[red82gt]

I was actually trying to get it to come in at around 10.5:1.
With the flat tops (6.5 cc valve reliefs) and with my milled heads (59cc chambers-measured) It'll work out to 10.33:1 with a standard .0040" thick head gasket. Other than going to a dome piston, there aren't a lot of off the shelf pistons that'll get the compression up without getting over 11:1. I don't have the gear or the skills to mill a domed piston to my desired dome height so that's out. I might zero the deck, that would be in the neighborhood of 10.7:1. That'll be as far as I'd want to go with pump gas and iron heads.