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12V Gas Mileage and RPM at Highway Speed

Old 04-26-2007, 12:19 PM
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17mpg with 75% city driving. I run about 2200 rpms at 75-ish mph and will get around 21-22. I am happy with that. No shell, open bed, truck in sig, stock tires, 3.55 rear. KD
Old 04-26-2007, 01:39 PM
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Originally Posted by RickCJ
Wonder what Clutch is smokin?
heh heh, I wondered that too...gotta mean 17 round town, eh? ;-) My 97 w/4.10 & my 92 w/3.54 both seem to do nearly the same - 16 to 17mpg city(with a/c always on) and right @ 20mpg hwy running 62mph @1650rpm. Towing hwy usually around 15mpg. Never go faster than 62-65mph(ever), but obviously top speed affects hwy mpg much more than load. My .02 cents!! :-)
Old 04-26-2007, 01:59 PM
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I think the smaller pumps affect mpg to, my 160 pump will obviously use alot less fuel than a 215 pump. 27 city i'm still very skeptical of, that just seems alittle steep no matter what pump or mods u have. I dunno, i'm happy with 19mpg with the kind of driving I did last tank, i'll report back after this conservative tank, lol.
Old 04-26-2007, 02:09 PM
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Originally Posted by RickCJ
Wonder what Clutch is smokin?
man it be that good stuff i was just waiting for someone to hate on my milage. i simply replied to the thread just as yall did. I got it!!!! i know what my problem is, im not dumping enough smoke and not cool like everyone else. man, i knew there was something i was missing. i'll be back, im gonna go out and move everything full forward plate, afc housing, star wheel, aneroid screw, change the front plug, heck i might just gut the afc altogether, then yall can answer my new thread: Help, my mileage is horrible.
but then ill be cool
sorry proudpapa97, i thought you wanted an honest answer i'll be back with lower mileage numbers in a minute
Old 04-26-2007, 02:13 PM
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Originally Posted by clutch1
with truck in sig.
27mpg in town no matter how i drive
20-22mpg hwy rpm's at 2200 going 64mph
pulling a full load 15-18mpg keeping rpms up
I'm calling BS getting 27 in town, but less on the highway....doesn't add up at all
Old 04-26-2007, 02:20 PM
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relax guys i think it was a typo...he meant 17 city...errr....i hope
Old 04-26-2007, 02:21 PM
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have u checked ur speed with a gps? I just don't know if a 215 pump can do 27mpg stock or modded. My 160 pump stock got 21 best cruising 55, i'm just thinking ur turning more miles than ur actually going.
Old 04-26-2007, 02:25 PM
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Originally Posted by mr T
relax guys i think it was a typo...he meant 17 city...errr....i hope
uh, have you seen my sig. its twenty seven, 27mpg, ill fix my sig. just for yall
Old 04-26-2007, 02:26 PM
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Originally Posted by 03qclb5spd
I'm calling BS getting 27 in town, but less on the highway....doesn't add up at all
who is this BS, whats his number? this is fun
Old 04-26-2007, 03:04 PM
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I'm calling bs on an averate 27 town no matter how you drive. 27 max, I believe. Heck i've hit over 24 in mine. But as for an average, especially in town I don't think you coud fool anyone into believing that.
Old 04-26-2007, 03:11 PM
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I get 22 MPG on a regular basis with a auto and a very light foot I have tracked every single mile for the last two years and last 40K miles.
Old 04-26-2007, 03:13 PM
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Originally Posted by 03qclb5spd
I'm calling bs on an averate 27 town no matter how you drive. 27 max, I believe. Heck i've hit over 24 in mine. But as for an average, especially in town I don't think you coud fool anyone into believing that.
on an averate? probably counldnt fool anyone, but i could show them
Old 04-26-2007, 03:17 PM
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My mileage since I got the truck 11/2 yrs ago-14 to 16 city, 18 to 21 hgwy, 12.5 to 13.5 towing 4000# travel trailer.Above 2000rpm's my mileage really drops.At 65mph, truck is at 1950rpm with auto, 4.10 gears and 265 tires.At your speed and rpm's, I'd say you have 3.54 gears.
Old 04-26-2007, 04:25 PM
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With my '95 single cab, stock with NV4500 and 3.54's, I consistently get 21 mpg. My fuel guage is out, so I reset my odometer every tank. I've gotten over 700 miles to a tank ( I don't like to push it that far, I prefer to fill up about 650) with no problems. I don't remember the rpm's (maybe 1800@70mph?), but my driving is probably split 50/50 city/hwy. I've always had that kind of mileage since I bought it new in '95. Haven't pulled in a long time, so I don't have any figures being loaded. Sure beats the mpg of my wife's Avalanche...
Old 04-26-2007, 04:45 PM
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Originally Posted by leprechaun
My mileage since I got the truck 11/2 yrs ago-14 to 16 city, 18 to 21 hgwy, 12.5 to 13.5 towing 4000# travel trailer.Above 2000rpm's my mileage really drops.At 65mph, truck is at 1950rpm with auto, 4.10 gears and 265 tires.At your speed and rpm's, I'd say you have 3.54 gears.
Tru-er woid's was never spoken!! If 'tru-er' really is a word...Shelley, your numbers/ratios mirror my mileages Ed Zachary!!

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