How to Choose a Carburetor based on CFM Requirements

This Video explains how to choose the correct Carburetor for any Engine based on CFM Requirements.
Video contains the Mathematical Formula needed to get the correct Carburetor and it also explains what Volumetric Efficiency means and how that is applied when choosing a Carburetor.

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[Truther]

This dude is great at explaining automotive engine concepts

[BasedBidoof]

Thank you for breaking it down so simple. I've heard a lot of people "over-carb" their engines, and looking at the numbers you presented, it really does seem that way. Time to do a bit of math

[blairberg]

302 perfect was gonna use your maths to find the right carb for my 302

[itrstt]

is there a relation between cfm an the ventury diameter?

[Fox_Mulder]

I need help.
I know stock Chevy 350s are happy with 650 cfm carburetors. That being said I have a 750 Edelbrock 1411 on my non bored over 350 that is far from stock.

It has an Edelbrock dual-plane intake, A lopey 510/520 lift cam (2200-5800 RPM) and aftermarket vortec heads that I have ported and Polished myself.

Whenever I tell people I have a 750 CFM on a 350 they freak out saying my carburetor is too big but to me it doesn't feel like it's too big. When I stomp on the gas it does not bog it just goes, when I read my spark plugs either after daily driving it for a while or driving it hard the spark plugs look clean with light amount of soot around the ring at the end of the threads (in other words they look fine to me) and the vehicle idles fine. If this will tell you anything I have a vacuum reading between 15 and 16 inHg. I have not changed Jets metering rods or Springs.

When I tell people (including shop owners) that the engine runs fine. they say oh well it's still too big you're probably losing to tuneability or losing power at higher rpms.

So what I'm asking is in your opinion is my carburetor too big, if not what defense can I use to make these people stop freaking out and what are the signs that a carburetor is too big?

[prme]

ok, i know how much cfm my engine needs, but how do i calculate how much cfm my carb can provide?