1.5 or 1.6

I like the 1.6 ratio because it gives back most of the lost motion (lift) lost in the poor valve geometry the small Mopar has. Actually, .427 will yield a true lift @ the valve installed .440. And .454 yields, a true lift of .468 @ the valve. This is for hyd. cam, mechanical will be less than this after lash is introduced. Duration @ .050 will increase only slightly, 1.5 degrees or so. Good luck, Terry.