Originally Posted By v cummins
My thought is there is no difference between CNC Ports versus Hand Ports. The bad part about hand porting is duplicating all the other holes. This took me about two weeks--not two days. As Mr. P Body states, having a good master is the key. If you copy a bad port, you wind up with a bad port. By hand porting, once you have a good intake and exhaust port, you have to humanly duplicate it by measuring; which is extremely difficult and very time consuming.





But worth the time. That is why everyone with a grinder can't port heads. Very tedious time consuming work.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time