Junior Thompson built some of the nastiest best sounding early blown hemi engines. He ran a certain no longer obtainable non- roller timing chain. He even ran these in his funny car engines. He would take one of his timing chains and try to get the links on one side of the chain to touch the links on the the other side with no gears. They would not touch. Now if you're building blown early hemi engines that run better than Junior's did... you're pretty bad ass.