Water pump bolts

Small Block Mopar Engine

  1. V8 Sam

    V8 Sam Well-Known Member

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    I haven't yet.

    I think he was agreeing to post 22.

    Soon as I'm back over there I shall measure.
     
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    • CRUZE 418

      CRUZE 418 FABO Gold Member FABO Gold Member

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      Picture of my old bolt.

      16033044491531390321687.jpg
       
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      • dogbreath

        dogbreath Well-Known Member

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        Helicoil time , use 5¨x3/8 USS stainless as replacements.
         
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        • dogbreath

          dogbreath Well-Known Member

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          WTF , that lower bolt looks like it could be 5/16 , I hope for you sake it is , that would be an easy fix , good luck.
           
        • bbab3

          bbab3 Well-Known Member

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          Just for reference.

          Moparts Tech Archive
          Small Block
          Small Block bolt sizes

          oil pan
          5/16"{18}x 3/4" amount needed 18
          valve covers
          1/4"{20}x3/4" amount needed 10

          fuel pump
          3/8"{16}x1 1/2" amount needed 2

          thermostat housing
          3/8"{16}x1" amount needed 2

          intake manilofld
          3/8"{16}x1 1/2" amount needed 12

          water pump & timming cover as a combo-set
          3/8"{16}x5" amount needed 4
          3/8"{16}x3 3/4" amount needed 3
          3/8"{16}x1" amount needed 3
          3/8"{16}x2" amount needed 1

          distibuter hold down
          5/16{18}x 3/4" amount needed 1

          Don't forget the washers to go with the bolts.
           
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          • Dana67Dart

            Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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            Is that cast iron WP or aluminum WP?
             
          • CRUZE 418

            CRUZE 418 FABO Gold Member FABO Gold Member

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            Aluminum
             
          • V8 Sam

            V8 Sam Well-Known Member

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            Thanks for all the input peeps!

            Working the next few weekends so will have to remain as it is for now

            Let you know what I find and decide to do in the end
             
          • Dusterguy

            Dusterguy Well-Known Member

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            Last edited: Oct 24, 2020
          • V8 Sam

            V8 Sam Well-Known Member

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            Did they differ pre 70?
             
          • 66fyssh

            66fyssh Don't Stop Believin' FABO Gold Member

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            • CRUZE 418

              CRUZE 418 FABO Gold Member FABO Gold Member

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              Note that your water pump and the one pictured in post #36. are different. Post #36 is a pre '70 cast iron pump, yours is a post '70 and up aluminum pump. The inlets from the radiator are on opposite sides.
               
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              • V8 Sam

                V8 Sam Well-Known Member

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                Yeah has an extra hole.for alt bracket too in that pic
                 
              • AJ/FormS

                AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s

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                img_20201020_173526-jpg.jpg

                EACH of those bolts is location specific.
                If you stick a too long bolt into the DRIVER'S side,
                it is possible to drive it right into the cylinder and crack it,
                And then you are in big trouble.

                The coat-hanger in the hole will tell you where the cylinder is, and so, DO NOT install a bolt that long!

                I respectfully suggest you take that timing cover off, and clean those tunnels out, and chase the threads in the block. Then you will likely notice that the gasket is shot, or perhaps the cover is rotted.In either case coolant could get into the oilpan, yours wouldn't be the first one to have this happen. And you might also find that the timing chain is ready for replacement.

                With the cover off, and laying on a flat surface,
                you can mock it up and determine exactly which bolt goes where.

                Some guys are afraid to take the timing cover off, because it is tricky to reinstall. but IMO, your first time having sex was way trickier. Well, OK, my first time was,lol.
                 
                Last edited: Oct 24, 2020
              • bbab3

                bbab3 Well-Known Member

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                Dusterguy thanks for posting the ad from parts mix.
                The list from Moparts just did not seem right.
                 
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                • RedFish

                  RedFish Well-Known Member

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                  The red paint had me fouled up. I thought I was looking at a early 273 or 318 like mine with cast iron water pump.
                   
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