68 Cuda 383 vs a 360

Big Block A body Tech

  1. fishmens67

    fishmens67 FABO Gold Member FABO Gold Member

    Messages:
    11,299
    Likes Received:
    11210
    Joined:
    Nov 10, 2012
    Location:
    idaho
    Local Time:
    5:18 AM
    If I was 18 again and looking for engine swap for my 67, I 'd be doing a modern Hemi swap.
    I'd probably do it now if I didn't have a bunch of OLD engines and transmissions laying around.
    Period correct ? well that doesn't include a 360 pre 71. lol
     
    • Like Like x 1
    • Agree Agree x 1
    • mcodecuda

      mcodecuda Senior Member

      Messages:
      798
      Likes Received:
      352
      Joined:
      Sep 17, 2007
      Location:
      Sherrills Ford NC
      Local Time:
      6:18 AM
      I always removed and installed my 440 in my 69 cuda with the engine and transmission together. Heck even did it without removing the hood. My car was an original M code car so the engine size wasn’t an option for me but at the time I also had a 69 340 Survivor. If I was building a car from scratch I’d go with a 360 with big valve 340 heads. I had a stock 79 Little Red Express with this combo and it was quick.
       
      • Like Like x 2
      • mygasser

        mygasser FABO Gold Member FABO Gold Member

        Messages:
        1,335
        Likes Received:
        950
        Joined:
        Aug 17, 2010
        Location:
        faversham, kent. united kingdom
        Local Time:
        5:18 AM
        yep i pulled the 383/727 from my 68 valiant with the hood still on, came right out no problem.
         
        • Like Like x 2
        • RustyRatRod

          RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

          Messages:
          81,267
          Likes Received:
          60775
          Joined:
          Jun 7, 2010
          Location:
          Georgia
          Local Time:
          6:18 AM
          How much grass can 23 cubes cut? A pissload. How fast would a 23 cube go cart be? Fast enough you wouldn't want none.

          I say big block hands down. There was a reason big block A bodies were feared. To me, mild driver sets the decision in motion. You could build a blueprinted STONE STOCK 383 HP engine and set the world on fire with that thing.
           
          • Agree Agree x 4
          • Like Like x 1
          • rumblefish360

            rumblefish360 I have escaped the evil Empire State! FABO Gold Member

            Messages:
            42,214
            Likes Received:
            14385
            Joined:
            Jun 21, 2005
            Location:
            Florida
            Local Time:
            6:18 AM
            It’s a darn shame the planets didn’t line up for the 360-4 back in the day. I do feel that a good 10-1 ratio 360 with all the good 340 parts would be an excellent runner. I had a ‘79 Cordoba. Everything except the 4bbl. Moonroof and tow package. What an excellent car. (Once I did away with the Leanburn that is….

            I’m just answering the guys question. Nothing more or less. If he wants to go faster later, GREAT!
            We will all be here!

            No matter which engine family he decides on, the high compression stock factory HP offerings are a great platform to start with and jump from. Even if the off year blocks are the starting point, AKA, LA 360 or the 400B, give it a good piston and compression ratio so you can copy the factory’s offerings. Plus his headers…. Yea! It’ll be a good every day driver.

            Im sure you have a few good B/RB tips!
             
            • Like Like x 1
            • stroked340

              stroked340 FABO Gold Member FABO Gold Member

              Messages:
              4,552
              Likes Received:
              1608
              Joined:
              Jun 14, 2014
              Location:
              mass.
              Local Time:
              6:18 AM
              Small block all day long:thumbsup::thumbsup::thumbsup:
               
              • Agree Agree x 1
              • mopowers

                mopowers Well-Known Member

                Messages:
                6,190
                Likes Received:
                3417
                Joined:
                Feb 15, 2006
                Location:
                West Sacramento, CA
                Local Time:
                3:18 AM
                Everyone and their mom has a small block A-body. Dare to be different. Go big block!
                 
                • Like Like x 4
                • Agree Agree x 1
                • Disagree Disagree x 1
                • AJ/FormS

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

                  Messages:
                  22,043
                  Likes Received:
                  9218
                  Joined:
                  Jan 19, 2014
                  Location:
                  South-Central Manitoba,Canada, 900ftelevation
                  Local Time:
                  5:18 AM
                  My combo; 367/ @11/1/ alloy heads/ small cam/ 4-speed/3.55s @3650 pounds with me in it.
                  She will annihilate any size street tires that you can fit into the stock tubs, thru two gears for sure, and mine will go well into Third. Sliding around turns is a blast.

