Are the stock heads for the 94-98 V6 mustang restricted?

Because whenever they ported my heads they said that there was like a wall (or sumthing) that was blocking "sum" air from excaping the heads. And they said i should see a big difference with them ported

Just wanted to add a picture of my stock heads ported

 

Very. That's why everyone switches to 99-04 heads/intake.

 

well they found the wall and they shaved it all down, so now i think my heads will flow much more better than they did b4

 

yes they will, now. you should see a noticable improvement with that wall gone.

 

cool

well time to raise my air/fuel ratio

 

94-98 3.8L heads are single port, while the 99-04 are split port intakes. with a decent polish and porting, you can gain 40 HP. if you plan on going FI, remove the IMRC valves.