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GM B-Body Forum, 77-79 Caprice/Impala Forum

A forum for all the owners and enthusiasts of General Motors B-Bodies from 1965-1996, but dedicated to the owners of 1977-1979 Impalas and Caprices. Join up now!


    transmission cross member

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    samjr1
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    Newbie

    Posts : 2
    Join date : 2017-05-11

    transmission cross member

    Post  samjr1 on Thu May 11, 2017 6:01 pm

    Looking for a transmission cross member for dual exhaust that will work on a 1983 olds delta88

    Thanks Sam 585-703-6030

    Boogie1468
    Junior Member
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    Posts : 12
    Join date : 2015-09-09
    Location : Davisburg, Michigan, USA

    Re: transmission cross member

    Post  Boogie1468 on Sun Jun 17, 2018 2:01 pm

    Hi Sam. There were no factory crossmembers for dual exhaust until 1995 B bodies got the LT engine.
    You can get a crossmrmber from a 95 or 96 impala or caprice. These are welded Stallings not made from tuning. The mounting provisions on the frame rails are not the same as yours. But adding brackets to your frame is not a terribly big job.
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    terry cronk
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    Posts : 212
    Join date : 2015-08-19
    Age : 71
    Location : Mid-Michigan

    Trans crossmember

    Post  terry cronk on Sun Jun 17, 2018 8:54 pm

    I purchased this piece for my 1979 Caprice when installing either 700R4 or a turbo 350.  Mine was 700R4.

    https://www.ebay.com/itm/G-Force-Performance-RCB3-700-Trans-Crossmember-79-90-B-Body-700R4-4L60E/191786805782?hash=item2ca7626a16:g:cY8AAOSwMqBab5ou

    Yes, its a lot of money but fits and super strong.  The transmission mounts holes are about 3/4" back on the 700R4.

    But the mount hole is slotted.  And the outer holes are slotted and its heavy duty.

    Good Luck.

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    Re: transmission cross member

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