                  Never had a 383, but in 1970, My 340 Swinger annihilated them as installed in Bs; both engines stock. Just two caveats;1) never start from a dead stop, the Swinger just boiled the hides. and 2) shut down at the top of third gear . With 3.55s the 340 ran out of steam at 85/90 mph, and when going into 4th, it was all done. Mine only managed
                  98mph on those E70-14s. @3330 pounds/me in it..

                  So I vote 360, cuz outfitted as above, she goes 93 in the Eighth, still with 3.55s, after all these years ................ And besides, the hi-compression 360 can make phenomenal fuel mileage, and mine has always run on 87E10 since 1999
                  383s have shortest stroke of all Mopars. They are built to rev. Cam it up and run the gears and fine, have a blast. But with the cost of gas rising weekly, the handwriting is on the wall.
                   
                • rumblefish360

                  rumblefish360 I have escaped the evil Empire State! FABO Gold Member

                  Messages:
                  42,214
                  Likes Received:
                  14385
                  Joined:
                  Jun 21, 2005
                  Location:
                  Florida
                  Local Time:
                  6:18 AM
                  No, 273,318 & 340’s have a 3.31 vs the 3.38.
                  Anybody know first gen HEMI engines much?
                   
                • RustyRatRod

                  RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

                  Messages:
                  81,267
                  Likes Received:
                  60775
                  Joined:
                  Jun 7, 2010
                  Location:
                  Georgia
                  Local Time:
                  6:18 AM
                  Well......it's 3.375, but whose countin? LOL
                   
                  • Like Like x 2
                  • fishmens67

                    fishmens67 FABO Gold Member FABO Gold Member

                    Messages:
                    11,299
                    Likes Received:
                    11210
                    Joined:
                    Nov 10, 2012
                    Location:
                    idaho
                    Local Time:
                    5:18 AM
                    I don't think I ever raced your 367 with my old taxi cab 383. lol
                    don't you think it's time to fresh'n up that 367, if it's done what you say since nineteen hundred and ninety nine it's got to be getting a little tired.
                    PS. had a stock 68 383 Magnum with Hooker fenderwells and 4.56 gears in my 67 fastback in nineteen hundred and seventy nine. where were you.
                     
                    • Like Like x 1
                    • 1969383S

                      1969383S FABO Gold Member FABO Gold Member

                      Messages:
                      6,741
                      Likes Received:
                      3740
                      Joined:
                      Jan 8, 2012
                      Local Time:
                      6:18 AM
                      As an owner of a very original 383 with all the correct parts including the suspension and all!

                      Even though I am converting to PS Over the winter!

                      My vote is SB 360 Stroker!
                       
                      • Like Like x 1
                      • Bewy

                        Bewy Well-Known Member

                        Messages:
                        1,499
                        Likes Received:
                        957
                        Joined:
                        Jan 1, 2021
                        Location:
                        Australia
                        Local Time:
                        10:18 PM
                        I would run the 360, it has a shorter rod/stroke ratio, important for a mild driver.
                         
                      • dartcuda1

                        dartcuda1 67 Barracuda 500ci 6sp

                        Messages:
                        1,686
                        Likes Received:
                        121
                        Joined:
                        Dec 2, 2008
                        Location:
                        Malvern Pa
                        Local Time:
                        6:18 AM
                        Go big block and never look back
                         
                        • Like Like x 5
                        • Mopar44134

                          Mopar44134 Well-Known Member

                          Messages:
                          483
                          Likes Received:
                          398
                          Joined:
                          Jul 20, 2011
                          Location:
                          Ohio
                          Local Time:
                          6:18 AM
                          Has anyone ever done a poll on this?

                          Big Block A body sound impressive. Looks impressive. I sold my Big block parts, didnt want to deal with the space issues and suspension.
                           
                        • matthon

                          matthon Well-Known Member

                          Messages:
                          2,546
                          Likes Received:
                          708
                          Joined:
                          Aug 29, 2008
                          Local Time:
                          6:18 AM
                          I have a 383, no space issues, header issues, spark plug issues, clutch linkage z-bar issues, cooling issues, (manual) steering issues, suspension issues, weight issues, over/understeer issues, mental issues (that I'm aware of), or drivability issues.
                          I spent as little as possible, the aluminum heads being the biggest spend, and it surpassed my expectations by a long shot.

