And so it starts... 340 build

Discussion in 'Small Block Mopar Engine' started by rumblefish360, Aug 22, 2018.

  1. rumblefish360

    rumblefish360 so close yet so far away

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    Well, I’d thought I’d post up a thread on some garbage I have. This is an engine refreshing. Hone the cylinders and reinstall the slugs it cams with and I was lucky enough to not need to rebore the engines cylinders. Dated 9-30-71.
    This is a no rush build that will be finished when it is finished.
    33C09BF3-45CD-4F59-B9D3-0245FA10B8F2.jpeg

    Now, not having started at this level of a entirely bare block, where do these go? Side of the block IIRC. Normally this is a small potato job along with freeze/frost plugs I have the machinist do for a small fee which accelerated the home build.
    020D5B6F-0DD0-4899-B864-64083C03B06D.jpeg

    Plenty of material. I’m sure I’ll have extras....
    CCB59AF6-D3A5-4B5C-90AC-53C7CA9DA97D.jpeg
     
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    • rumblefish360

      rumblefish360 so close yet so far away

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      4.06 bore.
      image.jpg
       
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      • rumblefish360

        rumblefish360 so close yet so far away

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        Here is a handy tip for you new guys diving into an engine build. Cut a small circle in the bag as to slip over the shaft. This helps cover the engine entirely.
        Low chance of water or humidity getting in now!
        image.jpg
         
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        • Bobzilla

          Bobzilla Well-Known Member

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          The two small plugs in second photo go into the coolant drain holes. One each side, under the core plugs, as you mentioned.
           
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          • rumblefish360

            rumblefish360 so close yet so far away

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            A nice coating of Indian Head gasket shellac ...

            image.jpg

            And my two favorite tools to install them, lightly countersunk.
            image.jpg
             
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            • rumblefish360

              rumblefish360 so close yet so far away

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              And another handy tip for you novice engine builders.
              This is a “sacrificial” 6 inch 3/8 drive extension. It is a good fit for the plugs at the front of the block. A little more Indian head gasket and drive them in a bit. They should be counter sunk.
              There is also a trick mod to be done here later. A small drill hole on the driver side plug to spray some oil onto the timing chain for that little extra oil insurance that can only help during high rpm runs. A drilled a 3/32 hole in the plug. I think that was a bit big when I was done. Installed now. Coffee break.... LOL
              (Not that this engine will, maybe, I think. OH! I don’t know....)

              image.jpg
               
              Last edited: Aug 22, 2018
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              • Wyrmrider

                Wyrmrider Well-Known Member

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                drill a hole in both plugs- for oil as you say but also to bled any trapped air/ air bubbles
                some motors you can drill a hole to squirt at the leading edge of the cam/ dist gear
                you can drill through the thrust into the main oil galley .040 through the cast iron .060 through the thrust
                Engine Builder mag that showed up online today mentions chamfering the parting line of the thrust (main) toward the rear- been doing that for 40 years
                 
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                • rumblefish360

                  rumblefish360 so close yet so far away

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                  Getting set to drop in the crank.
                  image.jpg
                   
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                  • 72Dart6pack

                    72Dart6pack Harder Better Faster Stronger.

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                    You're not putting brass plugs in? Do you have a reason?
                     
                  • rumblefish360

                    rumblefish360 so close yet so far away

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                    Sorry, come again.

                    The distributor gear oil mod will not be done. Broken equipment limitations. Also, there is no need for this mod at this time on this engine. It will not be that radical at all.
                     
                  • rumblefish360

                    rumblefish360 so close yet so far away

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                    Why do you ask?
                    Will they not both do the job?
                    Please don’t come back with longevity reasons. While true, you really have something better to do besides split hairs with stupid comments don’t you?
                    :lol:
                     
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                    • 72Dart6pack

                      72Dart6pack Harder Better Faster Stronger.

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                      Just asking. :)
                       
                    • rumblefish360

                      rumblefish360 so close yet so far away

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                      LOL, of course and my bad for not answering while pulling your tail!
                      I’m making use of what is on hand sitting around collecting dust. And I have much dust to clear.


                      Plastigage time. Checking the middle.
                      All surfaces cleaned with alcohol. 10/30 oil on the bolts. Torque them down and then remove the center cap.
                      Do not rotate the crank kids. You’ll just smear the plastigage around and you’ll have to do it again.
                      image.jpg image.jpg
                       
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                      • rumblefish360

                        rumblefish360 so close yet so far away

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                        Bingo! Right where it needs to be.
                        I’ll check end play tomorrow. I’m running out of time today.
                        Dinner brake & assorted B.S. to run through.

                        image.jpg
                         
                        Last edited: Aug 22, 2018
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                        • SLOPAR72

                          SLOPAR72 Well-Known Member

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                          And I thought my shop was the only place it was ever used lol.... Good stuff....
                          I use a chemical from the plant (printing) to wipe down the areas I use this stuff and it really helps this stuff bond.

                          JW
                           
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                          • moparmandan

                            moparmandan FABO Gold Member FABO Gold Member

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                            Watching this one! Did you hone it or have the shop do it? I bought some ball hones I can't wait to try. What work did you do to the crankshaft? Going this route with my 318 to learn with junior. Not my first but been a while. Thanks!
                             
                          • rumblefish360

                            rumblefish360 so close yet so far away

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                            Thanks for tuning in Dan.
                            Have fun with your son. Mine just popped in and out on this. No real interest in it.
                            I had a race shop do the work. I dropped the crank off and said if it can be polished, please do so (as cutting is more money but if it needs it, it needs it.)
                            On the block, same deal, if you can hone it......
                            That and bearings ran about $250.
                            The slugs are old TRW’s. New moly rings from Summit racing. About a hundred bucks. Valley plugs and frost plugs were needed.
                            Total into the parts is approximately $400. Give or take. I try and not look at recipes as there depressing. And truth be told, to really don’t care.

                            I forgot to get cam bearings. And a few other small things. So, there will be a delay... LOL! But I have most everything...* I think!*
                             
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                            • moparmandan

                              moparmandan FABO Gold Member FABO Gold Member

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                              Awesome. That's exactly the route we want to take with the machine shop. Good luck with your build!
                               
                            • Wyrmrider

                              Wyrmrider Well-Known Member

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                              Last edited: Aug 22, 2018
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                              • Mopar Sam

                                Mopar Sam Well-Known Member

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                                Frong ?
                                 
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                                • Kllrbee

                                  Kllrbee Well-Known Member

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                                  Nice thread...will follow this one for sure.
                                  Im pretty new here. Cut my teeth on B bodies and BBs, but Im with you completely on the receipts. Ive sold a few cars and when the buyers asked if I had any receipts, I always just replied with "I dont want to know how much Ive spent". Truth.
                                   
                                • gdrill

                                  gdrill OK, now what??? Staff Member FABO Gold Member

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                                  I'm tuning in. A small block aficionado is at work here. Looks like time to listen and learn.
                                   
                                • rumblefish360

                                  rumblefish360 so close yet so far away

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                                • dartfreak75

                                  dartfreak75 Well-Known Member

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                                  Following.
                                   
                                • '73red-duster

                                  '73red-duster FABO Gold Member FABO Gold Member

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                                  But we know it will be done right. Ready to watch a master at work.