Truck built for speed
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Dec 12, 2020.
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PoleCrusher, blairandgretchen, Roger McG and 4 others Thank this.
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Some of the old Bull Racks used to be tough to catch too!
wore out, mile marker 27 and spsauerland Thank this. -
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.
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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.
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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. -
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.
mile marker 27 and blairandgretchen Thank this. -
What’s better the 13DO or a 15DO and what rears with each? I’ll have 24.5 rubber.
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