Anyone Transplant a 340 into Their 68-70 Runner/Charger?

1968 -1970 Mopars

  1. Dibbons

    Dibbons Well-Known Member

    Messages:
    2,215
    Likes Received:
    1365
    Joined:
    Nov 29, 2014
    Location:
    La Paz, B.C.S., Mexico
    Local Time:
    7:43 PM
    Just curious, since I am preparing a 340 for my '72 Satellite Sebring Plus.
     
  2. garrett1308

    garrett1308 Well-Known Member

    Messages:
    349
    Likes Received:
    208
    Joined:
    Aug 5, 2013
    Location:
    Texas
    Local Time:
    8:43 PM
    Motor will drop right in. Shouldn't be much to get it all to work. Youll need a small block transmission/bellhousing depending on auto/manual.
     
  3. JB400

    JB400 69 Charger

    Messages:
    3,347
    Likes Received:
    2348
    Joined:
    Feb 16, 2018
    Location:
    Left field
    Local Time:
    8:43 PM
    I'm surprised the factory didn't put them in originally.
     
    • Like Like x 1
    • WileERobby

      WileERobby Well-Known Member

      Messages:
      6,140
      Likes Received:
      7127
      Joined:
      Sep 15, 2009
      Location:
      State of insanity
      Local Time:
      9:43 PM
      The 340, and later 360, were primarily for the a body cars. Not enough oomph for the heavier b body cars during the heyday. Only until 1971 did they offer it in b body cars. During the gas crisis, we actually did replace big block with small block in a few instances.
       
    • RT6PK

      RT6PK Well-Known Member

      Messages:
      144
      Likes Received:
      322
      Joined:
      Aug 21, 2017
      Location:
      Poland, Ohio
      Local Time:
      9:43 PM
      I've got as '67 Belvedere with a 318. I am seriously comtemplating a mild 360 for it. Then there is my buddy who is trying to talk me into a stroker crank for that 360 to make a 408.
       
      • Thanks! Thanks! x 1
      • 91r/t

        91r/t FBBO Gold Member FBBO Gold Member

        Messages:
        1,413
        Likes Received:
        1523
        Joined:
        May 7, 2011
        Location:
        Buffalo, NY
        Local Time:
        8:43 PM
        STROKER!!!!! STROKER!!!!! STROKER!!!!! :thumbsup::D:D
         
      • RT6PK

        RT6PK Well-Known Member

        Messages:
        144
        Likes Received:
        322
        Joined:
        Aug 21, 2017
        Location:
        Poland, Ohio
        Local Time:
        9:43 PM
        Yeah, I know. The only thing that is holding me back is that by the time I build the motor and upgrade the transmission, rear end, exhaust, and possible the cooling, I would have a pile of money into a 318 car. You guys understand, right? Afterall I wouldn't want to be the first guy in the history of old cars ever to have more money into a car than what it was worth.
         
        • Thanks! Thanks! x 1
        • Agree Agree x 1
        • Tim Chavez

          Tim Chavez Well-Known Member

          Messages:
          428
          Likes Received:
          393
          Joined:
          Apr 3, 2017
          Location:
          Central illinois
          Local Time:
          8:43 PM
          my 71 charger has a J head 340 out of a T/A. plenty of oomph for the weekend warrior. not saying you'll take it down to the track and win every time but she certainly makes the tires bark in 3rd. it does look a little small when you pop the 6 foot long hood though haha
           
        • Tim Chavez

          Tim Chavez Well-Known Member

          Messages:
          428
          Likes Received:
          393
          Joined:
          Apr 3, 2017
          Location:
          Central illinois
          Local Time:
          8:43 PM
          there's an older pic i have on the work computer.

          20160322_175837.jpg
           
        • threewood

          threewood Well-Known Member

          Messages:
          3,771
          Likes Received:
          4192
          Joined:
          May 30, 2014
          Location:
          Yuma, AZ
          Local Time:
          6:43 PM
        • 91r/t

          91r/t FBBO Gold Member FBBO Gold Member

          Messages:
          1,413
          Likes Received:
          1523
          Joined:
          May 7, 2011
          Location:
          Buffalo, NY
          Local Time:
          8:43 PM
          This is where I say....If you have the parts (crank, rods, pistons) then use them. As soon as you have to start buying those might as well go stroker if that happens.
           
