Hi all, this is my first post so I'll try and get on subject. Finally flowed a Busa head on my bench and couldn't believe it 133cfm@ .350" int. and 76cfm@ .350" 63% ratio int. to ex. With a little polishing ( removing casting marks) etc. flow up 8cfm. with a .380" cam on intake and 6cfm with a .350" cam on exhaust. Keeps flowing more at higher lift but int. to ex. % not what I expected. Looks like a larger exhaust valve would help as I've been used to getting ratio to around 80%. Has any one here had any head work done and are willing to share specs.