well i do not know what you are asking ?the cam i put down would be a good cam mild street /strip but i do not know you .there are some hard core guys running bigger cams than that and i have put some in but below 3000 rpm s you may not like them big cams on low speed driving . on the heads you tell me how much you what to spend and if you are looking for iron or alum. O ports can do a very good job and a low rpm engine will work better with them. for hi mild to top end the rec ports but port size cc are really what you asking? if you go big ports they will not work good at low rpms