best tranny cooler

best tranny cooler

Postby keith92ext [OP] » May 18th 2017, 12:58am

just had my 700r4 in my 92 rebuilt..what is a good aftermarket tranny cooler? i know overheating is the killer on these. i do not tow or anything like that but would like another 50k out of her..any pics of installations would be great...thanks keith
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Re: best tranny cooler

Postby AstroWill » May 18th 2017, 1:18am


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Re: best tranny cooler

Postby Coaster » May 18th 2017, 1:26am

i bought "the big one" 9000btu's i think and stacked plate instead of fin/tube. works great $100+

now ask about whether or not to put the radiator cooler before, after or not at all. watch the fun
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Re: best tranny cooler

Postby dramey » May 18th 2017, 6:45am

I just bought a Hayden 699 transmission oil cooler. It has a cold weather bypass built in to the cooler. I bought it at O'Reilys for $50.99 plus $15.00 for shipping. You install it after the radiator transmission cooler. I will be installing it tomorrow.
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Re: best tranny cooler

Postby keith92ext [OP] » May 18th 2017, 12:45pm

great..can you post some pics when done?
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Re: best tranny cooler

Postby AstroWill » May 18th 2017, 3:17pm

They have an application chart here as well http://www.haydenauto.com/upload/Hayden ... oolers.pdf

Here is the Astro/Safari part of it
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Re: best tranny cooler

Postby markmitch » May 18th 2017, 3:41pm

From top transmission specialist you go to the radiator cooler then to the external cooler. That's what I did I rebuilt my transmission then researched online as to the best way to run the lines and why.
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Re: best tranny cooler

Postby 97cargocrawler » May 18th 2017, 5:38pm

I have some comments on this since I just finished installing some coolers on my full sized truck with the 4l80E.

My tranny was consistently getting up to 220*F everyday. Mind you this is a full sized K3500 cab and chassis with no cargo aside from me. I drive fast and hard so that tranny gets HOT.

So, first of all the "cooler" in the radiator is no such thing. It HEATS up the tranny fluid, it doesn't cool ****.

There are two basic types of coolers.

The tube and fin type are usually fairly cheap and light weight and come only with a flared tube for connecting hoses. These types of coolers allow a lot of air to pass through easily. I think these type are ideal for placement in front of the ac condenser and radiator stack purely for that reason, they do not impede airflow.

The stacked plate design are typically very robust and expensive and generally have threaded couplings for attaching hard lines or hose. These are great if you need to have angled fittings, want to change hose size etc. HOWEVER, this design allows very little airflow through the unit! To make things worse the airflow hits the front surface and is then diverted at perhaps a 45* angle and then exits. This is serious trouble for the ac condenser and radiator stacked behind. Not only does the design allow very little air through but it then sends it out at an angle. This is equivalent to setting your condenser and radiator stack at 45* when your driving straight down the road. The airflow is reduced, probably significantly.

My truck has two of these heavy duty stacked plate coolers in front of my condenser and radiator. One is for the oil and one for tranny after passing through the radiator "cooler." They might as well be solid steel, they let almost no air reach the components behind.

In my recent application to get those tranny temps down I used two stacked plate units side by side in series with a fan per unit, bolted behind my cab. I eliminated the radiator "cooler" from the circuit and the stacked plate in front of the radiator. All my tranny cooler circuit lines now head backward behind my cab. The end result is a tranny that runs 50* cooler no matter how stupid I drive. I live in a warm climate so I do not need the radiator to heat up my tranny fluid.

Based on all this experience from the past week I would definitely recommend the tube and fin design over stacked plate in the van. They are cheaper, thinner, lighter and allow more air to reach the components behind it.

Stacked plate is only ideal by itself and because they are super robust they can be installed just about anywhere and not get easily damaged. I cannot think of any location on a stock height van where this style can be mounted by itself and be effective. On a lifted van it could go under the body someplace with a fan.

My van uses tube and fin. As you can see there is a lot of open space for air and the coolers are thin:

Image

Image

My truck uses stacked plate. These things are damn near solid and seriously impede airflow. You can barely even see light through them:

Image

20170508_194710.jpg


But by themselves they work great!

