Paul57

What size tranny cooler should I be running on the street with a 3200 stall??
I was looking at 3/4" thick x 7.5" x 12". Is that enough??

01ssreda4

iTrader: (96)

I like the 1 1/2 thick plate coolers. I ran a B+M 70264 for about 1 1/2 years and it performed great.

Paul57

Is there any advantage of the 1 1/2" over the 3/4" or is it more of a "fit" requirement??

01ssreda4

iTrader: (96)

Well its twice as thick so that tells me it can cool better. No reason to go with the slimmer version.

Paul57

Is there any sort of formula or "rule of thumb" to get the right size cooler without going overkill??

01ssreda4

iTrader: (96)

First off, there is no overkill when it comes to keeping transmissions cool IMO. General rule of thumb is "put the biggest damn tranny cooler that you can fit in there." The B+M 70264 is the most popular cooler on this site that I know of. It does work well. I recently switched to B+M 1.5x10.5x11. Its about 1/3 bigger. I like it so far, temps have been completely in check.

FastKat

iTrader: (10)

You want to make sure the trans fluid gets up to and stays around operating temperature... I think that's a minimum of around 180 degrees.

witry

iTrader: (8)

^^^ my tranny never gets past 150* when it gets cold here the temp never gets off from 100* on the gauge and i have the B&M 1.5x11x11(70274 part number)

Twotonefreak

iTrader: (11)

I've been running Derale part number 13104. Runs nice and cold. During the cooler months here in OK while at 30 mph and up, the temp gauge won't go over 120. Will bump against 150 at idle if I've been driving a lot or romping on it.