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05 Sierra Crew
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987 Posts
Discussion Starter #1
Hi, Right now I have a Sport Trac with a 6" lift and running 33's. My gas mileage is really horrible like 12mpg. I was wondering in a year or so I want to buy a 00-02 Ext. cab sierra with the 5.3L V8. I was wondering for all you guys running lifts whats your gas mileage like? I want to run probably only a body lift or if anything a minor suspension lift with 33's or 35's on 15x10's. So if you guys can pitch in and tell me what your gas mileage is like that'd be great thanks.
 

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You'll get better than that sport trac, thats for sure. I think a stock 4x4 gets somewhere between 17 and 20, if you lift and don't change your gears you'll get into the 12 avg range, if you regear you'll get some of your mileage back. It also depends alot on how you drive it. Heavy foot = shitty mileage
 

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You gotta run 16" wheels with the new body style trucks. anywayzzz...I get horrible gas milage, 10MPG. I have 10 inches on 35's with the 5.3L
 

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I get 300 miles to a full tank of gass and I usually put 21 gallons from full to light on empty... So im getting around 14 mpg... But I drive around a 100 miles or a little less each day so filling up twice a week at 50 bucks each fill up is not cheap...

Im running 10" and 36's....
 

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05 Sierra Crew
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Discussion Starter #10
All I can say is wow! Hey Kotton I'm running 33's and 4.10's right now in my sport trac and thats giving me 12mpg but you have to take into consideration that they are different trucks. Maybe I should go dropped instead, expecially with the cost of gas nowadays but you just can't be the off-road, go-anywhere look.
 

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Dame whifflebat you sure thats right, I only get 10mpg with 285s and 3.42s
 

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Bigger than you!
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Hell i get 12 mpg in my truck and my truck is heavy as shit,sounds like you

either have a really heavy foot or there is a problem with your truck IMO.
 

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hmm, maybe there is something wrong with it. I have a pretty light foot and i still get shitty mpg.

Anything i should check on?
 

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Proud Chevy Owner
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come to think of it when i had 35's i got around 12mpg and mine is a 2500 crew cab. So yea something must be wrong there.
 

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Ya regearing soon , your absolutely right with the transmission, its a miracle its still running for me. what do you suggest for gears 4.10 , 4.56?
 
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