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Old 09-29-2014, 09:48 AM   #3
68post
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Join Date: Jan 2014
Location: Indpls. , IN
Posts: 795
Re: Is 12 mpg attainable

I was at 12 mpg on the highway with a warmed-up 350 (headers, cam, AL intake, Qjet) in a K30 with 4.56 gears/305 tires and SM465, and that was with a good load too. You should have no problem.

As part of your tune-up set the carb's idle mixture screws with a vacuum gauge @ the highest attainable reading.
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