stock or hv oil pump

I think some guys are over thinking this. An LA small block will take a lot of horsepower with almost zero work. I don’t think you really want to go drilling holes in what is probably the weakest part of the block. Not trying to be a smart *** but hot air doesn’t cool very well.

My understanding is that the holes equalize or balances the pressure produced by the up and down movement of the pistons.
Never tried it just something I heard.