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Old 10-02-2008, 11:19 AM
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tranny coolers

Anyone know how efficient the round finned alluminum tranny coolers are?I am using one now that is 18" long with fluid going in and out of the same end(dual pass). I'm going to be going to a higher stall converter(3000TO3500) AND WANT TO BE SURE i HAVE ENOUGH COOLING. i DON'T HAVE A COOLER IN THE RADIATOR ,AND DON'T HAVE ROOM for one in front or behind the radiator,so it has to be under the car. The round finned type will fit best,I could even run 2 of them. Whats the thoughts on tranny coolers?Any suggestions?
thanks

What about a deep pan ,does that help much?
what about different tran fluids,any help with heat?
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Old 10-02-2008, 11:29 AM
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Quote:
Originally Posted by yragat
Anyone know how efficient the round finned alluminum tranny coolers are?I am using one now that is 18" long with fluid going in and out of the same end(dual pass). I'm going to be going to a higher stall converter(3000TO3500) AND WANT TO BE SURE i HAVE ENOUGH COOLING. i DON'T HAVE A COOLER IN THE RADIATOR ,AND DON'T HAVE ROOM for one in front or behind the radiator,so it has to be under the car. The round finned type will fit best,I could even run 2 of them. Whats the thoughts on tranny coolers?Any suggestions?
thanks

What about a deep pan ,does that help much?
what about different tran fluids,any help with heat?
Those coolers are the least efficient. I'd use 2. One may be Ok with the deep pan.
A deep cast aluminum pan helps alot.
Fluid type makes little difference.
You should install a Trans temp gauge to be safe.
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Old 10-02-2008, 11:36 AM
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I put an 18" double pass unit on my '32, spaced it away from the chassis about 1" for better air circulation. The car isn't running yet but I based my decision on several guy's that I know who are using them.

Now...these guy's aren't running BIG engines or Big stall conv. so like you said it might be wise to run 2 with the best air circulation you can get and most definately install a trans. temp gauge. I have a PRC alum. radiator and they even recommend and sell them, I asked them about it when I purchased my radiator and they said they hadn't had any problems when used "properly".
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Old 10-02-2008, 11:43 AM
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The one I have now is mounted under the apron between the body and running board,I could put one on the otherside also.there should be a lot of air flow there.Right now I'm running limefire headers straight out with some baffles,so no heat under car,but due to wife's wineing going to put exaust under car with mufflers,so I am very limited to space under the car Its a model T coupe and not much room
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Old 10-02-2008, 12:03 PM
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I started out with an 18" radial-finned aluminum cooler on my T-bucket, mounted similarly to 327NUT's. I'm running a 2800-3000 converter behind a moderately-built 6-71 355 in a 1900-lb. car. I was concerned about fluid temperature after driving for awhile, so I installed a tranny fluid temp gauge. The temp sender is in the high-pressure tap (TH350).

I found in city stop-and-go driving tranny temp was reaching 230-240. TCI (vendor of my converter and tranny) says, "The ideal operating temperature for automatic transmission fluid is between 175 and 225° F." So I changed out my cooler for a Derale tube-and-fin cooler with a 650 cfm fan. I have the fan on a manual switch and turn it on whenever the tranny temp approaches 200. With the fan on the temp never gets over 200, even in a 2-hour long, stop-and-go parade on a 90* day!

FWIW, my opinion is that the radial-finned coolers are probably OK for highway driving, but in city driving you just don't get enough air movement over them to enable them to funciton efficiently.
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Old 10-02-2008, 12:21 PM
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how big is your cooler and where did you mount it? was it very pricey?
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Old 10-02-2008, 12:26 PM
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yragat,

all the info is on their site:

http://www.derale.com/
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Old 10-02-2008, 12:29 PM
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Here is the cooler I have. It is mounted horizontally just behind the tranny cross-member on the passenger side.
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Old 10-02-2008, 01:21 PM
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Anyone using the B&M SuperCooler (fin/ plate design) - opinions?
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Old 10-02-2008, 01:33 PM
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Have´nt you asked this before ?

I got two B/M Super ers, one for the tranny one for the motor oil, vertical in front of the rad.
They work just fine.
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Old 10-02-2008, 03:09 PM
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XNTRCI-T,
how do U like the 2800-3000 converter
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Old 10-02-2008, 03:18 PM
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Another question I have is if U use a deeper pan,does anything else have to be changed,like filter or pickup or dipstick?
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Old 10-02-2008, 04:13 PM
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I don't have a trans temp gauge, so I can't tell you how much better they work, if any, but I'm using a stacked plate style trans cooler for the TH400 in my Chevelle. It seems to do well though, but its mounted in front of my radiator and also going through the radiator before it gets to the stand alone cooler. I don't think you can ever have too much cooling with a trans, so do whatever you can. The deep pan will give you a few more quarts capacity. Most good pans should come with the filter extension, longer bolt(s), and spacer... No dipstick/tube changes are needed.
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Old 10-02-2008, 04:17 PM
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what about the Derale pans with the cooling tubes in them,I don't think they move the filter down probably because the cooling tubes would be in the way. Anyone using one of them?
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Old 10-02-2008, 04:24 PM
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I was also wondering,could a AC condensor be used as a tranny cooler?
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