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Re: MPG and Manifold Vacuum
Along with timing, I am wondering what the fueling is like at that RPM and vacuum level, and if you might be able to lean it out a bit. Not sure if this carb has adjustable part throttle you can alter with different springs to give less fuel at your target vacuum level.
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1970 C20 Custom Camper - 350, TH350
1997 GMC Suburban
1994 Acura Integra GSR
1987 Dodge Daytona Shelby Z
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