Hello

As I understand in 69 and 70, 351W engine had heads with beast flow, but could anyone realy tell me how much potencial this heads realy has. With some porting, maybe larger valves, where is the HP limit for this heads.
I would like to stroke this engine, put new cam, intake, carb, but I would like to keep the heads if possible, with some work on it off course.

Thank you for you answer

Filko
Slovenia-Europe