Where to go to get 1980 differential & cover? - NCRS Discussion Boards

Where to go to get 1980 differential & cover?

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  • Billy S.
    Frequent User
    • April 23, 2015
    • 52

    Where to go to get 1980 differential & cover?

    Hello All,

    I have a 1980 4 speed which needs a new differential and differential cover (batwing). My differential housing is probably useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring has been jury rigged into place. Whose the best to go to to get one off the shelf? I don't want to rebuild my unit because I don't want to tie my friends lift up while I'm waiting and the differential in the car has already been replaced once (dated 1981).

    Thanks!
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43211

    #2
    Re: Where to go to get 1980 differential & cover?

    Originally posted by William Schoenberg (61142)
    Hello All,

    I have a 1980 4 speed which needs a new differential and differential cover (batwing). My differential housing is probably useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring has been jury rigged into place. Whose the best to go to to get one off the shelf? I don't want to rebuild my unit because I don't want to tie my friends lift up while I'm waiting and the differential in the car has already been replaced once (dated 1981).

    Thanks!
    William------


    I'd suggest Ikerds's Corvette in Bedford, IN. Pat Ikerd passed aways some time ago but the business is still being capably run. You can get a completely rebuild differential unit for about $1,000 + core charge. I don't know if they have the covers, or not. However, even if they do not, I'm sure they could tell you where to get one.

    In Appreciation of John Hinckley

    Comment

    • David H.
      Extremely Frequent Poster
      • June 30, 2001
      • 1521

      #3
      Re: Where to go to get 1980 differential & cover?

      ... useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring...

      William,

      Had same problem with broken bolt. If someone has NOT tried to drill it out, etc, then a machine shop can remove bolt and replace threads with helicoil. I believe machine shop had some kind of “electro” vaporizing machine - however they did it, not very expensive.

      Dave
      Last edited by David H.; April 21, 2018, 10:03 PM.
      Judging Chairman Mid-Way USA (Kansas) Chapter

      Comment

      • Joe L.
        Beyond Control Poster
        • February 1, 1988
        • 43211

        #4
        Re: Where to go to get 1980 differential & cover?

        Originally posted by David Houlihan (36425)
        ... useable as a core, my cover is definately not (someone broke a bolt off in it a loooong time ago) my rear spring...

        William,

        Had same problem with broken bolt. If someone has NOT tried to drill it out, etc, then a machine shop can remove bolt and replace threads with helicoil. I believe machine shop had some kind of “electro” vaporizing machine - however they did it not very expensive.

        Dave
        Dave------


        It's called an Electrical Discharge Machine (EDM).

        By the way, I believe the reason that these bolts seize is due to dissimilar metal (galvanic) corrosion.
        In Appreciation of John Hinckley

        Comment

        • Bruce C.
          Infrequent User
          • December 1, 1988
          • 13

          #5
          Re: Where to go to get 1980 differential & cover?

          Contemporary corvette salvage,Bristol,Pa.

          Comment

          • Edward J.
            Extremely Frequent Poster
            • September 15, 2008
            • 6940

            #6
            Re: Where to go to get 1980 differential & cover?

            William, there's a 80 rear diff on Boston Craig's list, out of Automatic, 30 day warranty. been is dry storage foe 30 years.
            New England chapter member, 63 Convert. 327/340- Chapter/Regional/national Top Flight, 72 coupe- chapter and regional Top Flight.

            Comment

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