Battling overheating new 360 build

I understand what you're saying, but "dual bypasses" means that I would have to eliminate the heater core from my car in order to take advantage of what you're saying works for you.

As far as the dense cold water, disconnect your hose where it connects to the water pump and tell me water doesn't force itself from the radiator outlet up and out of the hose at that connection. While I'm interested to see the effects of a 6 to 8 vein pump, I will give it a shot after I change radiators. I still feel that finding cold spots on my radiator tells me that I have blockages that need to be remedied regardless.

I was under the impression that a 35 degree drop wasn't enough as I've read it's not uncommon to see twice that on an efficient cooling system. I'll have to check what my truck runs at and compare.