        • Photon440

          Photon440 Well-Known Member

          Messages:
          8,498
          Likes Received:
          6851
          Joined:
          Mar 14, 2012
          Location:
          Surrey, B.C. Canada
          Local Time:
          6:43 PM
          While the above is true, it's also true that you could get the dimensionally similar 318 (or even a slant six) in the '68 Charger, so slipping a 340 in would be a piece of cake. Or pie. Or perhaps strudel. But it wouldn't be a challenge.
           
          • Like Like x 1
          • WileERobby

            WileERobby Well-Known Member

            Messages:
            6,140
            Likes Received:
            7127
            Joined:
            Sep 15, 2009
            Location:
            State of insanity
            Local Time:
            9:43 PM
            The 318 was the bread and butter engine for the b bodies. But for performance, the 383 4-bbl was the starting point.
             
            • Agree Agree x 1
            • HT413

              HT413 Semi Pro Bowler

              Messages:
              5,386
              Likes Received:
              5300
              Joined:
              Jul 5, 2012
              Location:
              New Jersey
              Local Time:
              9:43 PM
              A buddy has one that easily makes more power and more torque than my 451, though mine is a fairly mild build.

              Thing is a real monster.
               
            • 6PKRTSE

              6PKRTSE Well-Known Member

              Messages:
              1,142
              Likes Received:
              1435
              Joined:
              Nov 15, 2010
              Location:
              Motor City
              Local Time:
              8:43 PM
              I used to work with a guy that had a 70' Charger with a 340 in it. Man, I wish I would have bought that car back in the 90's. Very solid car that he brought back from California with him.
               
            • 68Moparmaniac

              68Moparmaniac Well-Known Member

              Messages:
              437
              Likes Received:
              620
              Joined:
              Jan 18, 2019
              Location:
              Utah
              Local Time:
              7:43 PM
              I agree, had a X head 340 out of a 70 Challenger that I dropped into my 73 Charger after the 318 shucked the timing chain, wish I went with the 360.
               
            • skicker

              skicker Well-Known Member

              Messages:
              734
              Likes Received:
              1434
              Joined:
              Dec 15, 2011
              Location:
              Cumberland, Maryland
              Local Time:
              9:43 PM
              My 70 Satellite was born with a 318...motor was long gone when I got the car...I transplanted a stock 1970 383 in there when I built it...I should have put a 340 in...My 340 in the Dart will run all over this 383 all day long....There is no comparison...

              293.jpg
               
              • Like Like x 1
              • 68Moparmaniac

                68Moparmaniac Well-Known Member

                Messages:
                437
                Likes Received:
                620
                Joined:
                Jan 18, 2019
                Location:
                Utah
                Local Time:
                7:43 PM
                Apples to oranges brother. Stock for stock the 383 only puts out 15 horses more than the 340 but it does put out 60 more ft lbs. torque. than the 340. With that said and with the cars in stock build the Satellite weighs approx. 630 lbs. more than your Dart. No doubt your Dart will walk away from that B body... The 340 doesn't have the torque to get all that weight of the B body moving. IMO the 340 is a great high revving motor that works well in A or E body cars, not so much in a B body, I'm sure I'm preaching to the choir though...
                 
                • Agree Agree x 1
                • skicker

                  skicker Well-Known Member

                  Messages:
                  734
                  Likes Received:
                  1434
                  Joined:
                  Dec 15, 2011
                  Location:
                  Cumberland, Maryland
                  Local Time:
                  9:43 PM
                  My apple's suck...I should have gotten an orange...
                  I enjoy driving them both...I've come to the conclusion that you need a car for every occasion...
                  The green one will go 250 miles or wherever to a show and cruise around anywhere you want...
                  It probably gets 5 or 8 times more miles put on it than the Dart...
                  The Orange one will get you light to light and has more old school vibe...Ran 12.32 a couple years back with a few small issues...
                  If chit gets deep I can always go grab Dad's 416 Duster...
                  A little more attitude in a sleeper vibe...
                  Should be a solid mid 11's but haven't stress checked it yet at the track...

                  0818181850.jpg
                   
                • 68Moparmaniac

                  68Moparmaniac Well-Known Member

                  Messages:
                  437
                  Likes Received:
                  620
                  Joined:
                  Jan 18, 2019
                  Location:
                  Utah
                  Local Time:
                  7:43 PM
                  Dang low twelves with a 340 Dart all motor? Got everything workin for those kinda numbers....pilot included :)
                   
                1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
                  By continuing to use this site, you are consenting to our use of cookies.