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Allison 6 speed transmision?

Discussion in '6.9L IH & 7.3L IDI Diesels' started by jrollf, Jul 24, 2020.

  1. lotzagoodstuff

    lotzagoodstuff Supporting Member Supporting Member

    Likes Received:
    May 19, 2007
    Maple Valley, WA
    Spec'ing a refuse truck takes a lot of knowledge. I've seen municipalities spec CNG trucks with "all the heaviest pieces because they wanted them to last long", and of course because they were spending other people's money :eek:.

    Apparently a 4000 series Allison with the wrong rearend gears will produce a road slug.

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