What sort of gas mileage can I expect?

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Ethan Keuning

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Ethan
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Hey guys, just wondering if anyone knows what sort of gas mileage I can be expecting. Im about to drop in a rebuilt 350 with about 375 hp. It has a 650 cfm holley carb. It is sitting in a lowered 87 R10 running 255 55 16 tires. I am in no way smart with math, so im not sure where to go with this and figuring out gas mileage. Mostly just wondering cause im 16 and this thing has to run on premium according to the people who checked over my engine after i built it. Wanting to know how much of my paycheck ill be using for gas. I can give more info if needed.
 

dvdswan

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Well.... 375HP, 16 yrs old, the need to show off... I predict about 2-3 mpg.

Your MPG will all depend on your ability to control yourself and keep your foot off the pedal. I would image 12-14 for normal driving. Drive like a grandma maybe 16. Hotrod driving about 6-8 mpg.
 

SirRobyn0

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It's going to depend so much on how you drive it. Getting into the secondaries will always eat into your mileage. Your rear axle ratio and if you have overdrive will also play roll. Beyond that it's hard to guess until you start to drive it.
 

Octane

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How many gallons per mile? Lol
 

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