Thread: Improve gas mileage on a 427 so ?
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Old 02-23-2020, 05:02 PM
6TNCRZY 6TNCRZY is offline
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Join Date: Sep 2017
Location: Frederick, CO
Cobra Make, Engine: ERA FIA 2158, ERA 427SC 649 sold
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Simplest thing I don't think anybody mentioned. Install a distributor with a vacuum advance if you don't already have one. It makes a lot of difference in cruising mileage, you need more timing when the mixture in leaner and less dense.
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