Here's a link that talks about trans fluid temps. http://www.digi-panel.com/trannyoil.htm I have a Champion 3-row Aluminum radiator that really seems to work well. I think the bottom of the radiator won't be very hot when the engine is under light loads. So, maybe under light loads the transmission fluid will be plenty cool with just the radiator cooler and further cooling with an auxiliary air cooler might not be good. Just wondering and looking for opinions.
AS long as the transmission gets to 120F then you are not too cool. If it gets over 170 then you are hurting it. 170F maximum optimal temp for most auto transmissions. 190F cuts the life of your transmission in half 210F cuts the life to 1/4 230F cuts the life to 1/8 and if it runs at that temp for more than a few minutes it will damage the transmission. In 35+ years of working on automatics I have never seen one hurt by running too cool - NEVER. I have seen that most transmissions fail because of heat - some wear out before the heat kills them but most die from overheating too many times. When running a higher stall speed converter than stock you need a lot of cooling and 13000 btu will not be enough. You will need twice that much to keep your transmission below 180F. It is far better to "over-cool" your transmission 100% of the time than it is to overheat it just once.
yea im doin a transcooler too tell ya how it goes here in a week also running elctric fan with belt fan (they both fit!) and aif any room a valance mod to push air into engine bay!
I like to put them into the pan. That gives the best average temp for the ATF. I have seen them put into the cooler lines and the temp is a bit higher on the front line and a bit lower on the return line. The pan gives you a better idea of the "real" temp that your transmission is operating under.
