5.3L versus 6.0L gas mileage...

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Thread: 5.3L versus 6.0L gas mileage...

  1. #1
    Walking
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    5.3L versus 6.0L gas mileage...

    First of all, I was really considering purchasing a Tundra until I test drove the Sierra. The interior of the Sierra is by far superior to the Tundra. The Tundra engine seemed to have a little more power due to the 6 speed, but the 5.3 or the 6.0 will serve my needs well...

    Anyway, the GM website shows the same fuel economy for the 5.3L versus the 6.0. I was just wondering what kind of gas mileage you guys are getting on your 5.3s and 6.0s. I am leaning toward the 6.0 with the 3.73 rear end...

    Thanks!!!

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    6.2 Liter LS3 V8 CRBoyd91's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    If you will be frequently pulling anything, get the VortecMax. If not, expect the 5.3 to get somewhere around 15-16 mpg.
    2004 Pontiac Grand Prix GT - 112,000 mi.

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    6.2 Liter LS9 Supercharged V8 VMax2007's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    6.0 with the 3.73's and 20" wheels and Z60 suspension!!!

    I am getting 14.0 all city. No freeway trips yet.

    2007 GMC Sierra SLT CrewCab VortecMax 6.0, 3.73's
    BlackBear Performance Tuned


    2008 Corvette Z51, MN6, NPP w/M2W Remote
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    2011 Honda Accord EX-L V6 (Wife's ride).
    1998 Buick LeSabre (Daughter's ride).

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    Re: 5.3L versus 6.0L gas mileage...

    if it helps, my '05 5.3 ext cab 4wd w/3.42 gears gets 14-15 city, 19-20 highway, a best of 21.7 highway from CT to Indy. -Dan
    1968 Camaro RS/SS 6 speed (aluminum small block 427)
    1969 Camaro RS/SS Project
    2000 Corvette (stick of course)
    2007 Tahoe Z71 for daily driver

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    Re: 5.3L versus 6.0L gas mileage...

    My 2006 Silverado 4x4 crew cab 5.3 gets 14 city, 19 highway.

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    6.2 Liter LS3 V8 CRBoyd91's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    What attracted you to the Tundra if I may ask?
    2004 Pontiac Grand Prix GT - 112,000 mi.

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    4.4 Liter Supercharged Northstar sonjaab's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    My 07 GMT 900 2500 xcab 4x4 6.0 3:73s 13.5 mpg city
    My buds 07 GMT 900 1500 xcab 4x4 5.3 3:73s 17mpg city

    Both bone stock.........Just a few miles on them. No hiway trips yet!
    .......geo

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    Re: 5.3L versus 6.0L gas mileage...

    16mpg city, 21mpg hwy average with a best of 23mpg (10.3L/100km)
    5.3L 4x4 4.10 gears
    2007 Avalanche, Black LTZ 4x4
    2002 Grand Prix Black GTP, Intercooled

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    6.2 Liter LS9 Supercharged V8 VMax2007's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    Quote Originally Posted by tholland
    16mpg city, 21mpg hwy average with a best of 23mpg (10.3L/100km)
    5.3L 4x4 4.10 gears
    Wow, not one one, but TWO black vehicles!! Either you love washing vehicles or are a glutton for punishement. Nicest color on the face of the earth though!!! I commend you for it. Also, nice Av!! Those black LTZ's are sweet looking!! Almost bought one last summer.

    2007 GMC Sierra SLT CrewCab VortecMax 6.0, 3.73's
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    2008 Corvette Z51, MN6, NPP w/M2W Remote
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    2011 Honda Accord EX-L V6 (Wife's ride).
    1998 Buick LeSabre (Daughter's ride).

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    Re: 5.3L versus 6.0L gas mileage...

    Quote Originally Posted by CRBoyd91
    What attracted you to the Tundra if I may ask?
    I was intrigued by their engine and "reliability"... However the 6.0 is more than I'll ever need and the interior in the Tundra is horrible... I'm waiting until the end of summer to see if more incentives come around then I am going to order a GMC 1500, 6.0/3.73...

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    Re: 5.3L versus 6.0L gas mileage...

    Quote Originally Posted by VMax2007
    Wow, not one one, but TWO black vehicles!! Either you love washing vehicles or are a glutton for punishement. Nicest color on the face of the earth though!!! I commend you for it. Also, nice Av!! Those black LTZ's are sweet looking!! Almost bought one last summer.
    Yes, I love washing vehicles... it's my zen activity i guess. My neighbours think I'm nuts. And I am loving the Av so far. I get a lot of compliments... the best one by far was a girl who said it should be called the "PR" edition... PR for panty remover. Sadly, no evidence of that yet.
    2007 Avalanche, Black LTZ 4x4
    2002 Grand Prix Black GTP, Intercooled

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    4.4 Liter Supercharged Northstar sonjaab's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    HOLLAND.............Black is the baddest color on the planet!!!!!!
    My last 5 GM trucks have been black!!!!!!!!!!!!!
    Yes...a PIA to keep nice...but still awesome.

    Mind you my Caddy is red aka Crimson Pearl, my z-28 is red,
    my GTO is Sundance orange and my Triumph is purple !!!!!

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    6.2 Liter LS9 Supercharged V8 VMax2007's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    Quote Originally Posted by tholland
    Yes, I love washing vehicles... it's my zen activity i guess. My neighbours think I'm nuts. And I am loving the Av so far. I get a lot of compliments... the best one by far was a girl who said it should be called the "PR" edition... PR for panty remover. Sadly, no evidence of that yet.
    She suggested it, but didn't follow through??? Did you ask her to?


    2007 GMC Sierra SLT CrewCab VortecMax 6.0, 3.73's
    BlackBear Performance Tuned


    2008 Corvette Z51, MN6, NPP w/M2W Remote
    BlackBear Performance Tuned
    Halltech Killer Bee CAI
    MGW Short-Throw Shifter

    2011 Honda Accord EX-L V6 (Wife's ride).
    1998 Buick LeSabre (Daughter's ride).

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    Re: 5.3L versus 6.0L gas mileage...

    Quote Originally Posted by VMax2007
    She suggested it, but didn't follow through??? Did you ask her to?

    LOL... the age difference alone could've landed me on Jerry Springer. Damned moral hang ups.
    2007 Avalanche, Black LTZ 4x4
    2002 Grand Prix Black GTP, Intercooled

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    6.2 Liter LS9 Supercharged V8 VMax2007's Avatar
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    Re: 5.3L versus 6.0L gas mileage...

    Quote Originally Posted by tholland
    LOL... the age difference alone could've landed me on Jerry Springer. Damned moral hang ups.
    LOL...better Jerry than Bubba (jail).

    2007 GMC Sierra SLT CrewCab VortecMax 6.0, 3.73's
    BlackBear Performance Tuned


    2008 Corvette Z51, MN6, NPP w/M2W Remote
    BlackBear Performance Tuned
    Halltech Killer Bee CAI
    MGW Short-Throw Shifter

    2011 Honda Accord EX-L V6 (Wife's ride).
    1998 Buick LeSabre (Daughter's ride).

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