Quench seems to be the key to this. I plan on 10.8 with a 75-78cc closed chamber with the pistons at 0 deck. I'm stuck with 91 octane though. Cam is gonna be 114 installed at 110.
Using the combination with quench and a late intake valve event, you can run a surprising amount of static compression on pump gas. You see people saying the late intake closing "bleeds off" cylinder pressure, and I use those term as well, but that' really not the case at all. By closing the intake valve later, all you are doing is changing when the cylinder starts the compression stroke, the engine is not bleeding anything off. There's zero waste, as the "bleeding off" statement implies, you are simply changing where in the compression stroke the cylinder begins to compress the mixture.
