Depends on who you talk to. Some feel copper cools better, some like aluminum. I am a fan of aluminum, because everything I have read or researched leads me to this choice.

I had a very lengthy discussion with a radiator guy at Turkey Run last year, and he really impressed me with his knowledge. He sells both, and hands down says aluminum outcools copper. I am running one in my Jeep, and we have just purchased one for my '39 (double pass through) and my Son's '29. His is a real work of art, and should cool the 455 well.

With either one, a good shroud and, if using an electric fan, it must be a good quality brand, not one from the local auto parts store.

My '27 has a custom unit from the Brassworks, and I have never been impressed with it. For as thick as it is, and what it cost, I feel it should be more efficient. I plan to put an aluminum in it when I rebuild the car.

Others may have a different slant on it, and that is ok, but this is just my view.


Don