Is there any water in the oil?
is there any water coming out the exhaust?
have you replaced or tested the radiator cap?
does it pump the overflow full when it overheats? or even before it gets hot?
Since the Op ignored it the first time, i'm quoting it again.
I can't even deal with threads like this, that keep working their way back to the top of the pile, with nothing getting accomplished.
x100 questions from guys trying to help....IGNORED
x100 good suggestions from people trying to assist regardless of lack of info from OP...IGNORED
followed up with a complete disregard for any actual solutions or troubleshooting, and diving into a cam swap, while not even knowing what is causing the overheating issue that the original thread is about.
your cam could have 800 lift, and if it's not beating the valves into the pistons, it has nothing to do with overheating. The only advice you have even acknowledged is some joker at summit (AKA rookie callcenter employee) making some ridiculous statement that you need two 750 carbs worth of air and fuel to cool the motor down??? yeah thats it, about as much as the cam is the culprit. FYI my 408 w/ 620HP has 760/750 lift, and runs at 180 degrees all day long, including down the track.
you're driving us nuts here.