Man! I like the way this guy thinks. It takes extremes to have the small things materialize for that measurable difference. As in the ones you can clearly see at the track. On the street, not so much.
I'm from a regional town in Australia.
Out here 318's are a helluva lot easier to get than 360's.
And 340's? Forget about it!
For this reason mostly I've enjoyed playing with 318s, but my experiences are that within a given engine family, the bigger cubic inch engine has the most easily realized power potential.
If you start with fewer cubic inches and wanna be competitive, you should be prepared to compensate with cubic dollars. :lol: