Thread: Improve gas mileage on a 427 so ?
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Old 02-23-2020, 08:05 AM
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FredG FredG is offline
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Join Date: Sep 2018
Location: Howell, NJ
Cobra Make, Engine: Backdraft Car #1209 Roush 427R
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My Roush 427r loves gasoline but it is still much better that my old 427 66 Vette. It has an 870 Holley on it. If I wanted better mileage, I would switch to EFI.

Fred
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