[ItBites]

My opinion: 245-250 deg at .050 is at or beyond the limit of what will work well with 9.5 to 9.0:1 CR. I would be happier with the low CR and long duration if it were 114 lobe sep (you'd develop more dynamic cylinder pressure). Further, those flow numbers are way below what I usually see for big HP motors. It looks like those are torque heads with a higher-rpm cam. May work OK, but I'm a little concerned with the longish duration cam, even though it is not super-long.

Just for comparison, my ported FACTORY BBC heads (on my 427BBC) flow ~400Intake/330 Exhaust cfm at .700 lift.
I have ~12.5:1CR and use ~265/270 deg @.050, .675/.685 lift roller