I found this interesting what this shop saw on new lifters. His drawing is not very accurate in regard to the lifter being offset from the center of the cam lobe, but it is informative. Another video explained that the lifters are not actually radius but a taper to match the cam lobe grind for full support contact.
www.youtube.com/watch?v=MbRjAMhCEJk

Last edited by Peggy M; 03/30/2023 3:00 PM.
1947 3600 Chevy