I also have installed a Aluminum Radiator on my 62 Pickup it has a 355 .cu in.Chevy 350 30 overbore. 300-325HP. with all the goodies. I have installed a Spal electric fan behind it running a Aluminum water pump. The Radiator has a set of two i" tubes running down through it with a 180 theromstat. You can also get a driect flow setup which runs through the complete radaitor in a up & down fashion or side to side fashion for more true cooling. This meaning that all the tubes are hooked together. The company said that it will stay cool in stop and go traffic. I have kept my old radiator 4 core just in case but do not think will need to go back to it. I also have a seperate cooler for my automatic trans. which has a close mount near trans. with short hoses to keep it even cooler going back in to the transmission. One thing to remember when buying a radaitor for your truck they make several types of tanks the stamped type and the welded type. The welded type can really be polished out to look really nice with very little elbow grease and the stamped type can be a little more work as the forming dies will leave marks on the tank making it harder to polish if that is what you want. I just got the formed type as it will be a daily driver. I do not think you will have any problems with cooling. My 2 cents.
62Blue
Don

Last edited by Don G.; 12/08/2008 9:17 PM.
62Blue
62Chevy in progress
You've never been lost until you've been lost at Mach3" Paul F Crichmore (Test Pilot)