Oiling system choices on 408....need opinions!

On the mods... I don't do the 1/2" mods. My engines dont rev where that might be needed, and the stock pump might have an issue with that much more volume in the system. I'm just guessing there but in any event, I dont modify those pasages. Just the main feeds that go to the lifter galley. I think I got my bit from Goodsen years ago. The other big restriction is the intake side of the system. And to help that takes a new pump cover and special pickup. You can use the Moroso pickup too, but again, I typically leave this side alone. By making the main feeds bigger, I'm not really taxing much else in the system. By enlarging the pressure feeds and mains, I'm making it easier to pump out, but not easier to suck in. And the real restriction on small blocks is the sucking in side. If you have straight jouransl and good clearances, the factory system is more than adequate until you get into serious sustained rpms (past 6K) and rough environments (offroad racing, Bonneville, circle track) Aside from non-priority main oiling, its a very good ssytem.