Truck built for speed

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Dec 12, 2020.

  1. wore out

    wore out Numbered Classic

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    CHASIN THE DEVIL'S HERD
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    Just buy a retired chicken truck
    ...have all the speed you need
     
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  3. A5¢

    A5¢ Medium Load Member

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    Some of the old Bull Racks used to be tough to catch too!
     
  4. 6cuda6

    6cuda6 Light Load Member

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    Hhmmmm....general answer is you cant have both unless you go real big power, lots of gears and 2 speed diffs and throw some aero into the mix....lets not forget, deep pockets for fuel.
     
  5. Roberts450

    Roberts450 Road Train Member

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    3.42’s and 11r22.5’s puts my 2ws Cat right in the sweep spot of 1500 at 70mph. Pulls decent out here in the west with 105,500 gross. Not sure of the exact tune thats in it but I asked for it to be set at a 550 when I got the engine from Kustom Truck.
     
  6. The Veteran

    The Veteran Light Load Member

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    Really? Even with a 10speed direct transmission? Thats interesting
     
  7. mile marker 27

    mile marker 27 Road Train Member

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    Mechanical N14.
     
  8. Brettj3876

    Brettj3876 Road Train Member

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    Land of local
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    Not with a direct
     
  9. blairandgretchen

    blairandgretchen Road Train Member

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    3:55 or 3:70 should be fine. Research your overdrive ratio options in a 13 speed if you want to fine tune.
     
    mile marker 27 Thanks this.
  10. AKDoug

    AKDoug Medium Load Member

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    My 2021 T880 is set up with 3.42's and running 24.5's. 18 spd manual. Theoretically tops out at 105mph at governed 2000 rpm.
     
  11. mile marker 27

    mile marker 27 Road Train Member

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    What’s better the 13DO or a 15DO and what rears with each? I’ll have 24.5 rubber.
     
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