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Author Topic:   Trans cooler
MrXerox
Gearhead

Posts: 322
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 05-22-2001 09:18 PM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
Hey gang, I am ordering a new cooling system for the 71 and had a question about a trans cooler. I plan to go with one of the cheap "NASCAR" series radiators by Griffin but it is not provisioned for use with an auto trans. Alex said in a post awhile back that I could get away with running a big tranny cooler all by itself and the biggest one I can find so far is a B&M 24,000 lbs. GVW 11"x6"x1 1/2. I will be running a C-6 with a 3500 stall and this is primarily a street driven car so I am sure slippage with create plenty of heat. Question is, will this cooler do the job or will the fluid even reach proper operating temperatures?

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jkilroy
Gearhead

Posts: 1703
From: Vicksburg, MS
Registered: Dec 99

posted 05-24-2001 10:19 PM     Click Here to See the Profile for jkilroy   Click Here to Email jkilroy     Edit/Delete Message   Reply w/Quote
I wouldn't be worried about the cooler working too well. The liquid to liquid setup in the radiator is much more efficient than a seperate cooler, probably several times more efficient.

There are several companies that make coolers.

Setrab, a european company that supplies OEM's like Porsche and Mercedes, makes a cooler up to 7 1/2 x 16.

Fluiddyne, who makes a great deal of high dollar NASCAR parts, makes a cooler up to 14 3/4"' x 9 1/4" x 2 1/2, but it sure ain't cheap.

While you are playing around, why not install a temp guage so that you can keep and eye on it.

Jay

------------------
Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"

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MrXerox
Gearhead

Posts: 322
From: Oklahoma City, Oklahoma
Registered: Nov 2000

posted 05-25-2001 10:30 AM     Click Here to See the Profile for MrXerox   Click Here to Email MrXerox     Edit/Delete Message   Reply w/Quote
Well, thats the problem...Since the radiator does not have tranny in/outputs I am worried that the fluid might not reach proper operating temperatures. With the lines in the radiator I would think the fluid would be heated up a bit by heat from the water it is beside thus never getting below a certain temperature.

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kid vishus
Gearhead

Posts: 4357
From: middle of NC
Registered: Oct 2000

posted 05-25-2001 11:53 AM     Click Here to See the Profile for kid vishus   Click Here to Email kid vishus     Edit/Delete Message   Reply w/Quote
I run my street car with just a cooler. I took the lines out of the radiator and have never had a problem. My reasoning was, most trans shops want the trans temperature around 180* tops. If the engine radiator is at 200*, then it is heating the fluid up, and not cooling it off. I would not be worried about it not reaching operating temperature.
I run a big cooler on the street with a small electric fan on it to help cool the fluid off. And remember, I run an 8" convertor on the street that stalls almost 5000 rpm.

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