750 Holley or Proform?

too much PSI on an ede carb, IMO. Turn it down to 5, 5.5 at most. Make sure the floats are adjusted properly too.

If you don't know the initial timing, you can't properly tune the engine. Find a timing light and get a tab on it. Even if it only for where TDC is. If it's got any kind of cam in it, my bet it's going to need 14+ initial.