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Moroso 22000
Oil Restrictor Kit (SBC/BBC/.060 orifice diameter); This Oil Restrictor Kit for SBC/BBC engines (.060 orifice diameter) reduces windage & oil flow to upper engine assembly, leaving more oil for rod/main bearing. The Oil delivery holes at the rear cam bearing must be tapped to install.
Moroso 22010
Oil Restrictor Kit (SBC/BBC/.0625 orifice diameter); This Oil Restrictor Kit for SBC/BBC engines (.0625 orifice diameter) screws into lifter galley cleaning plug holes at the back of the block. It reduces windage & oil flow to upper engine assembly, leaving more oil for rod/main bearing.
Moroso 22016
Oil Restrictor Kit (Newer GM Gen V/VI Blocks/.0625 orifice diameter); This Oil Restrictor Kit for newer GM-Style blocks (like Gen V/VI) has a .0625 orifice diameter (oil lifter galley bosses flush with bell housing face). It reduces windage & oil flow to upper engine, leaving more oil for rod/main bearing.
Moroso 22017
Oil Restrictor Kit (Merlin II Blocks/.0625 orifice diameter); This Oil Restrictor Kit for Merlin II Blocks (.0625 orifice diameter) screws into lifter galley cleaning plug holes at the back of the block. It reduces windage & oil flow to upper engine assembly, leaving more oil for rod/main bearing.