Transmission Cooler

I use a B&M plate type transmission cooler. It's not run through the radiator either. Works great 3K stall converter. 65'
I used to run the biggest cheap cooler I could find on the hemi (race only), never had a hear related problem.
Now run it thru the rad, first then into the cheapest cooler I could find and back to the tranny , no problems at all...505'' 68 barrcuda , 3500 hughs convertor.