The reason I asked is I recently put a 400/470 in my Dart but I haven't run it in the car yet . It's only been run for the break-in outside of the car. I have a 22" A-body radiator that I recently had re-cored and upgraded to a three core. I was just wondering if the radiator would likely cool the motor sufficiently or not. There will be no racing going on, just local street driving. I also had installed a 180 degree thermostat in the motor.
A 22 inch radiator might work as long as you have a shroud and a big fan. The factory typically used a 26 inch radiator with big block engines.
