Yeah I guess I'll try to get it down some more. I figured that opening the chambers up to get the CR I want would be the last thing that Tom would do before I get it back. 77cc would get it down to 9.08:1 so that sounds good to me.
Yes Tom, it was zero-decked.
69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.