last edited: Jun 10, 2014
  12. stephan

    stephan New Member

    Thanks for the link Mike. If the price of gas ever goes back down & I go back to towing mine I may get one of those coolers. I have 2 of the old style, in series (claimed 24,000 GCVW cooling capacity lol), but on a 95-100 degree day pulling long hills my trans is seeing 190-205 degrees. My boat/trailer is 7500 lbs for a total 12,500 GCVW & the old style coolers just aren't making it.
  13. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    This True Cool is a 40,000 GCVW......When I bought it from Oregon Performance, they were running a special.....of $119.00.....and the EAD Mounting Bracket kit and the fitting's that come with it was around $59.00 plus shipping, right now IMO it has been a Very Good investment.
    Last edited: Jun 10, 2014
  14. stephan

    stephan New Member

    Hey Mike, I went to the ebay link & looked for dimension specs on that one cuz the pic they have of it there only looks like it's half as tall as the one on your truck. Do you remember what the length & width are?
  15. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    Stephan here are the Specs on the Cooler,
    NEW Long Tru-Cool Max transmission cooler P/N LPD4739. This cooler is rated at 40,000 GVW and Measures...8.5"x22.75"x1.25"...This is a stacked plate, low pressure drop unit. This cooler has 3/8" inverted flare fittings and comes with a thermal bypass valve so you can use this cooler in cold weather and the fluid will bypass until the transmission comes up to operating temperatures. This is the ultimate cooler for heavy towing and is a must for heavy duty applications, including racing. Heat is what kills an automatic transmission. If you want to extend the life of your transmission and avoid or prolong a costly rebuild, this is very cheap insurance. All parts and instructions are included to mount and plumb this cooler. This cooler has the bypass valve.
  16. stephan

    stephan New Member

    Thanks Mike. I clicked every link over there & they didn't show anything but the pic. That's a very efficient cooler for the size.
  17. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    Your Welcome Stephan......I'm more than pleased with benefits, that this cooler has given me for the $$$.....and as Murdog mentioned the Factory/Stock look it has after the install.........It Looks Great.....:great:.
    Last edited: Jun 10, 2014
  18. dsfloyd

    dsfloyd New Member

    went home and looked at my cooler and it looks like my 2500 has the same size cooler as your stock one. guess I see a new mod in my future. Just gotta tell the wife first:rofl: (and this will be her response:fighting0072: . Maybe she wont notice
  19. 99'HEARTBEAT

    99'HEARTBEAT Moderator

    I'm not touching this one when Wife's are mentioned......Sorry David your on your own....:neutral:
    Last edited: Jun 10, 2014
  20. dsfloyd

    dsfloyd New Member

    Ha. I like to pick on her a bit (weve been married for 9 years), but I cant complain as I've gotten quite a few upgrades. She usually rolls her eyes then tells me to get it if I want. Then I know if I do I have to make sure to bring flowers, dinner, gifts (im sure you get the idea). Thats why I just put an in dash nav system in her car, that way I can say "but look what I just got for your car". Ahhhh the married life:lol:

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