on 93 octane??? Thats all I run in the car now and it doesnt have half the mods I want to do to this engine. anything passed 12 concerns me. You'd think I'd have the best/freshest gas out here because of the refinery in NJ but that doesnt seem to make much of a difference.
My current 455 in my bird is 9.4:1 compression and runs on 91 octane all day long. I'm using #16 D ports with a piston that has a 22cc dish. The heads came out to 78cc not the 72 cc that is printed everywhere.
Next engine will be aimed to be more of an all out engine and will have as much compression as possible. Race gas is readily available here.
