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Ziegelsteinfaust · 11-16-2021, 06:54 PM

My thought is the city should be around 12+ since my gear ratio provides so little resistance to acceleration. How much in reality I don't know. As I am not able to do A-B testing.

On my fresher LT1 I just picked up that will get a comp 306 cam to help with dynamic compression. Along with a bunch of gasket replacements. I am thinking of trying a 650 vacuum secondary to see if more signal helps out city mpg. Currently I have a 750 vacuum secondary.

Highway any increases would be just margin of error gains. Since part throttle the carb is pretty damn close, and the manifold hopefully won't have to be changed.

11-16-2021, 06:54 PM	#3
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,562	Re: Fuel injection and fuel economy My thought is the city should be around 12+ since my gear ratio provides so little resistance to acceleration. How much in reality I don't know. As I am not able to do A-B testing. On my fresher LT1 I just picked up that will get a comp 306 cam to help with dynamic compression. Along with a bunch of gasket replacements. I am thinking of trying a 650 vacuum secondary to see if more signal helps out city mpg. Currently I have a 750 vacuum secondary. Highway any increases would be just margin of error gains. Since part throttle the carb is pretty damn close, and the manifold hopefully won't have to be changed.