3406c 3.55 rears 15 speed...mpg?good motor?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by favored, Jun 1, 2011.

  1. rank

    rank Road Train Member

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    Feb 11, 2010
    50 miles north of Rochester, NY
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    I'm getting 5.0 to 5.6 out of the truck in the sig pic playing around at 60 mph in the Adirondacks with 3.90 and a 15 over. I bet I could nudge 6.0 with a 13 or 18.
     
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  3. BigCam9670

    BigCam9670 Medium Load Member

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    Jun 12, 2012
    Hudson, NY
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    Yep, another "C" lover here. If it is fully mechanical they are hard to beat. My brother runsa 93 379 with an 18 and 3.73's that gets 6.2-6.5 all day running the northeast pulling tanker, stepdeck and dump trailer. All stock will keep right up with 550hp E models on the hills. Keep the valves adjusted and some lubricity in the fuel and they will last a long long time.
     
    Jmlviper213 Thanks this.
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