Moroso 22016 Moroso Chevrolet Big Block Gen 5/6 Oil Restrictor Kit w/.0625in Orifice Diameter - 2 Pack

Oil Restrictor Kit. Fits newer GM-Style blocks (including Mark V and Gen VI),.0625" orifice diameter with oil lifter galley bosses flush with bell housing face. Two per pack

• Reduces oil flow to upper engine assembly, leaving more oil available for the rod and main bearings
• Reduces power-robbing windage by reducing the volume of oil passing by the rotating assembly on its return to the pan
• Do not use with hydraulic lifters