Run an HV oil pump if you think volume is an issue. Most of the aftermarket LA lifters today have an oil hole in them. If the oil is already squirting out the lifter hole with ~75% of the time off the lobe in a solid lifter doing nothing but flooding the lifter valley, why would you not want to divert some of that oil up to the rockers 5 inches higher 25% of the time? Drain back is pretty good from the heads..as you got multiple 2" holes right back to the lifter valley. The lifters, are they called out as a magnum (fulcrum rockers) application? That would dictate oiling pushrods..Dunno, am I visualizing this wrong?
