Another thing to consider is your pulley size on the water pump. 7 inches sounds big for a modern water pump. A large pulley would slow down flow in the engine.
SWEET Sergeant At Arms: Old Dominion Stovebolt Society BUNS?!?!?!Where we're going, we don't need no buns..... 1950 GMC 450 1951 Chevy 1/2-Ton The GreenMachine In the Stovebolt Gallery