In Reply to: Thoughts on Gasoline? posted by Farmer Dan on October 15, 2017 at 10:37:37:
A change in compression will increase hp, ie the sherman head. Then higher octane gas is needed to control pre-ignition and engine knock.
You could add a blower or turbo to increase hp.
You could also polish ports, add more carburation, but higher octane alone will not do much. Un-Like the chicken and the egg, higher compression came first, then higher octane gas...