4 inch stroker cam size question

Depending on how much valve relief you have (I used 8cc), a zero deck 408 with Edelbrock RPMs are actually going to be over 11:1, assuming an .039"x4.1" head gasket, and 65cc combustion chambers (as advertised). With the above numbers, you'd need about an ~.060"x4.1" gasket to drop down to ~10.5:1 range...pretty good bit of squeeze there...

Please correct my numbers if they're off based on your build.