Thanks for the info Alberto - I am going through my car from end to end and refurbing/updating as needed and will apply your comments as applicable. I'm going to try for 3.8 - 3.5 camber up front w/o the EBJ, we'll see how that works out.
I also read your write up on engine rebuild, very good write up. Question: It seems you were a few HP over the limit for your class, I assumed you adjusted the timing to get more torque in place of lower HP? The question is do you feel you gave up much HO/TQ by doing it yourself vs. going to an engine builder, or, would it not have mattered due to the HP limit?
Lastly - I met Frank once years ago at Mid Ohio, nice guy but I don't think I want his finger anywhere near my car, who knows where it has been.
(just kidding Frank, you and your brother? treated me very nice).
Regarding the engine, the region's dyno shop 'tunes' the engine to get the target HP and then seals it. He doesn't provide details on what he does but there aren't many options that I'm aware of - add more fuel pressure to richen the air:fuel ratio and decrease HP, run less timing, adjust the air flow meter.
Short answer - doesn't matter due to HP limit. My goal was to run the sealed class in my region so I wasn't really building to hit the SM national worthy HP level. We already knew in advance that the easy formula to hit the HP number on the 1.6 was to run a pro head on a decent bottom end. That's typically enough to hit the ~115ish hp limit of our sealed class.
If I wanted more HP out of that build, I could have gotten a pro head from one of the good SM engine builders instead of just having the machine shop freshen my head. There are plenty of people to race in the sealed class so I haven't felt any regret at being at a HP deficit compared to the non-sealed competitors. My car, and the other sealed cars, are a bit slower than the non-sealed, regional cars. That class is referred to as SMT (they run Toyo RR instead of HoHos). Some of the engines in SMT class have questionable engine legality.
That said, as I got faster, and running with some of the SMT cars, it does start to get annoying to have to work harder to pass the out of class cars with more HP. Then again, I don't get out consistently enough so it basically only matters if I am able to run a full season and get enough seat time for the skills to come back to my old level and then improve to make it further up the field.
Fundamentally, you want to be on par HP level aka parity with the people around you. For the guys running nationals and what not, that's 120+hp pro motors and the corresponding budget. For those of us not at that level...
Part of my reason to rebuild my engine was simply to challenge myself and learn something new. It was fun and my goals were met. I will probably do another one and this time do the oversized pistons and pro head so I can get closer to the pointy end. We'll see how this covid crap and the economy goes in the next year. Right now, I'd just be happy to get to the track, drive, race and bs with my racing buds safely.