Well that’s a **** ton of work required!
NOT gonna ARGUE that one. But my statement stands!YEAH, but that’s the castings you want. Outside of the issues the biggest drawback to the head is the deep spring pockets and the low roof. And the roof cant go up due to those deep spring pockets.
I‘m betting I can do 400 CFM at .900 lift with a head that doesn’t have those deep spring pockets.