Backing Plate compatability?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Hossbaby50, Mar 21, 2002.

  1. Hossbaby50

    Hossbaby50 3/4 ton status

    Sep 1, 2001
    Likes Received:
    Peoria, AZ
    Ok, I have a question. Will a backing plate off a late 70's 3/4ton D44 work with a 3/4ton rotor and hub off an 81-91? This is out of an earlier post.

    1. Backing plates are ALL diffferent. Both 1/2 and 3/4 ton for both designs are NOT the same thing. 3/4 tons are larger diameter than the 1/2 tons. There are currently 6 different types of backing plates. The 1/2 ton has the 73-76, 77-80, and 81-91. 3/4 ton is the same years, but only bigger around.

    They are all different, but will it work? I just want ot make sure. Also I have a stupid question. Hub assemblies wear out correct? Thanks
  2. HarryH3

    HarryH3 1 ton status Author

    May 31, 2000
    Likes Received:
    Georgetown, TX
    I'm not sure on the backing plate question, but a hub assembly really should last about forever. The "wear points" are the bearing races, which can be replaced. /forums/images/icons/cool.gif So unless someone has seized a bearing and spun the race, or run with the bearings too loose and hogged out the inside of the hub, then they should last for a very long time.

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