400 hp vs 505hp

Discussion in 'Questions From New Drivers' started by Charles masterson, Aug 12, 2020.

  1. Charles masterson

    Charles masterson Bobtail Member

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    Anyone know the difference in fuel mileage between 400 vs 505 hp engine? Just curious
     
    singlescrewshaker Thanks this.
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  3. TripleSix

    TripleSix God of Roads

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    Loaded heavy, all other things equal, running all 48,...

    ...505hp will both outperform and get better economy the 400. If you pull light loads or are a flat lander, 400 is better.
     
  4. skellr

    skellr Road Train Member

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    "Charles Masterson"? I'm going to guess your location, I could be wrong.

    400 is better if you running north and south along I-5. East and west to colorado I'd go for 505
     
  5. abyliks

    abyliks Medium Load Member

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    400 is for the bean counters that went to college so they think they know trucks

    505 is for the guys they actually know trucks
     
  6. Aamcotrans

    Aamcotrans Heavy Load Member

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    It’s all about gearing and how you use the accelerator.
     
    stillwurkin Thanks this.
  7. SoulScream84

    SoulScream84 Medium Load Member

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    That being said the greatest way to get the best economy is keeping that door shut, and pay attention to driving habits.
     
    650cat425 Thanks this.
  8. Brettj3876

    Brettj3876 Road Train Member

    Get the 505 and gear it for the terrain you'll run the most.
     
    650cat425 Thanks this.
  9. LoboSolo

    LoboSolo Medium Load Member

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    Or haul freight that pays good enough you quit giving a ###### about your fuel mileage, because getting to the next good-payin load makes up for driving 75 to get there quicker.
     
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