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DD15 low engine horsepower

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Victor c, May 26, 2018.

  1. May 26, 2018 #1
    Victor c

    Victor c Bobtail Member

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    May 26, 2018
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    Have cascadia that was dynod has a dd15 engine 455 hp but only put 328 hp max on dyno why?
     
    Victor c, May 26, 2018
    Victor c, May 26, 2018
    #1
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  3. May 26, 2018 #3
    gwbushsucked

    gwbushsucked Bobtail Member

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    May 26, 2018
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    U need to get it turned up dd15 can go up to 565 or 570 under warrinty
     
    gwbushsucked, May 26, 2018
    gwbushsucked, May 26, 2018
    #3
    Victor c Thanks this.
  4. May 26, 2018 #3
    Pedigreed Bulldog

    Pedigreed Bulldog Road Train Member

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    May 7, 2011
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    455 rated x 80% loss through the drive line is 364 hp. What rear end gears are in it? 2.xx will further reduce the hp shown on a chassis dyno. Where was it done? High elevations, hot temps, etc...can all work to reduce the number, too. Then, if it's a high mileage engine, things aren't as tight as they once were and the power numbers suffer a little more. Add it all together and you start approaching the 328 hp it showed.
     
    Pedigreed Bulldog, May 26, 2018
    Pedigreed Bulldog, May 26, 2018
    #3
    Victor c Thanks this.
  5. May 26, 2018 #4
    Victor c

    Victor c Bobtail Member

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    May 26, 2018
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    Thank you guys so much for replying It has a 3.42 gear ratio 504,000 miles and
    Is it normal to drop so much?
     
    Victor c, May 26, 2018
    Victor c, May 26, 2018
    #4
  7. May 26, 2018 #5
    Victor c

    Victor c Bobtail Member

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    May 26, 2018
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    How do i do that?
     
    Victor c, May 26, 2018
    Victor c, May 26, 2018
    #5
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