SBM Waater pump bolt holes

Small Block Mopar Engine

  1. 512Stroker

    512Stroker We are all here because we are not all there.

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    On a 69 LA 340 which water pump mounting bolt holes are not blind and are drilled into the water jacket of the block? All?
    Thanks in adavnce
     
  2. burdar

    burdar Owen's Dad

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    Of the 7 water pump mounting bolt locations, 3 of them are threaded and 4 go all the way through into the engine block. The only holes open to water are the 2 directly below the large coolant holes.

    eng2.png
     
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    • pishta

      pishta I know I'm right....

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      the long ones.....check 3rd one...my 360 had this one open too. Maybe just oil..
      bolts.jpg
      Photo from FABO
       
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      • yellow rose

        yellow rose Overnight Sensation FABO Gold Member

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        What GD is that? Never seen that particular one before. Interesting.
         
      • pishta

        pishta I know I'm right....

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        Thats a GD-318N from the old CAT catalog. Cheap and effective but N/A now. The Milodon original has the idler on the opposite side. Lots of the Speedmaster stuff looks very similar to the C.A.T. stuff and its all China produced unless otherwise stated.... :poke:
        CHENGDU HI-TECH INDUSTRIES CO.,LTD WELCOME YOU!
         
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        • 67Dart273

          67Dart273 FABO Gold Member FABO Gold Member

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          Also be careful about BOLT LENGTH. There is one "magic hole" that can go in the water jacket and break the lower end of the cylinder skirt, requiring great amounts of bad language, and money to repair.
           
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          • pishta

            pishta I know I'm right....

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            Agree, the 3rd hole down on both sides especially the driver side is 3/4 inch from a cylinder wall! Measure twice, torque once.
             
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