I watched the episodes. A few notes - that was a bone stock rebuild with a cam and valve springs. They could have used their own "tricks" and had the head milled, used a thinner MLS gasket, done performance work on the head, etc, but they didn't. They did only RWP - they couldn't mate the slant to their dyno. Then they stopped tesing at 6° BTDC when previous tests picked up power each time. I think they could have found another 10-15hp by tuning the carb and running more advance but they didn't seem to bother. It was something different but you can tell that came from the director's office - not the guys. They didn't want to do it.
