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  1. #1

    Default Which Tranny FITS???

    hi, Im new, I have a 1999 Silverado with a 4.8, V8. Automatic extended cab. Wondering if a tranny from a 4.3 engine will fit? What else will fit?

    Last edited by chevyman52; 01-02-2011 at 11:23 AM.

  2. #2


    Well, depending on the year of the truck with the 4.3 v6, if it is a 4L60-E, it should fit. Are both trucks 4wd? If they are then you do not have to change the tail housing of the trans However, i dont know if the wiring harness would be any different.
    Supposedly GM put some of the stronger 4L80-E transmissions behind the 4.8L in some vans, but again, dont know if the wiring harness if different. Good luck my friend
    '00 1500 4x4 4.8l
    single glasspack
    daily driver/workhorse

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