                          I'm sure a small block Mopar is a blast as well. A hundred years ago I bought a 350/300hp right from GM, the highest performance sb at the time, and with a 4 speed and a posi in my 57 chebby it was the burnout king.

                          So, I'm sure that didn't help at all.
                           
                          • Agree Agree x 1
                          • clementine

                            clementine Flight risk FABO Gold Member

                            Messages:
                            1,984
                            Likes Received:
                            1425
                            Joined:
                            Jan 3, 2016
                            Location:
                            Emerald city
                            Local Time:
                            3:18 AM
                            man I cant wait to get my junk runnin....
                             
                            • Like Like x 1
                            • oldmopardude

                              oldmopardude Well-Known Member

                              Messages:
                              966
                              Likes Received:
                              318
                              Joined:
                              Jan 31, 2011
                              Location:
                              omaha nebraska
                              Local Time:
                              5:18 AM
                              I am old school, I have a 69 383 Cuda, a 68 GTS 383, and a 69 Dart GTS 340. And Whatever it was Originally, it gets. But being old, I don't put cast crank 360's in anything if the car never came with it. 360,400, or 440.But I don't race any more. However, If I did want to put another 60's A body together, it would be a hopped up 318 or 340 only. If that isn't fast enough, oh well.
                              and I hate seeing 350 chevys in old mopar Hotrods. When I see them, I walk away.Lol

                              20210326_123101.jpg

                              68 GTS 002.JPG
                               
                              • Like Like x 4
                              • Agree Agree x 3
                              • Jeremiah

                                Jeremiah Well-Known Member

                                Messages:
                                230
                                Likes Received:
                                220
                                Joined:
                                Oct 2, 2013
                                Location:
                                Rogue River, OR
                                Local Time:
                                3:18 AM
                                Big block Dart....very impractical car in almost every situation.

                                245273820_4755295684483345_1567871985773050704_n.jpg
                                 
                                • Like Like x 7
                                • oldmopardude

                                  oldmopardude Well-Known Member

                                  Messages:
                                  966
                                  Likes Received:
                                  318
                                  Joined:
                                  Jan 31, 2011
                                  Location:
                                  omaha nebraska
                                  Local Time:
                                  5:18 AM
                                  yes a bit heavy, but quite an unusual car, and will always hold it's value. it is all about what you want out of life.
                                  When I bought my 68 GTS in 2003, I was 26 miles from home. It was a modified 383 dart, and quite frisky. My friend gave me a ride to pick it up, and as we headed back to the ranch I must have encountered 15 stoplights. But at every light, even though I tried to not squeal the tires, they chirped every time.
                                  when we got home, my buddy accused me of showing off, as the tires squealed every single time I left the light.
                                  I told him I was trying NOT to squeal the tires, but I failed every time.
                                  months later when i restored the Interior, I found a racing slip from maryland somewhere, and it was showing the car to run 12.20's at that time, around 1994.
                                  No matter what is said here, a good running 383 dart is a lot of fun!

                                  and that is the Dart in the picture. The previous owner owned the car since 1974.

                                  leaving 18 years for me!
                                   
                                  • Like Like x 4
                                  • Jeremiah

                                    Jeremiah Well-Known Member

                                    Messages:
                                    230
                                    Likes Received:
                                    220
                                    Joined:
                                    Oct 2, 2013
                                    Location:
                                    Rogue River, OR
                                    Local Time:
                                    3:18 AM
                                    Unless I make an effort my 68 will hook pretty darn good on a dry road. I think the lack of traction is typically due to tire and shock selection. Given the nature of the car it needs a sticky tire to make and retain traction. The big block dart which was clearly not a road race inspired machine... Give it four sticky tires, bigger front t bars, rear sway bar and seasoned driver the watch it run Watkins Glen or Road America no problem. Well, if ayou could keep the oiling system and brakes alive lol.

                                    As I stated above...impractical for almost everything. That is what makes a big block Dart awesome. Don't get me wrong I loved my small block valiant too. Sometimes it is more fun to choose whatever is more interesting to you versus what is most practical and cost effective.

                                    408 vs 383 I will take the 408 every time. 451 vs 408 is a different story. Stroked big block gets the nod.

