Kaase Boss 9 heads

anybody have flow # for the 9 heads ? Charlie called with the # from my A441's from my 712 and boy ,now we know why that motor was a slug!!!
Frank

450cfm @.900 Intake and 300 cfm @ .900 ex makes for a poor head!!! that's almost what my homeported and port plated exhaust Dove-C made!!!
Frank

My Kaase Boss 9's after rubbing where in the 430 cfm range with a 2.300 ss valve.

Frank Merkl wrote:450cfm @.900 Intake and 300 cfm @ .900 ex makes for a poor head!!! that's almost what my homeported and port plated exhaust Dove-C made!!!
Frank

Wow thats it? I thought it would be in the 550 range or more.