Will these pushrods work?
Three places you need oil. Pushrod tip, rocker fulcrum and valve tip. With pushrod only oiling, the oil goes through the pushrod and exits through a hole in the rocker cup. Collects in the rocker body and lubes the fulcrum. Also gets thrown towards the valve spring area by rocker action. With shaft oiling a stock rocker it’s the same but you get occasional splash oil to the pushrod tip. Not the greatest plan. Picture pushrod through the rocker cup.