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  1. #11
    Ed is offline
    Gold Member Gold Member
    Join Date
    Oct 2000
    Ft.Lauderdale, Fl.

    Re: OT - Can a 4L80E handle towing in OD?

    Quote Originally Posted by robyw1
    the 4L80E is an awesome transmission. Yes you can tow in OD. It is the 4L60E that unless modified will give you trouble.

    Roby...The 4L60E should, or should not, be in overdrive to tow? And...How should it be modified? Thanks, Ed

  2. #12
    Registered jdnca1's Avatar
    Join Date
    Feb 2002

    Re: OT - Can a 4L80E handle towing in OD?

    My 97' 2500Burb (3.73) 7.4L got 13.5 hwy non towing, and about 8 towing 6000#. Sold the truck with 200K on it and no tranny problems and always towed in O/D. The old 7.4 still wasn't using any oil, which I can't say about the 8.1L in the 01' Burb I just sold with only 48k on it.

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