I agree with Slob there.
Anyway, the amount of heat transferred to the water is proportional (more or less) to the amount of power being produced. A powerful engine needs an efficient cooling system.
If the radiator is way back in the car you may have a problem getting the water to flow fast enough to cool the engine. You may be surprised how much friction there is between water and the pipes is flows through.
If the SPEED of the flow is too slow, the water may stay in the block and head long enough to get too hot, and probably boil up.
Consider fitting a remote circulation pump to the setup, so that when the thermostat opens up the cool water from the radiator is flung into the engine instantly thus displacing to too hot water from the head back to the radiator.
It has to happen FAST, or it may boil up before anything happens to stop that.
CharlesY
CharlesY