302 cast heads

Again, and I'm not trying to be a smart *** but, "opened up pretty good" just throws a huge unknown into the equation. Some guys can open them up pretty good, and set a national record. And some guys can open them up pretty good and completely ruin them. Even flow numbers don't tell the whole story. I would say post some good pics, and hopefully one of the good cylinder head members will chime in. Just trying to keep your thread moving for you.