[jocko]

are your power brakes working? bad vac gauge? Interesting, and frustrating, dilemma... Interested to see how this works out Dave, hope you figure this out soon - this kinda stuff is maddening! All indications are the motor is running just fine. Fall off above 3500 rpm is a "bit" low for a bbc, but not by much - most of the grunt is in the lower rpm range up to and maybe slightly above that neighborhood. When initially reading I assumed your Winston cup guy stuck a monster cam in it, but clearly he didn't. Are you experiencing the symptoms of low vac? (thus the pb question)