Wait what? How can cam have roller lobe and a flat tappet lobe on the same cam? What than keeps the single roller lifter from spinning? I know they have single, dual (or split if you prefer) and quad duration cams; however, I've never heard or seen a two different style lobes (roller and flat tappet) on the same cam. That said, why would someone want that other than to prove it can be done? I'm a massive fan of roller cams, they bring you into the power curve sooner and keep you there longer vs a flat tappet cam.
