72 fitment aluminum radiator into a 1974?
I've seen that little 2 row champion cool some stock small v8 motors. As you know, there are a multitude of reasons why a car runs hot. Your's may have one of those reasons that pushes that little 2 row champion too far. You could search for the problem or you can get a bigger radiator instead. That radiator you get doesn't have to be a big aluminum radiator. Try the 3 row copper that you had in there originally or you can also choose a bigger aluminum radiator.