I,m better with 60 psi than 40 . I,m going to install the engine this weekend with the hv pump and see where I,m at with it when it gets hot. If the pressure is excessive I,ll change back to the standard pump. I,ll update the post with the results. Something i noticed when priming that i didn't give much thought to at the time was how much oil comes out of that tiny hole in the bottom of the lifter. This is the first time I've used EDM lifters.

The car is a 72 charger , with the hv pump I have to lift up the engine about a half inch to get the pump to clear the k member.