406sbc motor: Block #3951511
Just bought a 9:1 motor #1511 block, 406, 4-bolt, with 3 freeze plugs. Bought from Richard Willis in Hennepin, OK. Super guy. Question: What head gasket thickness should I use to bump the compression a little? I am not sure what gasket is on motor now. Also, for a street motor, what type should I use: mls, copper, etc? Thanks, Richard!!!