Ok guys, I finally got a good running, non-smoker 350, its a 1993 block with head # 10110810, I looked them up and they are 65cc heads. How big are the valves in these?

Are these heads capable of producing 400hp?

If I did a cam, intake, and 750 carb., what kind of power would I get with the heads, in stock form untouched.

Also, what about modifying the heads?

And where would the compression ratio be around on this engine?

Cheers...................