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Thread: 6.0 gas mileage

  1. #1

    6.0 gas mileage

    Wondering what most of you get with the 6 liter. Specifically those of you that are tuned. From what I have found stock looks like 12-15. Tuned guys? (if you have other mods please list) Nelson? Thanks!

  2. #2
    Join Date
    Oct 2008
    Location
    Scott, Arkansas
    Posts
    424
    Before I put the stall in my SSS I was getting 14.9 mpg. With the stall I'm now at 13.7. That's an AWD with 4.10 gears though. A 2wd with 3.73 should be better than that.
    2005 Silverado SS AWD
    AEM CAI, ARH LTs, HD-2 shift kit with vette servo, Circle D 278mm 3200 stall Madtunesracing.com street tune (MTR now has a Dynojet 248 chassis dyno)

    13.82 @ 94.92 w/1.83 60'

  3. #3
    Quote Originally Posted by ss454327 View Post
    Before I put the stall in my SSS I was getting 14.9 mpg. With the stall I'm now at 13.7. That's an AWD with 4.10 gears though. A 2wd with 3.73 should be better than that.
    Thanks man, I should clarify that I am looking more for the 2500's with an 80e and 4.10's. Anyone out there tuned?

  4. #4
    Join Date
    Jul 2005
    Location
    Azle , Texas
    Posts
    702
    I have a 1500 HD , 6.0L (Comp Cam , longtubes , and CAI) and 3.73 , get 14.7 to 17.5 , but have Lean Cruise through a .cax in EFILIve so kind of cheating .
    Seems the 6.0L will achieve only so good of mileage .
    Now what is a tune again?

    Comp Cam 54-412-11 , Int:265, 212, .522 , Exh: 271, 218, .529 , LSA 114 , Longtube , CAI (Vararam) , TransGo HD2 shift kit , tuned by me with EFILive

  5. #5
    I get 11.5 around town, but im on 373 and 35's. I cant wait to see what my milage is after my gear swap. Oh i also have a cam tune LT's and full exhaust.

  6. #6
    Join Date
    May 2009
    Location
    kennesaw GA
    Posts
    49
    I only have a CAI with a stock tune/gears and get 11.5 to maybe 17 hwy

    AFE CAI, descreened MAF, Pioneer AVIC-D3 7" in dash touchscreen head unit

  7. #7
    Join Date
    Feb 2009
    Location
    Houston
    Posts
    561
    I get 12 around town.16 highway. AWD.4:10s

  8. #8
    Join Date
    Jun 2004
    Location
    george west texas
    Posts
    3,694
    Quote Originally Posted by Smoker_98 View Post
    Wondering what most of you get with the 6 liter. Specifically those of you that are tuned. From what I have found stock looks like 12-15. Tuned guys? (if you have other mods please list) Nelson? Thanks!
    around 600hp...3.42 gears..turbo...32" tall tires = 18.7 hiway and 12 whipping ass on the street...
    '13 silverado LT...stock

    '11 lt 4x4 z71..tvs1900

    '01 gmc twins 6.0 jakes 400 ladder bars w/ coilovers tuned by nelson performance

  9. #9
    Join Date
    Jan 2010
    Location
    Newton, MA
    Posts
    28
    12-13 city 16-17 hwy k&n intake, flowmaster exh. hypertech max energy programmer. I have 3.73's in the rear
    '04 CC 2500 6.0 4L80E, K&N CAI, Magnaflow dual exhaust exit b4 rear wheel, 93 black bear tune

  10. #10
    Quote Originally Posted by bud8fan View Post
    around 600hp...3.42 gears..turbo...32" tall tires = 18.7 hiway and 12 whipping ass on the street...
    Thats awesome!

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