1. QuickDart360

    QuickDart360 Well-Known Member

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    89on35s I see you had the mopar 292/508 mopar cam. How did it run in your 360 before teardown? Was it dot to dot? Why not use it again?
     
  2. 70aarcuda

    70aarcuda Master Hoader of SBM FABO Gold Member

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    Read the description on the speedmaster rods carefully.....wrist pin size is ,927
     
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    • 89on35s

      89on35s Inferno Red Duster FABO Gold Member

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      I got the 508 cam in a short block I bought. I never ran it or heard it run.

      Cley
       
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      • rumblefish360

        rumblefish360 So close, yet so far away FABO Gold Member

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        Give it a generous converter and cog ratio with a good compression ratio. If your car is light enough, it’ll run mid to low 12’s.
         
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        • oldkimmer

          oldkimmer FABO Gold Member FABO Gold Member

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          Dam, I missed that. Kim
           
        • oldkimmer

          oldkimmer FABO Gold Member FABO Gold Member

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          I never di
          d like the 508/509 cams. There is lots better 1s out there now. Kim
           
        • Wyrmrider

          Wyrmrider FABO Gold Member FABO Gold Member

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          What oldkimmer said
          but if you have the 508 run it and see how it works
          do a compression check
          then you know how much to change and which way to jump
          new lifters or keep old with the matching lobe- egg cartons work marked correctly
          rock the bottoms of the lifters together to make sure they are convex
          cheers
           
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          • oldkimmer

            oldkimmer FABO Gold Member FABO Gold Member

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            What about pin size .984? 2.125 journal. PCE 274.1047. $192.22. Kim
             
          • 70aarcuda

            70aarcuda Master Hoader of SBM FABO Gold Member

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            The wrist pin on those rods are
            .927. I know I have a set. They would have taken them back if It was within a year of purchase.
             
          • oldkimmer

            oldkimmer FABO Gold Member FABO Gold Member

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            Dam, The 1129s say .927
             
          • QuickDart360

            QuickDart360 Well-Known Member

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            The 508 purple cam can be made to work well. Sure there are newer grinds with modern design. But this cam gets the job done even being an older design. But it is up to 89on35s what his needs are. Also idle will be a bit rough which many love but some don't.
             
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            • 89on35s

              89on35s Inferno Red Duster FABO Gold Member

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              I sold the 508 cam today. Likely go with a solid roller custom grind cam but I'll worry about that when I get the crank and pistons back in and can verify what my compression will be.

              Cley
               
            • 89on35s

              89on35s Inferno Red Duster FABO Gold Member

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              Merry Christmas to me from me!

              Cley 20191227_104624.jpg
               
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              • oldkimmer

                oldkimmer FABO Gold Member FABO Gold Member

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                Awesome. Now u must have all u need to get going on this build. Kim
                 
              • 89on35s

                89on35s Inferno Red Duster FABO Gold Member

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                Just need gasket kit and bearings. Then I'm ready. Going to see about balancing next week now that I have everything I need for that!

                Cley
                 
              • oldkimmer

                oldkimmer FABO Gold Member FABO Gold Member

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                Nice. U will need ur bearings for the balance job. Kim
                 
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                • 89on35s

                  89on35s Inferno Red Duster FABO Gold Member

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                  Ok. I guess that is on hold till the delivery comes in!

                  Cley
                   
                • 89on35s

                  89on35s Inferno Red Duster FABO Gold Member

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                  What all will I need to bring for balancing? I wasnt expecting to need the bearings.

                  Cley
                   
                • yellow rose

                  yellow rose Doctor of Thinkology.

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                  Crank
                  Pistons
                  Wrist pins
                  Rods
                  Rod bearings
                  Rings
                  Pin locks
                  Flywheel and clutch if you like 3 pedals
                  Flex plate if you don't like 3 pedals
                  Damper unless it's an ATI\FD\Innovaters West\Rattler style
                   
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                  • 89on35s

                    89on35s Inferno Red Duster FABO Gold Member

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                    Is there a way that I can remove the pistons from the rods at home? Can you just press them out? I should I get the balance shop to do it?

                    Cley
                     
                  • Jadaharabi

                    Jadaharabi FABO Gold Member FABO Gold Member

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                    If you don't mind destroying the Pistons you can take the pins out at home. Just have your machine shop remove them and install them.
                     
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                    • 89on35s

                      89on35s Inferno Red Duster FABO Gold Member

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                      So here is what I am ending up with. The rotating assembly is currently being balanced and I have all my parts except the Cam and Intake that are both on the way. The questions will start to fly now! First one is regarding ring gap on my KB107 pistons. How do I decide what it needs to be? I read somewhere on here that these particular pistons like a larger ring gap than some others but I cannot find the info for the life of me. Anyone have any thoughts?

                      Also, any guess what power it'll make? I know its gonna be better than what I have.

                      Cley

                      360 .030 overbore
                      Stock crank
                      Stock rods w. ARP bolts
                      HV oil pump with upgraded drive shaft
                      KB107 pistons
                      Speedmaster CNC heads
                      .027 thick Cometic head gaskets
                      Cam - Solid Flat Tappet, 230/236@.050, 264/270 adv, .453/.473 lift (1.5 rocker), 112 lsa. 108 int centerline, Lash .022/.024, Int. open @ 7 close @ 43,Exh open @ 54 close @2, 9 degree overlap @ .050. (Suggested by Oregon Cam Grinders)
                      Edelbrock Torker 2 intake
                      Holley 750 VS carb
                      Calculated 10.2 to 1 compression
                       
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                      • oldkimmer

                        oldkimmer FABO Gold Member FABO Gold Member

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                        Cley. It looks pretty good to me. Kim
                         
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                        • rumblefish360

                          rumblefish360 So close, yet so far away FABO Gold Member

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                          This will clear 400 hp.
                          Go to the K. Website and look up your piston by the numbers- KB 107 - in the search bar. You’ll find gap instructions there.
                           
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                          • roccodart440

                            roccodart440 Well-Known Member

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                            CNC heads with a .450 lift cam. That doesn't sounds good
                             
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