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Old 11-25-2010, 02:43 PM
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Second Trans Cooler if Using Stall Converter?

Should I add a second trans cooler since I am going to run a 2200 rpm stall converter? The car is a street use LeMans, 400 CI, turbo 350 with summit 2802 cam. Now it's using the radiator tank as trans cooler.

Thanks,
BT
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Old 11-25-2010, 02:50 PM
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I always run an extra one, Just extra insurance, I make mine run through the rad cooler then over to the external then back to the trans, Never had any problems with it. Plus Coolers are inexpensive, Even my heavy duty one was only like $70.
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Old 11-25-2010, 03:12 PM
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Yes I would install a second cooler on the return line ( the bottom line). The trans temp should be kept @ 180* or less.
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Old 11-25-2010, 03:12 PM
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You should be fine with one cooler... I never use the rad cooler on any car I build..I run up to 3500 stalls on only a external cooler, I only use external coolers on all the cars I do.. Never had any problems yet with any.... Do what you feel.. But it is not needed... 2200 Is a small stall.. You shouldn't have anything to worry about..
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Old 11-25-2010, 03:25 PM
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That what you call a cooler in the rad is in fact a warmer upper,
gets the trans to operating temperature.Think about it the fluid is running next to hot engine coolant.
180º is a good temp, anything less and contaminants do not evaporate out of the fluid.
I´ve had no problems since I went to an aluminum rad sans trans "cooler",
just run a B/M cooler in front of the rad.
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Old 11-25-2010, 03:41 PM
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Quote:
Originally Posted by malc
That what you call a cooler in the rad is in fact a warmer upper,
gets the trans to operating temperature.Think about it the fluid is running next to hot engine coolant.
180� is a good temp, anything less and contaminants do not evaporate out of the fluid.
I�ve had no problems since I went to an aluminum rad sans trans "cooler",
just run a B/M cooler in front of the rad.
You are half right. It's a warmer upper when it's cold and a cooler offer when it's hot.
When you add a cooler, read and follow the manufacturer's installation instructions as any deviation from the installation inst. will void any warranty on the cooler.
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Old 11-25-2010, 04:57 PM
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No need for a 2nd cooler unless you just have to have the extra security or something. JMO



Cole
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Old 11-25-2010, 06:28 PM
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Since we are on the subject, when i installed my B&M tranny cooler this spring the fella at the tranny shop said that some B&M's and maybe others have an internal bypass of some sort that will divert incoming cold trans fluid. This takes the cooling effect of the cooler fins out of the picture.When the fluid heats up it is sent through the fins again? Can anyone confirm this, or was he/I misinformed? Thanks
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Old 11-25-2010, 07:42 PM
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big stall converters build heat. thats for sure. i would use an extra cooler if it was like a 10" converter, & i like at add a external filter in line as well. if your converter is a 11" or 12", i probably wouldn't worry about it.
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Old 11-26-2010, 01:59 AM
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If it were I, I would get a medium size external cooler and bypass the rad cooler altogether. Why is for the reason if the internal cooler bursts, as has happened to me on 2 occasions, the tranny gets filled with coolant and ruined. After it happened the first time I should have learned my lesson. There is other reasons also but I won`t mention them as I don`t feel like getting in a debate. Just keep this in mind: Heat is the number 1 killer of automatics.
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Old 11-26-2010, 06:10 AM
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You could get by without it, but considering your location (Houston) and its summer weather, an external cooler is always a good idea. It will cost you about $50-$80 for a stacked-plate external cooler, and installation is usually simple with a TH350 in an older vehicle.

If you buy the Long Tru-Cool low pressure drop (LPD) brand coolers, they come with metal mounting brackets (no ties to the radiator) and they are very solid. Most of them also have a thermostatic bypass that lets cool fluid bypass the external cooler until the vehicle is warmed up. Long used to provide the OEM trans coolers for both GM and Ford, and the B&M cooler is a rebadged Long cooler. I got the trans cooler for my truck from a supplier in Dallas.

This is one source that lists several of the coolers you can get http://www.performancetransparts.com...u-coollpd.aspx

Bruce
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Old 11-26-2010, 09:01 AM
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Quote:
Originally Posted by DoubleVision
Why is for the reason if the internal cooler bursts, the tranny gets filled with coolant and ruined.

The main reason I don't care to use the rad cooler also..
I use these on every car I build.. I try to put in the longest I can fit..

And as far as hot days... We see well over 100* days here daily...
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Old 11-26-2010, 10:35 AM
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Quote:
Originally Posted by NEW INTERIORS
The main reason I don't care to use the rad cooler also..
I use these on every car I build.. I try to put in the longest I can fit..

And as far as hot days... We see well over 100* days here daily...
Now thats a decent looking cooler.



Cole
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Old 11-26-2010, 10:37 AM
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Quote:
Originally Posted by DoubleVision
If it were I, I would get a medium size external cooler and bypass the rad cooler altogether. Why is for the reason if the internal cooler bursts, as has happened to me on 2 occasions, the tranny gets filled with coolant and ruined. After it happened the first time I should have learned my lesson. There is other reasons also but I won`t mention them as I don`t feel like getting in a debate. Just keep this in mind: Heat is the number 1 killer of automatics.
Considering the amount of vehicles on the highways today that have the tranny coolers in the radiator, you must be the MOST unfortunate person I know! Personally, I have never seen this happen on any of my car's or trucks I have ever owned which is conservatively about 30 in my 45 yrs of driving.
Dam the bad luck. I feel for you and can understand why your "gun shy"
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Old 11-26-2010, 10:39 AM
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Quote:
Originally Posted by sqzbox
Considering the amount of vehicles on the highways today that have the tranny coolers in the radiator, you must be the MOST unfortunate person I know! Personally, I have never seen this happen on any of my car's or trucks I have ever owned which is conservatively about 30 in my 45 yrs of driving.
Dam the bad luck. I feel for you and can understand why your "gun shy"
Yep i have seen it happen to a few others but like you Sqz it's never happened to me, Knock on wood.



Cole
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