I think it's interesting that people generally refer to carbs by their fake cfm ratings and disregard the venturi and throttle bore sizes for the most part.
That’s because most people don’t understand this.
They just take what the manufacturer says it is.
Holley say this carb is a 650 because it flows 650, then it’s a 650. The relationship between the sizes is never really understood and nearly never talked about here.
Some members talk about it but have not included any lessons
