Drilling oil galleries and oil return holes?

Well whatever sits in those pockets, it is constantly moving. Some comes in and some goes out. Hopefully it moves on down to the back.But no matter where it goes, the crank is probably gonna beat it up as it moves towards the pan. It will maybe fall down into the windage, get beat up for awhile bounce off the windage tray, go around for some more misery, but eventually it will end up in the sump.
To my way of thinking I though it might as well do some good on it's way, so I drilled those little holes in those pockets you're talking about, hoping some of it would get onto the cam-lobes. Well I haven't wiped another cam after doing that............
See, I spend a lot of time at low rpm, and even below low rpm. Sometimes at 500/550 idling/parading around.And I run the hi-volume pump. So, after wiping one cam, I needed to come up with ideas. The holes were one of 'em.
And After I figured out that my little cam pulled hard even way past it's power peak,I run it up there just about all the time. I mean it hits 65mph at 6900, in first-over, so.......GO!
Well they told me SBMs die when you do that all the time. So I researched why that is. It seems,mostly this happens when you suck the pan dry, as in running low on oil. I blew up a couple of 340s doing that. So on my new project, I installed a 7qt pan on it and run 5 or sometimes 6 qts in it. Then I ground drainage channels in a number of places where I saw oil pooling. So now there is always plenty of oil in the pan. It must be working cuz the engine now has over 100,000 miles on it.