S/B rocker arm geometry and contact patch

Custom cam grinding came about in the 1980's when guys were sick of running junk.

Welcome to the 1980's.

And it was well before that for the pro racers.
I know, was just referring to this forum. Had lots of time and was wading through the beginnings of a ton of cam posts on this forum and honestly I think I saw the first post from 2009, someone mentioning picking from lobes on a list. And it was someone who built engines. Just an observation of of a regular schlub such as myself who had his eyes opened when I joined this forum in 2016. Catalog shopper until then.:) Oh, and I’m going custom from here on out!