Isn't this all more of an issue of billet vs cast cores?
Roller versus flat tappet has little to do with it. It's more common to run into billet roller cams, but billet FT are also out there.
This is another reason why experts suggest going with a custom cam - get it your way, it's not all just about the lobes, but also core material and final finish and heat-treat. Let the experts guide you based on what you're actually running instead of relying on one-size-fits-all answers and cams.
Where does it say that PN is billet?
The Comp website for that PN doesn't say billet for me, and
photos that are supposedly of that PN don't show a billet part, but a cast core. Is it really a billet core? Seems like it's time to try to sneak a peek at it.
