If it's '54 they only made full pressure. From you description you have a full pressure oiler.

The date code on the head looks like 1953 which explains the two nuts holding the rocker cover on. In 54 they went to four screws holding the cover down.

Last edited by JiMerit Boltr#43; 07/02/2015 2:02 AM.
It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed