I have about 500 in my Source heads.Id have the same in the Eddys.Mine would have been ok out of the box if I wasnt running such a radical cam and 4 speed.Mine only needed the valse touched up because my machinist is a perfectionist.Id of had that much and more in Eddys because I would have had to had my pistons cut to clear the dome pistons.My shop was impressed with my heads.As he said not a full race head but nice for the price.Rocky