I had a guy here in my town port and polish my heads for me (self Racing) and I just got the specs back today.

Anyways I don't know a lot about heads but this guy is suspose to be really awsome. So, let me know what you guys think about it.

Duration: 669-276
Intake: 218
Exhaust: 224
Lift: 495-503
Intake: 530
Exhaust: 540
Lobe Seperation: 112

and my cam

compcam 218-224 at 050

what kind of power Do you think I will have with this setup?
Ohhh it's a 383 stroker LT1.
I got long tube dynatech headers going on also

 

No one is going to be able to tell you much without flow #s. Without seeing them and just know the cam I would say probably somewhere around 340rwhp, but could make a better guess with flow #s.

 

Those specs you posted are cam specs.

Head flow numbers should have different flow values at different lifts for both intake and exhaust.