MOROSO CHEVY OIL RESTRICTOR KIT - MOR-22010

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 .0625 orifice diameter Screws into existing lifter gallery cleaning plug holes at back of block 2 per package""