Thanks Doc -

I thought if I could put together a typical 220 HP 283 I'd be happy for starters. But I think I need 600+ CFM (4 barrel) to do that.

I would think a shorter stroke will increase RPM.
Or a higher cumbustable mixture to get it moving faster?

I can't find a proven specification for the 220HP 283 other than 4 barrel carb in general descriptions.

Then there was a dual-4bbl 275 HP Corvette engine I think.

OK - not ready for that!!!!!

Why a 283? - that's all I have.
I have considered the 327 crank but I don't think the 1965 block will accept it.

Bert