Quote: I am a little surprised as your stated compression ratio of 15.3 on that displacement is not common because it generally takes a fair amount of determination and effort to make it happen.
that's one of the things i was thinking. i didn't try to crunch any numbers but that would take a very small chamber volume and/or dome piston which i avoid if at all possible.
as mentioned heads like those don't usually shine until they're ported but they should still put the 906 to shame
