1967 318 to 360 motor mount help please.

Small Block Mopar Engine

  1. Johnny Mac

    Johnny Mac www.blueprintengines.com FABO Vendor

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    Hello guys,

    trying to help a customer out. Every SB mopar i have ever owned had 2 bolt hole bosses toward the front, and one toward the rear.

    I'm aware of the 318 to 360 "spacing" difference where some install a spacer.

    BUT, i have a customer with a 1967 318 that appears to have 2 bolt bosses toward the rear...and only one up front.

    This must be an early LA thing, as i have never seen it before, and he now has a motor mount where only 2 holes line up.

    To make it equally confusing, i looked up a 360, pre 72 motor mount, and it only has what appears to be a through bolt...so it'd free swing, other than being confound by the biscuit mount in the k frame.

    Can someone tell me what i need to have this gent do?

    just run it with the upper bolts only...so it swings?
    drill the "missing" hole in his old 318 bracket to get a 3rd bolt in?

    thank you!!!!!


    here is what appears to be a 360 motor mount.
    pio-602250_xl.jpg
    the old engine is his early 318. the blue one is every other LA i have ever seen.
    imagejpeg_0(4).jpg DSCF4961.jpg
     
    Last edited: May 5, 2020
  2. Johnny Mac

    Johnny Mac www.blueprintengines.com FABO Vendor

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    I guess my question boils down to..is it ok to drill the "missing" hole, in the old 318 mount, so he can run 3 bolts...?
     
  3. motorpirate

    motorpirate serial mopar owner

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    That is a leftover 273 thing.
    We had to add an ear to the right mount to give it "2 front holes" when we swapped in a Magnum in its place.
    I would see no harm in adding a hole.
     
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    • moparmarkk

      moparmarkk Well-Known Member

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      the first pic is a B-E mount upside down
       
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      • MOPAROFFICIAL

        MOPAROFFICIAL FABO Gold Member FABO Gold Member

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        Yes, drill it.

        66 was the intro casting for 318 and drop of the poly..273 mount ear carried over it seems? That perhaps explains the castings with 4 ears on each side? They added the lower front ear... later they decided they use 3 instead of 4, be it cost or.. interesting to know how they may have evolved.
         
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        • Johnny Mac

          Johnny Mac www.blueprintengines.com FABO Vendor

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          Lol wow I'm dumb. Yup!!
           
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