I recently added a new B&M cooler for my transmission. I mounted it in front of the radiator for good airflow, but it has created a problem: The cooler pulls so much heat from the tranny fluid, it reduces the surface of the radiator that is exposed to cool air, and causes the truck to run hotter than it ever did before (especially on hills) when towing. I have not yet put the Robertshaw 180^ t-stat, but I don't think it's going to help much with the problem. It might mask it, but I really need to reloacte the cooler to prevent it from heating the radiator in the summer. I was thinking of moving it to the drivers side of the core support and punching out the driver's side knockout for airflow, but that will limit it's airflow. The old body style trucks really can't afford to lose any fresh air radiator surface. Where do you all have your external coolers mounted in the early trucks?
Thanks!