12.7 detroit upgrades

Discussion in 'Trucks [ Eighteen Wheelers ]' started by prerunner404, Jun 21, 2016.

  1. swaan

    swaan Road Train Member

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    Jul 12, 2009
    BC canada
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    Yes it's a pre egr 2000 year 14L .
    I'm going to look into what I got for injectors and go from there.
    Sure sounds like that's the issue thou.
     
    Intothesunset Thanks this.
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  3. prerunner404

    prerunner404 Medium Load Member

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    Aug 3, 2011
    lake havasu city az
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    Your one of the lucky guys with one of those motors. Im a bit jealous. Like they say no replacement for displacement.
     
  4. savage02

    savage02 Light Load Member

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    Dec 21, 2007
    Upstate, NY
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    So hows it running pulling a load? How much boost are you getting out of it now?
     
  5. prerunner404

    prerunner404 Medium Load Member

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    lake havasu city az
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    Thing is a freight train now. Will pull hard in every gear and even if I lug it down it will recover and pull up through the rpm. I see around 36-38psi on boost now on a hard pull. I just bought a 18 speed for the truck so that's going to greatly improve the trucks pulling ability too. Over the 10 speed.
     
    Vampire and tnpete Thank this.
  6. T800H

    T800H Medium Load Member

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    The Keys
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    yes, that 18 will make a good difference, a friend of mine had a 10 speed and swapped it to an 18 and it was day and night, a lot better, quicker on every gear and much easier to drive.
     
  7. prerunner404

    prerunner404 Medium Load Member

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    lake havasu city az
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    Ya I can't wait to get that 18 speed in. The truck will be some much more versatile once installed.
     
  8. truckerbangin

    truckerbangin Light Load Member

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    this video me running with 70000lbs series 60 12.7 rebel tuned with 1702 and 10speed. have a new motor i'm putting together bigger turbo and injectors + a 18speed so i'm going to have a whole new monster
     
    Vampire Thanks this.
  9. prerunner404

    prerunner404 Medium Load Member

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    lake havasu city az
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    Looks good. You going to do a bigger can on your new motor?
     
  10. gokiddogo

    gokiddogo Road Train Member

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    Ontario Canada
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    has your mpg changed? I keep thinking about doing this (only changed to 171702 and using a bully dog tuner) but at the same time I am less confident as to how much life my truck has left in it. Keep saying 1 more year .. lol
     
  11. prerunner404

    prerunner404 Medium Load Member

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    lake havasu city az
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    Yes I'm running around 6.4-6.5 mph with my 379 long good Pete. I used to run around 6-6.1 mpg.
     
    Vampire and gokiddogo Thank this.
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