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Old 08-04-2018, 04:43 PM   #1
cst350
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Trans Cooler for TH400 w/2800 Stall

In the middle of installing a 385 cu in Gen 1 Small Block. I have a TCI TH400 with a new FTI 2800 stall converter ready to go with it. I already installed a deep pan but I also want to run a cooler. A friend gave me a new Derale 21" Frame-rail/Heat-sink type cooler. I like the idea because it won't block as much of the radiator as a plate cooler. I already have a Vintage Air condenser on there.

Question is... Can I get away with putting the cooler under the radiator (behind the Bumper) or should I put it in front of the radiator. I was thinking installing it up and down if I do it in front of radiator.

I never tow anything but I do go from Sacramento to Tahoe/Reno, which is a good 90 minute climb.
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Old 08-04-2018, 07:31 PM   #2
kwmech
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Re: Trans Cooler for TH400 w/2800 Stall

Regardless of towing or not, I would put it where it can get as much air flow as possible. 2800 stall is going to throw some heat
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Old 08-07-2018, 11:49 AM   #3
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Re: Trans Cooler for TH400 w/2800 Stall

By itself, that is not enough cooler for your application. Do you plan to run it in series with your radiator cooler?
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Old 08-07-2018, 11:58 AM   #4
cst350
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Re: Trans Cooler for TH400 w/2800 Stall

After looking into this more I realized the "free" heat sink was not what I need. I gave it back...

I ordered this:

DER-13614
Fluid Cooler, Plate-Fin Type, Aluminum, 10.125 in. x 11.875 in. x 1.25 in.

Does this seem to be enough? I'm swinging in the dark as I have no experience with high stall converters.

Thanks for any advice.
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Old 08-07-2018, 01:29 PM   #5
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Re: Trans Cooler for TH400 w/2800 Stall

This is a good read on the subject. Discusses various types of coolers, the reasons for using them and brings up some good points about flow restrictions within the fittings you choose.

http://garage.grumpysperformance.com...on-cooler.307/

Hth,

-klb
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Old 08-07-2018, 02:00 PM   #6
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Re: Trans Cooler for TH400 w/2800 Stall

Thanks... this is good info. Especially how engine temp is affected as well. The cooler I ordered runs -6 fittings, but then the fittings into the trans are no larger anyway, so I think I am doing the right thing.

Looks like my next purchase is a good trans temp gauge...
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