Engine Intake Manifold SpacerEdelbrock part #8727 spacer kit includes a 7 16" thick spacer and two . 045" thick gaskets for a total thickness of 1 2". The kit also has new base to upper fasteners to accommodate the spacer. There are several benefits to the kit. First it raises the upper manifold 1 2" for increase valve cover to upper plenum clearance. This is needed to run a taller cover such as when roller rockers are used. It also provides heat insulation between the lower and