Buick 350 (X-Body) Frame Engine Mounts

Discussion in 'Parts wanted' started by concialdi, Feb 14, 2021.

  1. concialdi

    concialdi Member

    I am doing an Olds 260 to Buick 350 engine swap in a 1975 Skylark SR. It appears that Olds and Buick had different frame engine mounts so I am in need of the frame engine mounts for a Buick 350.

    I am not sure on years (I am pretty sure that 74 and 75 will work but do not know outside of that). The skylark SR was an X-Body so hopefully that helps.

    Let me know if anyone around here has them!
  2. partsrparts

    partsrparts Silver Level contributor

    If the 350 frame pads sit the engine to high than you will have to go with the Buick odd-fire v6 frame pads and poly v6 engine mounts.
  3. alvareracing

    alvareracing Platinum Level Contributor

    I have ones from a 73 350 Century if that will work for you.

  4. concialdi

    concialdi Member

    Hi Fernando,
    Could you post some pictures of the frame pads, please? I am still trying to figure out what I need.

    It looks like the Century and the Skylark were different body types but I am not sure if that matters or not.

  5. alvareracing

    alvareracing Platinum Level Contributor

    Give me a few days here, I need to dig them out.

  6. sean Buick 76

    sean Buick 76 Buick Nut

    Yeah the 73 was a A body and the 74 was a X body
  7. 78Regal350

    78Regal350 Well-Known Member

    When swapping a Buick 350 into a G body the 3.8 v6 mounts/brackets are needed for correct engine height. The frame pads/brackets should be the same from anything with a Buick 3.8 or 4.1 (p/n 1257796 RH, 1257797 LH) except the H body, so my guess is that the X body will need 3.8 mounts as well.

    The 3.8 was very common in the 80s G bodies, so you might have luck finding someone who’s ditched the v6 for an LS or something.
    Last edited: Feb 16, 2021
  8. concialdi

    concialdi Member

    Thanks for the response everyone.

    Fernando: Let me know when you get a chance to dig them out and could you post a couple pictures?

    78Regal: Where are you getting those part numbers? Are those for mounts or the frame pads? I am starting to think that Buick frame pads (either V6 or 350) would work for my application. I have another post about the V6 frame pads too. So hopefully I am able to shake something loose.
  9. alvareracing

    alvareracing Platinum Level Contributor

    sure will
  10. alvareracing

    alvareracing Platinum Level Contributor

    here is a pic of what I have, sorry but I was wrong on the pads I have. I thought I had small blocks but they say BB (bigblock). I don't think they will work for you. Others mention you need V6 ones and I believe they would work for you. IMG_0001.JPG
  11. BrunoD

    BrunoD Looking for Fast Eddie

    I have the Lark mounts here with me,just waiting for some young relative to come over to send pictures of them.Bruno.
  12. concialdi

    concialdi Member

    alverracing, thanks for digging those out, but I believe that you are correct that those will not work for a 350.

    BrunoD: Thanks for digging them out. I did get a set of V6 pads but if I can find the 350 pads then I would like to have them as well. I know you said it looked like one set was taller than the other, but I am not quite sure which one I would need. I am trying to put my rebuild 350 into a 75 Skylark, so whichever set of frame pads would work best for that application I will probably snag them from you.
  13. v8regalowner

    v8regalowner Silver level contributor

    I have a pair of 350 frame pads. I believe they were either out a skylark or a lesabre. I have the mounts out of both and they look the same so I'm not sure which is which.

    Attached Files:

Share This Page