[pharmd]

I will have the 800hp Griffin radiator, stock fans, and currently have an Meizere electric water pump. I think most of you guys would agree for HPDE and even Autox the EWP has to go. So if I go back to my stock water pump, will the upgraded radiator be enough to ensure adequate cooling? Is their a nicer pump that I should look into (something cost effective)?

[trackbird]

A belt driven water pump also helps to pressurize the water jacket. That raises the boiling point in the engine block. If there's no thermostat, the radiator becomes the restriction that it pressurizes against. That's one of the advantages to a real water pump. The electric pumps just don't have the power to pressurize the block. If it cools the car, that's all you need. But there's more to it than just flow rate.