OIL RESTRICTORS CHEV/DART SHP BLOCKS

Allstar's Oil Restrictors for use in Dart SB Chevy SHP blocks are specifically designed for the priority main oil system to reduce the amount of oil flow to the top of the engine, reducing the risk of evacuating the oil pan in continuous high rpm engines. Kit includes two restrictors, an extra o-ring and detailed installation instructions. Restrictors have a .090 inch I.D. hole. Insert restrictors in the front of the block the long one at 11 oclock and the short one at 1 oclock looking at the front of the engine (the main oil gallery is a 2 oclock).