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Old 12-01-2010, 08:33 AM
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383 build for e-85 fuel?

Just wondering what everyone thinks about building a 383 street motor to run e-85 fuel? What's heads, target compression, carb etc. Working on building a 383 to run 87-89 octane but just wondering if there would be any benefits from building for "flex fuel".

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Old 12-12-2010, 01:59 PM
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If you build it for e85 it will run on e85 only because to take advantage of the higher octane fuel you will need to run higher compression and more timing. if it is readily available in your area i'd run it since its cheaper and you can make alot more power than 87/89 octane. i'm not sure what parts to use but i'm sure someone else here knows
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Old 12-12-2010, 02:53 PM
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You would need to use an alcohol carb, and steel fuel lines. Alcohol or E-85 will deteriorate rubber lines in short order. More compression and less timing would also be in order. I believe E-85 is between 104 and 110 octane depending on how long it is in the tank. The only problem Ive experienced is the fuel degrades fairly fast. It absorbs moisture out of the air (just like break fluid) so treating the fuel should be consitered manditory.
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