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Gas mileage on an F-250

Discussion in 'General Automotive' started by JaSkynyrd, Jan 26, 2012.

  1. JaSkynyrd

    JaSkynyrd [OP] Ron F. Swanson

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    This guy is crazy, right? 21 mpgs on an F-250 with 645 hp and mud terrains?

    All I can figure is maybe, MAYBE it's a diesel and that mileage may be possible, but I have never heard heard of a diesel making 645hp...
     
  2. Kelson

    Kelson My Truck is Cuter than Yours

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    645 isnt that much power for that truck. you could expect to be able to build that motor to beyond 1000hp, although past that you'd be limiting the daily drivability of that truck.

    you have to remember now with a chip and a turbo upgrade you could be making this kinda power. you might not even need to meth it.
     
  3. hard2kill

    hard2kill Well-Known Member

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    21mpg with a diesel is very realistic as far as 645hp he needs major mods to achieve that with that truck... Like douuble pumps,upgraded turbo,injectors, a good legit tune,full tbe,arp head an main studs etc......or hes full of shit.. Ask for a dyno sheet ... I came from my Duramax that I built and a large diesel community ...
     
  4. Dromlace

    Dromlace Well-Known Member

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    my friends dad had a similar f250 2011 w/ the 6.7L and it got 20+ mpg. they're great trucks, very spacious, ride well, and are nicely designed


    with that being an 08 i'm not sure about the similarities
     
  5. focotacoma

    focotacoma Well-Known Member

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    Im getting there......
    As far as I can tell you could probably only get about 570 HP out of one of those KEM tunes with that truck but don't ask me....
     
  6. Jon4x4

    Jon4x4 I said MEOW!!!

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    Billies, toy tec springs and camburg UCAs, and of course the heavy right foot mod
    more horsepower = less throttle
     
  7. Who Dat Popcorn

    Who Dat Popcorn Dafuq

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    Depends on the driver :D
     
  8. Trapper6speed

    Trapper6speed Hacksaw engineer

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    If its a Duramax the stock bottom end is only good for 450hp. About same with the ford. The Cummins is the only one that can handle more power without the major motor mods.
     
  9. maineah

    maineah Well-Known Member

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    Decimal point in the wrong place common error.
     
  10. memario1214

    memario1214 Vivid Illumination Vendor

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    I don't think that he is making 645 horse... But with a strong tune and opened up exhaust components I could see that truck making somewhere in the range of mid 500s.
     
  11. mentose457

    mentose457 Well-Known Member

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  12. JaSkynyrd

    JaSkynyrd [OP] Ron F. Swanson

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    So there are 645 hp diesels out there? How much torque would that make?
     
  13. Trapper6speed

    Trapper6speed Hacksaw engineer

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    True 645 HP in a diesel. Torque should be around 1000ftlb give or take a hundred. I know people that do 750hp or better and drive them daily.
     
  14. 2004TacomaSR5

    2004TacomaSR5 Well-Known Member

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    We used to have a 02 Chevy Duramax 2500 quad cab, long ass (8ft I think) bed and got in the 20 range, really depends on how you drive them.
     
  15. JoshM

    JoshM Active Member

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    21mpg out of a 6.4L PSD is VERY unlikely. That may be what his overhead says, but he's likely getting 13-15mpg, if he's easy on it.

    If you want a good MPG diesel, get an old 12V Cummins with a manual trans.

    It is possible to do high teens with a newer truck, but you'd need to take off a bunch of unneeded shit, a good live tune, and an easy foot.

    Pfff, there's 1000whp+ diesels out there. A guy at work DDs a 600hp Cummins. Another DDs a 550hp Powerstroke. Our drag truck is 1200hp, our "pulling" truck has 900hp.

    Here's the drag truck on YouTube. 942whp... with it only firing on 5 cylinders and with wheel spin ON the dyno.

    http://www.youtube.com/watch?v=r95WCdON5io


    http://bdpshop.com/
     
  16. Trapper6speed

    Trapper6speed Hacksaw engineer

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    Josh I hear someone has a 6.4 in the 9s. I know Garmon had a few built 12valves making 30mpg too.
     
  17. maineah

    maineah Well-Known Member

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    If they are saying there are getting that kind of mileage they must be running an add to sell it, it all ways goes up when it's for sale no mods required.
     
  18. Rusty 06 4x4

    Rusty 06 4x4 NBHNC

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  19. IDtrucks

    IDtrucks Just out for a rip are ya bud?

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    my buddys dad has the same truck as the one in the ad (with the gas engine) and it gets about 11-13. i have no clue how someone could get it at 21. sorry, just seems to unlikley
     
  20. Trapper6speed

    Trapper6speed Hacksaw engineer

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    Delete the emission crap and programmer I hear an honest 19-20 mpg but not 640hp.
     
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