2004 4300 26' van truck

Discussion in 'International Forum' started by willeo6709, Nov 29, 2015.

  1. willeo6709

    willeo6709 Bobtail Member

    45
    5
    Oct 26, 2015
    0
    I recently bought a 2004 ( don't ask me if its a 2004 or 2004-1/2, I have no idea how you tell, yet) DT466E, allison auto, 2' morgan dry van, liftgate. The truck has 327,000 miles, feels good lightly loaded. Put a "max load in it and it takes it about 4 miles to make it to 55 mph, and forget 65 unless you are going downhill. I changed the oil, put on a new fuel filter. I read somewhere that DT466's have a "rock catcher" under the fuel filter. I did not really see anything and was hoping to find a manual page or diagram of that.
    The truck also seems to "miss" when heavily loaded, it just does not seem as smooth as it should be. It is kind of there empty but not nearly as pronounced.
    I would LOVE to have more power. This thing started life as a Ryder Truck. The valvecover says 190 hp. I have read the 466e's have limited "turn up" but there are a couple places near me that claim " big rig tuning ". I have also read my first stop maybe shoudl be an IH dealer and see what its turned down to.
    Whats your experience squeezing some more power out of this vintage dt466's?
     
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  3. StrongArm

    StrongArm Light Load Member

    50
    11
    Apr 2, 2014
    New York, NY
    0
    I have an '04 4300 which has an 03 motor and build date. Its rated 215hp and has a 6 speed Eaton stick. Power had always been acceptable, but I noticed an increase in torque when I had the valves adjusted and all six injectors replaced.
    I would suggest you have it hooked up to a computer to run fuel injector tests, they do wear out and the solenoids go bad which can cause a miss.
     
  4. BarrettL82

    BarrettL82 Bobtail Member

    4
    1
    Dec 9, 2015
    0
    If the engine has not been rebuilt have a shop perform a blow-by test before spending your dollars on it. You can not turn it up because the transmission will not handle the increased HP. Injector replacement and valve adjustment is a good idea after blowby test.
     
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