[olddog]

Bill I likely agree with you on more things than I would disagree.

I take it that your point of view is that if the air fuel ratio is 12.5:1, it makes absolutely no differance how it got there. The fuel system is irrelevant. All that matters is how good an air pump is the engine. Not trying to put words in your mouth, but that is my interpretation of what you said.

If you could conveniently totally seperate AFR and flow, I would absolutely agree. However the fuel delivery can affect the air flow into the pump (engine). Look at a dual plane verses a signle plane intake or what a carb spacer can do to flow. Now is it so hard to fathem that where the fuel is introduced could impact how much air can flow into the engine?

Last I was on Edelbrocks web site they were advertising several of their engines with both carb and EFI, and they claimed the EFI version would make more Hp. Ridiculous I guess.

Edit: I just checked Edelbrocks site and it no longer lists different Hp for carb verses EFI. Don't know what to make of that.

Edit 2: Well it depends on how you get there. If you look at the chevy 555 cid Pat Musi engine 650 hp is the carb version and 675 hp is the EFI version. Same cam and heads. Different induction systems. EFI torque looks to be higher both low and high rpms. Both engines peak 650 lb-ft @4500 rpm.