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7.3 preformance ?

Discussion in 'Ford Trucks' started by Jay brown, Mar 14, 2007.

  1. Jay brown

    Jay brown PlowSite.com Addict
    Messages: 1,783

    recently i purchased a 89 international tractor truck to replace our 2000 f 550, due to the increased DOT presence on the highways, and the fact that we were grossing 39k. the NA 7.3 in the 89 is rated @ 160hp and the f 550 PSD is @235hp, with the very low gearing in the 89, i thought it would pull ok compared to the f550. i was wrong, it has some power issues for the weight that i'm hauling. i would rather not sell the truck. anyone have any general ideas to increase the hp and the apx $ it could cost. or would it be better to find a new motor for it? also it has a 5 speed for gears.
  2. Oshkosh

    Oshkosh PlowSite.com Addict
    Messages: 1,655

    Sad to say...

    Sad to say, should have held out for a DT466.
    The 6.9 and 7.3 in the S series are gutless.From my experience you'd be lucky to have any road speed over 55mph once you get it to pull.
    Gearing, maybe a two speed rear end would help but they are limited.
    You did a nice job on the rehab,looks good.

  3. Big Dog D

    Big Dog D PlowSite.com Addict
    Messages: 1,134

    The DT 466 is a hell of a motor!!!!!!! I have owned three of them they are pretty darn close to bullet proof.
  4. M&M Services

    M&M Services Senior Member
    from midwest
    Messages: 501

  5. Oshkosh

    Oshkosh PlowSite.com Addict
    Messages: 1,655

    Just saw this...

    This just came out in the local classifieds;
    Don't know how the auto would be??? Probably low on the highway speed.

    1988 Int DT466 Diesel - $6,750
    auto, CDL cheater, newer nose, drs upgrade, great chassis for dump, 10’ P/A pwr-angle plow, runs great
    Date posted: 3/15/2007 11:24:12 AM
    No. Reading, MA
    Phone: (617) 908-8139

    1988 DT466.jpg
  6. EFI

    EFI Member
    from NH / NB
    Messages: 62

    466s are indestuctable with very little maintenance.