10:1 comp in efi 5.0L

[vt_on_20s]

hey guys just wondering the best way to get a 10:1 comp ratio in my efi holden v8. do i just get pistons that are 10:1 or do i have to shave the heads too. if so what are the piston part no's or brands. ps i dont need forged

thanks

 

[vyjess]

u will need flat top pistons, 0 deck and plain the heads abit or run a .027" head gasket that should do it! acl used to do a std bore flat top for them not sure about any1 ealse unless it already has been oversized should be able to get .030" or .040" set.