Needacobra,
The 428 is a CRAZY motor that Brent Lycans built for himself. It has 2X4's, wild cam, a 7000rpm shift point, solid lifters, and runs great on high test pump gas. I use an electric pusher fan in front of the radiator that I keep on when the days are very hot and humid or I am in traffic. I have never had heating issues with this motor.
Hope this helps....
Steve
Oh, BTW..... I get about 100 miles to the tank, or about 20 minutes on a road course.... ;-)