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10-28-2020, 09:13 PM
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#1 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: Mpg
Don't get your hopes up about getting mid 20's in a square body, it probably won't happen. I am getting 17mpg in the city, which is where I do most of my driving, and only slightly better on the highway. My truck is a '71 short bed, 2004 5.3/4l60e with 3:08 gears. I feel like the gear hurts me some in town, but should help on the highway, but on my longest trip I've made in it, 1200 miles of interstate in one day, I only averaged about 19-20, with the cruise set, although I was doing 77ish MPH for a lot of it.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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11-06-2020, 11:14 PM
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#2 |
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Registered User
 Join Date: Dec 2013
Location: Dunwoody,Ga
Posts: 443
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Re: Mpg
My 70C10 with 5.3 and 65e got 21 on a trip recently from Columbia, SC to Atlanta - driving 60ish on back roads. Has 373 and 17" rims.
I kinda figure it would go down driving 80ish on freeway with wind resistance. Probably has same aerodynamics as house going down road. |
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