I see no need for more oiling on Mopar V8 blocks do to the excessive lifter to bore clearances, unlike Chevy and some Ford casting every Mopar V8 block I've primed with the lifter valley cover or intake manifold off leak oil like there is no tomorrow, a bunch of oil from the sides, tops and bottoms onto the cam lobes and into the lifter valley which drips down onto the cam also
EDM mods to non roller lifters was started originally for BB Chevy motors that starved those camshafts for oil