Olds 307 to Buick 350... motor mounts?

Discussion in 'V-8 Buick Powered Regals' started by kthelen, Aug 25, 2017.

  1. kthelen

    kthelen Member

    Simple question, but since a quick search didn't find it...

    I have here an '87 Regal with its original Olds 307. My plan is to put in a Buick 350. Right now I'm trying to gather all the needed parts before I rip into it.

    I know the Buick 350 is supposed to be a drop-in replacement for the 3.8 V6. But, since that's not where I'm starting, what I need to know is...

    1) What "upper" motor mounts will I need? (The 350 still has mounts from the '70 Skylark it came out of. Should I be ordering and swapping on Buick V6 mounts?)

    2) What "lower" mounts will I need? (15yrs ago I did a 3.8 to Olds 307 swap in a Regal... been too long, but I seem to recall the Olds and Buick motors used different frame pads. True? If so, is there a source for reasonably priced Buick ones, aside from lucking into a junkyard car with the motor already pulled?)


  2. sean Buick 76

    sean Buick 76 Buick Nut

    Hi keith, easy swap i did it once in a 80s regal that had a 307. I removed it, and the engine frame pads and swapped in 3.8 buick v6 frame pads and then bolted in a buick 350 using v6 engine mounts. Electric fan and a nitrous shot and it was a lot of fun... Used a 6 speed tremec after the th350 failed and it was a fun car.
  3. MrSony

    MrSony Well-Known Member

    Swapped my 3.8 to a 350, V6 out, 350 in. As sean said you'll need to located 3.8 frame pads. I used 3.8 mounts as well. Worked great.

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