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  1. #1

    Default 08 4.8 fuel mileage

    what are people getting with the 08 4.8 v8s automatics. i have a crew cab and i get about 18 but what is suprising is my 96 ram 3500 diesel 5spd gets 25+

  2. #2
    Jr. Engineer
    Join Date
    Jan 2009
    Rochester, MN


    Is that calculated by taking your distance traveled between fill-ups divided by the gallons pumped in or is that just off of a display? Displays are never accurate. I can understand a 5 speed diesel getting better mileage than a gas truck but not that high. I have a 99 4.8 auto, just got 16.5 mpg (actually calculated, not from a display) driving 75 mph on a hilly highway.
    99 Silverado Z71 4.8
    2" Suspension lift (Add-a-leafs and leveling keys)
    Long tube headers with 3" offroad Y-Pipe
    Volant Cold Air Intake with Ram Air Intake Tube
    Jet Mass Air Flow Sensor
    Diablosport Predator Tuner

    Previous Truck:
    97 Suburban K1500
    3" Body lift
    2" Suspension Lift (Add-a-leafs and cranked up torsion bars)
    35" Yokohama M/T's
    K&N Intake
    Airraid Throttle Body Spacer
    Hypertech Programmer
    Dual Flowmasters

  3. #3


    i think i get the same last time drove like 130 miles and i use like 1/4 of gas so im getting like 18 to 21 on freeway

  4. #4


    14 city 19 hgwy

    2008 Silverado 1500 Crew cab, Silver birch metallic . 4.8ltr Leer topper

  5. #5


    I used to get 17.6 mpg until I put 20" Denali wheels on. Now I get 15.6!

    ---------- Post added at 06:47 PM ---------- Previous post was at 06:43 PM ----------

    How do you feel about your long headers? How is your low end torque? The instalation? Trying to make up my mind!

  6. #6


    Quote Originally Posted by RedneckTrucker View Post
    96 ram 3500 diesel 5spd gets 25+
    not surprising, my uncle has a 96 ram diesel that got in the low to mid 20s. My truck gets about 14mpg but that is all city driving no highway, rarely get above 45mph.

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

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