OLDSMOBILE 307,330,350,403 SMALL BLOCK AND 400,425,455 OIL GALLEY PLUG WITH 40 THOUSANDTHS OILING HOLE

OLDSMOBILE 307,330,350,403 SMALL BLOCK AND 400,425,455 OIL GALLEY PLUG WITH 40 THOUSANDTHS OILING HOLE . THSI PLUG IS DESIGN TO HELP OIL THE DISTRIBUTOR GEAR . THIS IS ESPECIALLY GOOD FOR ROLLER CAMSHAFTS DUE TO BILLET CORES AND SPECIAL GEARS . THIS IS NOT STOCK . IT IS A MODIFICATION WE DO TO IMPROVE OILING THE GEAR . WE RECOMMEND THIS BE RUN ON ALL BUILDS .