Originally Posted by
83Stang5.0
Porting a head, as long as its done correctly, will always be beneficial, regardless of whether the motor is Forced Induction or Naturally Aspirated.
I'm not huge on B series, but from what I've read, the only differences between the ITR head and GSR, is the ITR has slightly larger combustion chambers(I could be mistaken though).
So either way it will benefit the motor, but look into the actual differences between the 2 heads, and decide whether or not switching them is worth the trouble.
Ive been doing a little research, But i cant really come up with much, I have read dont do it because the air is forced into it, and i heard just what you said. the ITR has a ported head on it and there is not too much difference between the 2. I am trying to squeeze a lil more HP out of what i got now without having to push the turbo any higher. thanks for the info