Thread: 2008 F350 Super Duty 6.4L Powerstroke

  1. #1
    Join Date
    May 2015
    Location
    Albuquerque, NM
    Posts
    107

    Default 2008 F350 Super Duty 6.4L Powerstroke

    I have debated dedicating a thread to my truck and experiences and decided that there are enough people with similar trucks that may find some parts or experiences that I have had useful.

    As the thread title states my truck is a 2008 F350 Super Duty diesel crew cab with a 6.75 foot bed. A lot of people on this forum in particular associate the 6.4L with issues for some reason. The 6.4L addressed a lot of the issues that the 6.0L had and had a short run because Ford used it as a stop gap to get their own 6.7L out. Many of the issues with the 6.4 are related to the emissions equipment that was mandated. Maintain the emissions equipment (expensive but worth avoiding issues) or get rid of it with the knowledge that you may get cited. Current mileage on my truck is 143k miles.

    My truck in particular falls into the brodozer category because it is a big lifted diesel. I typically daily drive it unless I am knowingly going downtown or into parking structures it will not fit in. Average in town mileage lately is 13.5mpg with little attention paid to trying to save fuel. Average on highway is currently about 18mpg at 80mph. I live in a mountainous state and there are a lot of inclines that I drive on when on the freeway. When headed west of Albuquerque mpg does go up to 20-21 at that speed. I have very specific reasons as to why I have each part and why I chose a brand and a place to purchase it. If you have questions about a part feel free to ask.

    Relevant modifications to this thread are:
    6" rough country lift
    Fox 2.0 IFP shocks
    Smittybilt M1 front and rear bumpers
    Superwinch Talon 12.5sr
    37x 13.50 20 Toyo RTs
    37x 13.50 20 Toyo MT full size spare with about half tread life
    Bilstein 5100 series steering stabilizer
    Complete Moog front end
    Redhead steering box
    Trail Tested MFG 12" bed rack
    Tepui Ayer with winter hood

    Upcoming modifications:
    King shocks
    ARB air lockers front and rear
    4.10/4.11 gearing
    Titan fuel tank
    Tepui Autana XL Ruggedized
    AMP retractable steps or possibly sliders

    When I am not using my truck for daily driving and family in-town activities I do short off-road trips with my 4 year old daughter. Summer of 2018 my wife and youngest daughter will be joining us and we will be doing overnight to 2 to 3 night camping trips and exploring the back-country of NM.
    Attached Images Attached Images

  2. #2
    Join Date
    Jul 2012
    Location
    Whistler, BC
    Posts
    244
    Did you manage to fit the 37" spare underneath? Currently just have mine in the bed with the entire lift mechanism removed.
    2016 F350 CCLB FX4. 7" One up Offroad-Icon-Fox suspension. 38x13.5-18 Toyo MT.

  3. #3
    Join Date
    May 2015
    Location
    Albuquerque, NM
    Posts
    107
    Mine is in the bed as well. I have read that some people fit it under there, I haven't bothered to try. I haven't had a situation where I needed more room other than a short trip to get a couple of yards of top soil or gravel. I will remove it for that.

  4. #4
    Join Date
    Jun 2011
    Location
    Ohio
    Posts
    1,216
    I often scrounge another XL Superduty wheel from a junkyard and keep a regular sized tire under the truck incase the large tire in the bed rolls away or also gets punctured. A little tire is better than no tire for times where the bed space is needed.

    6" lift! That is big. The 6.4 worked fine for me. I think one in our fleet had a bad radiator, but that could happen to any brand.
    2017 Ford F250
    '02 Honda CRF450r,
    '04 Ford Mach1
    '12 Suzuki DRZ400S
    '12 Ducati Panigale 1199S

  5. #5
    Join Date
    Jun 2013
    Location
    Indiana
    Posts
    675
    The bad radiator is s common issue, the side tanks bend and split wide open

    The problem is typically cab bushings/isolators are shot and worn out very prematurely

    They only made the 6.4 for three years, for a reason

    Good video
    https://www.youtube.com/watch?v=mDdrvl9TExI
    Last edited by D45; 11-11-2017 at 02:49 PM.

  6. #6
    Join Date
    May 2015
    Location
    Albuquerque, NM
    Posts
    107
    Good to know about the cab isolators. Will have a look at mine and replace if they seem worn.
    Quote Originally Posted by D45 View Post
    The bad radiator is s common issue, the side tanks bend and split wide open

    The problem is typically cab bushings/isolators are shot and worn out very prematurely

    They only made the 6.4 for three years, for a reason

    Good video
    https://www.youtube.com/watch?v=mDdrvl9TExI

  7. #7
    Join Date
    Sep 2012
    Location
    San Diego, CA Originally from Huntington Beach, CA
    Posts
    965
    Sub'd for another diesel build
    Truck: 2005 Chevy Silverado 2500HD 6.6 Duramax 4x4
    http://www.expeditionportal.com/foru...49#post2044349
    Trailer: 6x10 cargo conversion
    http://www.expeditionportal.com/foru...ld-goods-mover
    2006 Toyota Tacoma 4x4 (sold)

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