Originally Posted by jmoore
I dont know about your engine, a 228 I think, but the 270 has a small line that enters the head at the front which supplies oil to the rockers. It has small orifice in the fitting on the head. Be sure to check that this is clear for oil flow. It doesn't take much to plug it.

In addition to this, that fitting has a very small hole which limits oil flow. You dont want to use a standard fitting on this because it will literally pump way to much fluid up top and leave her dry below. When I replaced the fittings on mine, I filled the fitting with solder and drilled it out to the appropriate size.

Log onto the oldgmctrucks.com site and do a search. You can come up with the right size there as I cant recall off the top of my head.

My 1953 Chevrolet
1947.1 Gallery
1972 C-10 1/2 Ton & 1972 C-30 1 Ton