1. Joel Chapman

    Joel Chapman Well-Known Member

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    Hey every one it looks like I am going to be doing a 318 to a 360 swap in my 71 Dart Swinger. I saw somewhere on here that I would need a new flex plate because of going from internally balanced engine to an external one. Is there anything else that I need to consider/buy when doing this swap?
     
  2. 70aarcuda

    70aarcuda Master Hoader of SBM FABO Gold Member

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    driver side motor mounts are different....harmonic balancer needs to be for a LA 360 externally balanced

    yes....in the rear...either the flexplate needs to be for externally balanced LA 360 or the converter needs weights on it....One or the other....
     
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    • Joel Chapman

      Joel Chapman Well-Known Member

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      Do I just need to get a new mount for the K-member and that would solve that problem?
       
    • George Jets

      George Jets 1967 Dart 2 Door FABO Gold Member

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      Ask @moparmat2000 ^^^^^
      He was just explaining this driver's side 360 to 318 k frame mount setup to another member just 15 minutes ago.

      He has great pictures to explain what you need to do.
       
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      • 70aarcuda

        70aarcuda Master Hoader of SBM FABO Gold Member

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        the bracket that bolts to the engine is not the same......they are getting hard to find and expensive....

        or you can make one ...modify the old one...
         
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        • George Jets

          George Jets 1967 Dart 2 Door FABO Gold Member

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          • moparmat2000

            moparmat2000 FABO Gold Member FABO Gold Member

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            Thanks. I'm kinda done explaining it. Pix will have to suffice.
             
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            • Joel Chapman

              Joel Chapman Well-Known Member

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              I didnt mention that the 360 I am swapping too is an LA 360 not a magnum, still the same issue with the motor mount?
               
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              • Joel Chapman

                Joel Chapman Well-Known Member

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                Ive already bookmarked that post so no need to worry bout having to explain again! I do appreciate it though!
                 
              • moparmat2000

                moparmat2000 FABO Gold Member FABO Gold Member

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                LA, or Magnum the block ears are the same for both engines
                 
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                • moparmat2000

                  moparmat2000 FABO Gold Member FABO Gold Member

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                  318 LA and 318 magnum same on drivers side
                  360 LA and 360 magnum same on drivers side

                  318/360 LA and Magnum same on passenger side.
                   
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                  • Stephen Mulkey

                    Stephen Mulkey FABO Gold Member FABO Gold Member

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                    I believe you will also need a oil pan for the 360 in the above, possibly a pickup tube.
                     
                  • cudamark

                    cudamark FABO Gold Member FABO Gold Member

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                    If you're going from a 2bbl to 4bbl, there are kickdown and throttle cable differences too.
                     
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                    • George Jets

                      George Jets 1967 Dart 2 Door FABO Gold Member

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                      Yes ^^^ and you got to have the 4bbl, that is more than half the fun opening up the secondaries on demand.

                      20180205_220055.jpg

                      360 pictured here ^^^ with the Weiand 8022 Aluminum 4 bbl Intake.

                      Edelbrock 1406 600 cfm Electric Choke is a good fit for the 318s/360s, bolt on and go.

                      The 360s just pull a little more of the same volume.

                      20200901_225731.jpg

                      Need this Edelbrock Mopar bracket to to work with the 4 barrel carb and the mopar kickdown linkage.

                      1481.jpg

                      And here is a shortcut to get a 4bbl on to your 2 bbl intake manifolds, for those that like shortcuts. Factory 2 bbl manifolds are still the Dual Plane manifolds on the 360s.

                      Run Nice

                      20200612_104857.jpg

                      Screenshot_20210403-182057_Chrome.jpg

                      Not to mention your cooling system may need a 7 blade clutch fan and shroud to help cool the more powerful 360.
                       
                      Last edited: Apr 3, 2021
                    • dICKj

                      dICKj Well-Known Member

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                      Can’t l use the oil pan, pickup from the 318 that I’m taking out?
                       
                    • moparmat2000

                      moparmat2000 FABO Gold Member FABO Gold Member

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                      No. 360 is it's own animal when it comes to oil pans. 318/340 share the same pan
                       
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                      • justinp61

                        justinp61 Well-Known Member

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                        As mentioned you'll need the 340/360 drivers site motor mount, a 360 oil pan and a 360 flex plate. A milodon flex plate would probably be the easiest route.
                         
                      • Rapid Robert

                        Rapid Robert Well-Known Member

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                        I've used the B&M 10239 flexplate for this swap (keeping the internally balanced torque converter) & it works fine. there are 2 360 "center sump" pans that I am aware of (might be others), a 392 & the sump starts 4" back from a plumb line down from the front lip of the pan & an 876 pan & that dimention is 2" & the 392 will clear the rear edge of the kmember & the 876 may likely as well but no exp with it. the 876 pan requires the bottom curved pickup & the 392 pan requires the right angle (middle) one. disregard the top pickup. when the time comes I would compare the 318 one to those shown as you might be OK as is.

                        559.jpg

                        560.jpg
                         
                      • cudamark

                        cudamark FABO Gold Member FABO Gold Member

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                        The 876 pan is from a '74-8 C-body. The 392 is the correct pan for A, B, E, and F, bodies.
                         
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