20170513_225030.jpg


20170513_225055.jpg


For the van buy tube and fin.
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Re: best tranny cooler

Postby keith92ext [OP] » May 18th 2017, 7:09pm

nice setup....tube and fin it will be.. its just a regular 5/16 threaded plug to plug where the old stock lines hooked to the radiator right??
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Re: best tranny cooler

Postby Mmusicman » May 18th 2017, 7:33pm

I have the Hayden style cooler in mine.
It is mounted far from the condenser coil... no issues.
(My radiator does not have a trans cooler)

I chose this style for it's performance, strength, and reliability... don't want a rock busting my trans cooler.

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Re: best tranny cooler

Postby five10freak » May 18th 2017, 8:34pm

well i'm glad i read this thread, and thanks 97cargocrawler for the tip. I was about to pull the trigger on the TRU-COOL LPD 4590 but thats a stacked plate design. i will follow your advice and stay with tube and fin like the hayden ultra cool 405 http://a.co/edvlOY3
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Re: best tranny cooler

Postby AstroWill » May 18th 2017, 9:07pm

97cargocrawler wrote:I have some comments on this since I just finished installing some coolers on my full sized truck with the 4l80E.

My tranny was consistently getting up to 220*F everyday. Mind you this is a full sized K3500 cab and chassis with no cargo aside from me. I drive fast and hard so that tranny gets HOT.

So, first of all the "cooler" in the radiator is no such thing. It HEATS up the tranny fluid, it doesn't cool ****.


Damn, if your transmission fluid temps were 220°F and your radiator is heating that, you must have had some seriously high radiator temps.

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Re: best tranny cooler

Postby 97cargocrawler » May 19th 2017, 12:05am

AstroWill wrote:
97cargocrawler wrote:I have some comments on this since I just finished installing some coolers on my full sized truck with the 4l80E.

My tranny was consistently getting up to 220*F everyday. Mind you this is a full sized K3500 cab and chassis with no cargo aside from me. I drive fast and hard so that tranny gets HOT.

So, first of all the "cooler" in the radiator is no such thing. It HEATS up the tranny fluid, it doesn't cool ****.


Damn, if your transmission fluid temps were 220°F and your radiator is heating that, you must have had some seriously high radiator temps.


No even with my radiator hanging in the low 190's I still got the tranny up to 220 and it would stick there. Now they are separate; Mishimoto aluminum radiator stays in the 190's always and now my tranny doesn't get above 170 for more than a few seconds during my most extreme a-hole moments, then quickly cools back down to 140.

I'm doing burnouts from nearly every stop with 35" tires. The novelty of my **** hasn't worn off yet.
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Re: best tranny cooler

Postby AstroWill » May 19th 2017, 12:30am

97cargocrawler wrote:I'm doing burnouts from nearly every stop with 35" tires. The novelty of my **** hasn't worn off yet.

Turbo Diesel for the WIN! :handgestures-thumbupleft:

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Re: best tranny cooler

Postby sixsix » October 16th 2017, 10:15pm

AstroWill wrote:
97cargocrawler wrote:I'm doing burnouts from nearly every stop with 35" tires. The novelty of my **** hasn't worn off yet.

Turbo Diesel for the WIN! :handgestures-thumbupleft:

I know what you guys mean ... my son has a Huge Chevy diesel.
A few years back when he had "His Work - a Special Chip" done on it.

His big fat truck was explicitly "Scary Big n' Fast".
1st time I had seen , and felt , a diesel perform like that.

Nice to see "some sorta' update" since your rebuild, CC.



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Re: best tranny cooler

Postby 97cargocrawler » October 17th 2017, 12:27am

I have since regeared to 5.38 and slapped on 40 inch tires and those tranny coolers are still working like a champ. I'm still fantasizing about this platform underneath my van body but everytime I save up enough money to buy another one some extreme event happens that sucks my bank account dry.
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Re: best tranny cooler

Postby sixsix » October 17th 2017, 1:33pm

:o



Mike - this is one of the "Best Topic Title" winners ... right?
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