I have a reprint of California Bill's book from the early 50's on hopping up 6-cylinder Chevys. It's packed in a box somewhere and I'm going on memory. But he said to always use old (used) lifters on new camshafts... Part of the book describes his dyno testing of various carburetor, head, cam and crank combinations in 216 (and 235) Chevys. Anybody else have that book and remember that?