Specs please

I took 0.100" off the head because I didn't pull the engine. I just sent a head out to be milled and a valve job after I ported it, then swapped on the worked head. If I were to do it a gain I would take more off the block than the head. Dont be afraid to take a little more off. I can still run 87 octane at 9.8:1. If I had a steel shim head gasket(getting hard to find) I would be at almost 10:1 (my goal).