[Ruyguy]

Yea that's the problem with the FCC if you can get the BF more around 35% ( 50% is better ) it will provide better horsepower in the higher RPM band I would go ahead and drill it and try to fill it with JB weld

Does the math seem correct to you?

 

[MrKitty]

Yes those are about the same numbers I get on the fcc