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01 silverado 1500 13xtreme offroad engine question

Discussion in 'Chevy Truck Talk & GM News' started by Monkeys214, Mar 23, 2013.

  1. Monkeys214

    Monkeys214 New Member

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    I have been told that this truck was made by special order only and that the 5.3l has a 327ci vs the other 325ci 5.3l which is a much better engine. Can anyone verify these claims? Or does anyone know of this package that can offer some insight? She has a superchip, AFE cool air and a few other tid bits as I'm still exploring whats been done, runs like a dream so not complaining either way, just good to know if this is true. Thanks everyone for reading.
    #1
  2. Enkeiavalanche

    Enkeiavalanche Moderator

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    Was it built by a Upfitter? ( A Pkg Co that builds trucks and cars for the dealerships at High Markups)
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  3. Monkeys214

    Monkeys214 New Member

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    I know thats a distinct possibility, although I'm not sure how to tell. I know when the DMV runs it, it shows as a base silverado 1500 LS with 4.7. (wrong engine size)
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  4. Enkeiavalanche

    Enkeiavalanche Moderator

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  5. Monkeys214

    Monkeys214 New Member

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    If you are talking about the back of the truck then no. a small oval sticker from a local used car/truck dealer but thats it

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    I am thinking it's something aftermarket more and more..although no extra decals (other than 13xtreme) to indicate a company. Just got off the phone with the local Chevrolet dealer and they had never heard of it..
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