Any chance that braided line runs to a port on the middle top of the head on the distributor side of the engine?
(a "cob job" way of getting oil to rocker arms).
I know that there is a plug in the head on the right side of short side cover 235s where one can do the coronary oil bypass procedure, but can it also be done on a tall covered 216? Seems like the side cover goes up under the valve cover on the right side, covering the plug (if it has one?).
Carl