Thank You,  I cant believe the answer was so obvious

It's an aftermarket external oiling system designed to oil the rocker arms when the engines internal oiling system became clogged with crud and no longer provided oil to the rockers.

Glen Henderson



Freedom is not Free

Letohatchee, AL

can someone help me identify what this is for ?  I have a 272 from a 56 f100. It has a hollow stud coming out of each valve cover  that connects to the rocker shaft . With the valve covers in place , an oil line connects each of the two studs and then connects to a fitting at the oil pressure switch . Is it an overflow ? is it a bypass? im confused !