im not kocking champion .. Owner is an outstanding guy .. i run champion heads, but you do know there are better porters n polishers ?
Sure there are better porter and polishers. But Champion has the formula for the TTA heads. They know what works. I am sure they have been burned enough on these heads to get it right. They install bigger valves, hardened seats and use bronze guides...Do other porters include this with their port work? No
You dont have to go crazy porting the heads. Their limit is low low 130mph.