Moroso 22010 Moroso Chevrolet Big Block/Small Block Oil Restrictor Kit w/.0625in Orifice Diameter - 2 Pack

Oil Restrictor Kit. SBC and BBC engines, .0625" orifice dia. Screws into existing lifter galley cleaning plug holes at back of block. 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