John: Glad to get confirmation on Karol moving the heads up. I only know what I have read about Karol, but it is VERY obvious he is head and shoulders(maybe belt buckle), above the average hot rodder. Karol understood valve train dynamics existed and devised a method of evaluating them. Did he copy Smokey Yunick or did Smokey copy him or did he do it all himself? No matter. He got er done. That alone indicates he was way ahead. No telling what other tricks were in there.

I believe he was a tool pusher for his dads oil company. He drove the 56 on the job which entailed lots of miles. My dad was a tool pusher for an oil company during WWII. He wore out a 37 ford on that job, and had to overhaul it. due to wartime shortages he had to remachine non Ford pistons and adopt parts from other applications to get it going again.

I hope John Mummert is doing things like this on his new heads. Since John is no dummy either I suspect he is.