The one thing I didn't see covered was the thermostat.
What kind? What degree rating? If you have a Hi volume WP, you NEED a hi flow thermostat. They open WITH the flow of water, not against like Stant brand does.
When you are pushing that much RPM, you are increasing volume(and in turn increase pressure) tremendously. With that being said, regular T stats will be pushed shut.
Not running a thermostat on the street is a bad idea. The cooling system works on an exchange basis. It needs the thermostat as a "door" to open and close. This allows the coolant in the rad to stay in as long as possible to have as much heat dissipated as possible.
