alkaline747trio said:Is this 225 with general engine work; RV cam, shaved head, 1.5mm over bore, polish job, blanaced crank? Or is 225 with more than that? I guess then I should shoot for 200 on pump, no racegas avaliable around here, and at $5+ a gallon, to heck with that.
with that - but done right

you'll need to do a bit of head work to get it to flow - and I'd STRONGLY recommend oiling mods if you're going to rev it (and it will rev!).
You'll need 99/100 octane if you want to run a decent compression (say 10/11:1) without detonation. I'm not sure if you can get that much with a 3F head - let us know...
Or convert it to propane.