hi

just did a 383 iron heads 9.8-1 with a way smaller cam to run o pump gas .

yes if you truly have 11-1 this must be checked and verified !

with the 509 cam there is a lot of duration to bleed off compression soooo ,

i believe you can run that set up with the correct dist curve and carb afr .


nay sayers jump on this one , but i would run it !