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ready for a new engine q's

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by wheelin247, Jan 8, 2001.

  1. wheelin247

    wheelin247 1/2 ton status

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    ready for a new engine q\'s

    i soon gonna perchase and crate engine i plan on running 40+ inch tires on my k5 im lookin a 502's one has 500 horse power and 500 ft lbs and the other is a heavy towing engine it has 330 horses and it make 512 ft lbs and 2800 rpms what do i want low end torgue or both horse and torgue ?...thanks
     
  2. HarryH3

    HarryH3 1 ton status Author

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    Re: ready for a new engine q\'s

    I'd go for the horsepower. Who cares if the higher HP engine is down on torque at lower RPM? You'll still have GOBS of torque available. The tow motor is made for folks that tow very heavy loads on long trips. They need all the low end torque they can get. I like having a bit extra available on the top end for passing, etc. [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     
  3. Emmettology 101

    Emmettology 101 3/4 ton status

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    Re: ready for a new engine q\'s

    I would go with the 500hp one like Harry said.

    I wonder why they drop the HP so much for the towing model. I would think they would still want the HP, but bump up the Torque...

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; <A target="_blank" HREF=http://emmett.coloradok5.com>http://emmett.coloradok5.com</A>
     
  4. Executioner

    Executioner 1/2 ton status

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    Re: ready for a new engine q\'s

    You really need more complete motor specs.
    Or better yet a picture of the HP, or Torque curve for both motors.
    Good luck
     
  5. mudhog

    mudhog THEGAME Staff Member Super Moderator

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    Re: ready for a new engine q\'s

    well it would depend on what you want do you want to go fast or do you want power? are you mud bogging or rock climbing? if you are mud bogging go horse power if you are rock or trail running go with the torque. on the street you would want the horse power on the trail i would say torque

    s.smith 77blazer lookin 4 mud
     
  6. HarryH3

    HarryH3 1 ton status Author

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    Re: ready for a new engine q\'s

    Mike, I think the big difference is in the cam (and possibly different heads). A milder cam will build torque earlier at the expense of HP as RPM rises. But for 4-wheeling, I really wouldn't care if I was getting 450 lb/ft, instead of 500 lb/ft at 1500 RPM. 450's plenty! [​IMG] I'm more bothered when I pull out to pass on a winding mountain road and there isn't enough oomph to boogie!

    In theory, I gave up some bottom end torque on my TPI 383 by porting the heads and putting in a bigger cam. It still has enough torque to break loose the 35's. How much more do I need? [​IMG] What's a blast though, is the feeling that you just engaged the warp drive as the cam and heads really start breathing. Passing with this thing is FUN!!! [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    <A target="_blank" HREF=http://ThunderTruck.ColoradoK5.com>http://ThunderTruck.ColoradoK5.com</A>
     

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