Block Z Bar

Discussion in 'U-shift em' started by agetnt9, Mar 31, 2015.

  1. agetnt9

    agetnt9 Agetnt9 (Dan)

    20150331_170321_resized.jpg each is i think 4 a 350 cid 1972 or 71 . Please verifi . tghanx
     
    agetnt9, Mar 31, 2015
    #1
  2. CJay

    CJay Supercar owner Staff Member

    Ball studs are the same between SB and BB. Those are Chevelle style with the rubber seal on the shank. The Buick one is different. I have one I could post a pic of.
     
    CJay, Mar 31, 2015
    #2
  3. CJay

    CJay Supercar owner Staff Member

    Correction- small blocks take the seal on the shank, big blocks take and external seal. So technically they are small block versions. But they interchange with big blocks.
     
    CJay, Mar 31, 2015
    #3
  4. agetnt9

    agetnt9 Agetnt9 (Dan)

    Thanx, but 1 is 9/16" and other is 1/2" wrench to remove/install. Witch one is the one for a buick 350 . i know they will both fit just wondering so i know you no.. ha
     
    agetnt9, Apr 1, 2015
    #4
  5. CJay

    CJay Supercar owner Staff Member

    Not sure. I would take an educated guess and say the one on the right looks to have the correct shape at the base. Maybe someone else can chime in to give a second opinion
     
    CJay, Apr 1, 2015
    #5
  6. SSsedan

    SSsedan Active Member

    One is GM part # 3816341 used on 64-72 Oldsmobiles and probably Buick small blocks. It used a rubber seal sold separately.The other is GM part # 3866568 used on most GM 73 and up, comes with the seal, and is a replacement for the earlier studs. They both have 1/2"-13 threads and a 7/8" ball.
    Russ
     
    SSsedan, Apr 17, 2015
    #6

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