All this said and I am no expert. I just want to add something we use to do back in the day when we were runing the old flat head Fords in stock car races was to remove every other vain on the water pumps and this alone made a big difference to control over heating. I have assumed all these years that it just slowed down the flow.Could this just have been a matter of the-revs causing the pump to loose suction ?? .I notice all the new cars/trucks now have a one core radiator and will sit all day in 105 deg. heat with AC on and never over heat...Whats up with all this ???? This cooling stuff is something I would like to understand because I have never been able to wrap my brain around it..!! Jerry
