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Re: carburation system
We need a lot more information than what you provided. What rear end gears, trans, tire size, dual or single plane intake?
The Edelbrock carb "generally" will provide the best in fuel economy versus a Holley carb of the same or similar CFM. That being said, the Holley can usually outperform an Edelbrock, but that performance usually comes in the higher RPM range, and more fuel consumption. A Quadrajet can usually perform equally as well as any carb, but takes an experienced mechanic as they are a bit more complicated.
I won't debate which will run better because I've seen all of them perform flawlessly from people that know how to tune them.
While the carb is the first piece on the engine that receives fuel, the gearing, trans, heads, and camshaft have much more to do with how much of that fuel your engine will consume.
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