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Thoughts on 1st gen CTDs?

Discussion in 'Tow & Trailer' started by thor, Dec 29, 2005.

  1. thor

    thor 1/2 ton status

    Joined:
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    Location:
    Wa
    I just picked up a 2wd 89 dodge 3/4 ton with a CTD. Who has experience with them and what mods have you performed. Any advice is welcome....

    I'm planning on using it mostly for towing, replacing an 89 C3500 454 dually.
     
  2. K30CJ

    K30CJ 1/2 ton status

    Joined:
    May 16, 2003
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    Location:
    IN
    I had two different first gen Cummins trucks. They are great engines. The transmissions aren't the best though, especially when you turn up the power. Many first gen trucks have been upgraded with better transmissions.

    I did some mods to the '93 W250 - 16cm turbo housing, no muffler, 4" tailpipe, K&N filter and pump adjustments (more fuel). It ran strong and pulled a trailer well. The only problem I had was when towing 13K in the summer with the AC on, it would get hot in the hills. Had to back off the right pedal on the hills and watch the pyrometer and coolant temp. This truck had 3.54 gears. It dyno'd 196HP and 572TQ at the wheels with stock injectors.

    The other was a '79 K30 with an early '91 Cummins conversion. This truck had 4.10 gears and pulled much stronger than the '93, with only minor pump adjustments, K&N and a straight 3" exhaust. No heat problems either. Never dyno'd it.

    They are easy to turn up yourself. I learned a ton at turbodieselregister.com. Lots of knowledge and experience there. It's worth the annual fee. I've switched to a Duramax now, but still addicted to diesel. Let me know if I can answer any specific questions.
     

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