I'm building my 383 now, & it's 60 over w/flat tops, but they're .105 in the hole. Do you know what your piston deck height was & is now? I'm interested in Edelbrock performer RPM heads.
I am building a new to me 383...the one in my car is 100% stock.
I haven’t measured my piston deck height yet (I bought a motor that was already built, supposedly the block was decked). I sold the iron heads.
