What size domes would i need to use for the 84mm radier cylinder that i am using on a SJ?
would it be 37cc? i want to use GT100 unleaded gas
the site lists 38cc for 98 octane

would i have to get the domes custom made?
i realize porting, etc.. plays a part too
i used 33cc domes when it was a 701 and that gave me 200 psi

what psi can i run on the 100 octane with a 753cc??