                                    As far as headers it was my undersranding that b body hedmans will fit in a big block 4 speed a body with some slight modifications? If not you have the choice of manifolds and several different TTI models from shorties to step headers.

                                    Power steering is also a deciding factor. There just isn't a lot of room in that area with a big block.

                                    Aside from removing the OEM front sway bar my GTS is unrestored in the suspension area. It will be even better when I rebuild it with greasable LCA pins and QA1 strut rods. 5"+ upward front travel should do the trick.
                                     
                                    Last edited: Oct 31, 2021
                                    • Like Like x 1
                                    • Agree Agree x 1
                                    • AJ/FormS

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

                                      Messages:
                                      22,043
                                      Likes Received:
                                      9218
                                      Joined:
                                      Jan 19, 2014
                                      Location:
                                      South-Central Manitoba,Canada, 900ftelevation
                                      Local Time:
                                      5:18 AM
                                      I know yur funning me, but to be fair;

                                      3) in 79 I was 26 and married for just two years. I was riding back and forth to work, on a one year old Bike of the Year ; a GS 1000; purchased new the previous spring. On weekends I was rocking the Earth in a 74 Dart Sport 360/4-speed/ with a fresh 360 and huge Pro-Tracs. My wife was pregnant, and our first, a daughter was born the following spring.
                                      That 70 Swinger was all used up by 1975, being on it's second everything or more, (all warranties), Thanks to ma Mopar; and I sold the beat-up, worn-out, hulk, for half what I had paid for it just five years earlier.. I would meet my wife to be, just a few months later.
                                      So no, I didn't see you either, lol.
                                      2) Putting headers on a 383Magnum, makes it a totally different animal. Never mind 4.56s.
                                      1) yes. last time it got new rings was 2004 or 5

                                      Bs, as you know, are just a bit heavier than my 3200 pound Swinger, thereby, gear for gear, shrinking their power advantage, to almost nothing.

                                      In hi-school, geaduated in 1972, I knew how to pick my battles. Besides, we were all poor kids. Most of the guys had cars 10 or more years old. But I had a leg up on them, having already saved up $1200 since age 13; and in 1970 the bank was willing to lend me another $1200, based on my deposit history, and a co-signer of course. So I got a nearly new car outta that deal; with a 5/50 warranty no less. Thanks be to my Mum, who taught me the value of saving, and to my Dad for co-signing..
                                       
                                      Last edited: Oct 31, 2021
                                      • Like Like x 3
                                      • stroked340

                                        stroked340 FABO Gold Member FABO Gold Member

                                        Messages:
                                        4,552
                                        Likes Received:
                                        1608
                                        Joined:
                                        Jun 14, 2014
                                        Location:
                                        mass.
                                        Local Time:
                                        6:18 AM
                                        If its a factory big block A-body I would run it with what it came with..but,if its NOT a factory big block car..I'd run a small block all day of coarse stroked preferred!!
                                         
                                        • Agree Agree x 1
                                        • rumblefish360

                                          rumblefish360 I have escaped the evil Empire State! FABO Gold Member

                                          Messages:
                                          42,214
                                          Likes Received:
                                          14385
                                          Joined:
                                          Jun 21, 2005
                                          Location:
                                          Florida
                                          Local Time:
                                          6:18 AM
                                          Agree with the first half for sure.
                                          The second half is a give and take. Since a lot of time the car comes to me engine/drivetrain missing, I find the small block an easy to do swing in. This is mostly weight based. Having swung in both big and small blocks.

                                          But you ran right to a stroker small block.
                                          Big block fans now go… OK! I’ll stroke my 383.
                                          For 2K, 440 source kits are cheaper than small block kits and the bigger cubes and better heads lay off huge!
                                           
                                          • Like Like x 2
                                          • '68cuda416

                                            '68cuda416 FABO Gold Member FABO Gold Member

                                            Messages:
                                            913
                                            Likes Received:
                                            876
                                            Joined:
                                            Jun 28, 2014
                                            Location:
                                            kansas city
                                            Local Time:
                                            5:18 AM
                                            Spark plugs for one, lol, I have owned one big block powered Mopar and all my other stuff is small block and FML is changing plugs in a big block with headers a nightmare!!!!!!
                                             
                                          1. This site uses cookies to help personalize 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.