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  1. #1
    Join Date
    Mar 2006

    Vortec 8.1 HO 525HP

    How long has GM been producing this Vortec 8.1 HO 525HP? See link below.

  2. #2
    Platinum Member Platinum Member CigDaze's Avatar
    My Boats:
    Cigarette 35 Cafe Racer
    Join Date
    Jun 2001
    St. Petersburg, FL

    Re: Vortec 8.1 HO 525HP

    That's the HP3 version, or "Vortec" engine used in racing.
    I think it was first used in late 2001 or early 2002.

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