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5.7 vs 5.3

Discussion in 'Towing' started by OBS ROCK, Feb 9, 2011.

  1. OBS ROCK

    OBS ROCK I'm Awesome

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    I was wondering which engine is better for towing? The 5.7 vortec or the 5.3? I tow off and on and would like to know which is better?
     
  2. FastOrange

    FastOrange OBSless

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    5.7L, more torque.
     
  3. OBS ROCK

    OBS ROCK I'm Awesome

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    How bout the 6L vs 7.4L
     
  4. Butch

    Butch I'm awesomeR! Staff Member

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    Stock - Stock
    5.7L Vortec
    255HP/330

    5.3L Vortec
    285HP/325

    The peak numbers are basically the same but the LS has a flatter torque curve and you can add power easier, a tune alone really wakes them up. Once you swap to an LSX, you have a whole family of interchangeable parts and would be a direct swap if you upgraded to 6.0 later. The older SBC is a great motor but limited in stock form, they also can make awesome numbers but still wouldn't hold a candle to a LS with equal about of money invested. I plan to swap to a 5.3 or 6.0, its gonna be a bitch to get done but after seeing what these motors can do it'll be worth it when I'm done.

    Edit: A friends 4.8L equipped NNBS in stock form felt to have as much power as I did in my 13 year old 5.7L, we both have 3.73s.
     
    Last edited: Feb 9, 2011
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  5. FastOrange

    FastOrange OBSless

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    which 7.4L?
     
  6. OBS ROCK

    OBS ROCK I'm Awesome

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    The 454?
     
  7. FastOrange

    FastOrange OBSless

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    What year? like Vortec? TBI? Carb?
     
  8. OBS ROCK

    OBS ROCK I'm Awesome

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    Oh haha the vortec
     
  9. FastOrange

    FastOrange OBSless

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    well, thats a hard comparison, 454 is a Big Block, and the 6.0L is a Small Block, I would prefer the 454 myself, but ive always been into BBC's.
     
  10. OBS ROCK

    OBS ROCK I'm Awesome

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    Ok, thanks man
     

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