also I’m not too sure if I agree with the other part of your comment. I have a 69 383 hp block that had a lot of miles on it trouble free without requiring special machining or attention to the lifter bores and it didn’t wipe a cam. I installed a summit cam just try one out and three lobes went.
put in a Hughes cam and lifters the next try and it was fine. Why is the Hughes set up okay and not the summit set up? **** cams….