Roger-friend of mine with a 355 and a very early Edelbrock EFI soft peddling threw the mountains in Calli towing his sand rail and trailer in a Astro gets 22 mpg.No B.S.

I think,no I know for me,it is tons harder to keep that hot rodder in me in check using that knowledge combined with intended use and build a engine for that.Sure anyone knows a BBC puts out more.Would I ever use that much more??.Nope don't think so.Coming from a 4.3 to the 383 will put tears of joy on this old hot rodders face and a seriously doubt it will let me down for what I want it to do.

My point here is if a O/P comes on the forum and says he wants help with a SBC,we should help him with that because he make the decision he wants a SBC.Really not tell him to throw out what he has and start over so he leaves not getting the answer he wanted.I am just saying..........