Adding a transmission cooler

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MrJLR

MrJLR

Built, not bought
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Now that my 727 rebuild is all sorted out, I'm going to install the transmission cooler I bought...

Question :
Should I use it in conjunction with the radiator, or bypass the radiator and run it alone?

Jeff
 
This is what i bought

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Jeff
 
Yup. Run it in line with the cooler in the radiator. At least I always have.
 
The only issue is a built in screen that's clogged or some other restriction in the OEM cooler. In that case flow would be the same in both.
My trans guy always recommends a new cooler to replace the OEM cooler, not in addition to it. That is in the different brand, newer, front wheel drive, whatever. Although I haven't yet, I do believe if I took my 67 904 to him, he would say the same thing.
If you prove you have good flow through the OEM cooler,,, is additional cooler even needed?
 
I ran my 904 behind a 340 for years on a supercooler by itself on the advice of a trans guy. Never had a problem. In Tampa year round
 
What I heard was to pre-cool it then run it through the radiator cooler to stabilize running temperature then back to radiator.
 
pishta said:
What I heard was to pre-cool it then run it through the radiator cooler to stabilize running temperature then back to radiator.
Click to expand...
I have always ran it thru the rad. and then thru the front mounted cooler, it keeps it cooler going back to the trans. The fluid will be rad. temp after warm up, before going in the cooler. I also ran w/ just the cooler on a hemi racecar too.
 
I ran the same B&M on mine as a stand alone as well. Only because the radiator was leaking fluid into the trans-fluid. So I just blocked off both ports on the radiator and all is well.
 
famous bob said:
I never saw this drawing, but I did put mine as far forward as I could get it . ------------------------DAM, I DID SOMETHING RIGHT THE FIRST TIME !
Click to expand...
Proud of ya, Bob! :thumbsup:
in an A that's about the best place to put it, right or wrong.
 
Is this the B&M 70264 supercooler? How did the install go and any pictures?
 
cudajames said:
Is this the B&M 70264 supercooler? How did the install go and any pictures?
Click to expand...
I actually haven't installed it yet...decided to wait and do it with my electric fans in a few months.....
I sure it's going to do the job....nice quality piece. ....

Jeff
 
One thing to mention here. I’ve done extensive research on engine thrust bearing failures. Some things they mention are excessive pressures in the cooling circuit which causes the torque converter pressures to increase above normal range. Every article I’ve read suggests to run an additional trans cooler in parallel with the radiator cooler. And depending on your trans, engine, and application, to either not run an additional cooler at all, or just run the new cooler alone. You can verify the cooling cicuit pressure by using a T fitting at the hot side of the trans. You’d like to see 50-60 psi in drive under load. No greater than 80
 
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