So the cooler Madman sent me is about the size of a business card and it just isn't keeping the tranny temps in an acceptable range. One pass at the drag strip and temps are up to 250 and sometimes higher. There has to be a bigger and better cooler available. The one Madman sent me is about 12" x 5" and about 1-1/2" thick. I have no idea on what the rating is.

Who makes the biggest tranny cooler?

 

Earl makes all kinds of sizes. Go to summit and you can see all available there.

I'm a bit surprised that madman cooler didn't keep it cool though, it's actually bigger than the famous B&M cooler everyone seems to use.

I'm using an Earls cooler 13x7x2, hope it's big eneough as I haven't ran the car yet. Are you using a trans-brake?