"I" took the intake off of my LS-6 to bead blast it. "I" have a mororso lifter valley oil baffle that the previous owner removed. Also he left the intake crossover ports open. The engine had a 1/4" Mr. Gasket heat dissipator between the holley 4150 and the aluminum intake. What exactly does the intake crossover do? Should "I" put the intake back on with the lifter valley tray, block off the crossover ports, and use the heat dissipator under the carb?