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#1
04-22-2005, 09:17 AM
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miles per gallon
i was wondering what everyone gets for gas mileage?? a guy i work with has a 88 1 ton duelly with a 454 and he says he gets 15 miles per gallon!!! now if it were anyone else i would say bull shit! but this guy knows too much for his own good and he never lies... i want to know what every one else gets....please reply
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#2
04-22-2005, 09:28 AM
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Thats some BS! my 90 454ss only gets 9.5 miles per gallon, but i do drive fast everywhere.... My 95 chevy with a 350 got 20 miles per gallon with all the mods i did to it.
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1988 k 1500 rebuilt 350 bored 60 over and low end torque cam 1990 454 SS true dual flowmasters 1995 Chevy cheyenne 2wd 350- 700r4 tranny crane cam Flow-tech afterburner headers true dual flowmasters airraid intake, throttle body spacer hypertech thermomaster
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#3
04-22-2005, 12:08 PM
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Re: miles per gallon
75% city 25% highway on my 97 I get any where from 13.5(cold weather) to 16.5(warm weather). My 1986 4x4 with 3.08 rearend and 305 V8 gets 20 mpg on highway.
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2009 Silverado 1500 2002 Camaro Z28(rebuilder) 2005 Yamaha GP1300R
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#6
04-24-2005, 10:38 AM
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Re: miles per gallon
88 -- 350tbi, 15mpg
96 -- 350 Vortec, 18mpg
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Matthew Brough  1997 Geo Prizm -- 301,000 miles 2000 Honda Accord -- 225,000 miles 2004 GMC Yukon XL -- 223,000 miles 1987 Jeep Comanche -- 116,000 miles 
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#7
04-24-2005, 11:11 AM
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1994 350 TBI w/mods - 16mpg/highway
1992 305 TBI Stock - 18mpg/highway Its hard to get a good number for around town driving... I definitely have a lead foot.
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#8
04-24-2005, 12:20 PM
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My '88 350tbi w/ 3.08 gears gets over 18mpg. And I drive like a madman.
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#9
04-24-2005, 12:39 PM
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Re: miles per gallon
'74 454...3-4 mpg in the city & 5-6 on the highway.
And that's in a 6,900 lb Chevy on 44" TSL's and 1+ ton everything. Last edited by goinbig; 04-24-2005 at 11:02 PM.
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#10
04-24-2005, 10:41 PM
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Re: miles per gallon
'86 350:
12-16mpg highway 10-12 suburbs 6-8mpg downtown
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'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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#11
04-24-2005, 11:54 PM
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so my truck gets 10 miles per gallon in town... i never use the freeway... is this bad??? how can i change this? i got an intake, exhast, hypertech power charger and a spacer
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#12
04-25-2005, 12:05 AM
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Re: miles per gallon
Depends on how fast you're moving and how long you're sitting at a stoplight. With my 350, I get about 10mpg going 45-55 with no stops.
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'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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#14
04-25-2005, 01:07 PM
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Re: miles per gallon
10 in town isn't bad at all really considering my 88 gets about 8 in town.....but i have loud pipes and they REALLY sound good going downtown between the tall buildings!!!
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Matthew Brough 1997 Geo Prizm -- 301,000 miles 2000 Honda Accord -- 225,000 miles 2004 GMC Yukon XL -- 223,000 miles 1987 Jeep Comanche -- 116,000 miles
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#15
04-25-2005, 04:15 PM
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Re: miles per gallon
My 97 350 Vortec get about 14 but i do all around town driving and i have a lead foot
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