Doesn't matter what engine:....: I ran a Crower solid flat flat tappet,with the "hardened lobes, against basic stock solid lifters... the spring pressures were 130 ,on the seat...340 on the nose... Was using ,the old school Kendall zinc green oil.was never informed 9f ConocoPhillips,buying them out... It died ,cam is fine,lifters damn dead.... I like the older cam profiles ,if you know how to manage it... This is a combination of real history posted by you,and theory by you... I actually like slower camshaft profiles, at the moment. Share your concepts, comments,and negatively ....