Charles Servedio just posted a video porting SBM cast iron intake with Thermoquad

Charles Servedio said

Thanks, the part nobody seems to notice is a mildly ported j head goes 270 cfm and 245 through a thermoquad modified intake. The 800 cfm carb knocks it down to 217

Click to expand...

To me the Question what's the hp potential of each reading, I don't think there on par with one another, we generally know what is the hp potential of certain style head with a certain level of build with a given head flow aka A general street strip j headed sbm probable be in the 1.7-2 hp per cfm range(give or take), but what's capability of flow once you introduce intake or intake and carb, I don't think it's the same.

Usually when you usually hear about intakes it seems more about volume, csa, taper, the transition from plenum to port, angle of attack from intake to port etc... More than flow.