Tale of two cars, father-sons. Sons, 528 all aluminum Hemi with big aluminum radiator, runs over 2 hundred or more, all the time, with two fans and custom made shroud. Fathers, 472 Hemi steel block aluminum heads stock radiator no shroud, like it came off the line, runs 160 all day, any temp outside. 63&65 Dodges. I told him to get rid of the rad. and electric pump, won't listen, steady throwing money at it??