Diy - Magnum Swap!!

How to MAGNUM SWAP your MOPAR!!
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  1. gwmax65

    gwmax65 Magnum V8 Mopar

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    gwmax65 submitted a new Article:

    DIY - MAGNUM SWAP!!

    Read more about this article here...
     
    Last edited by a moderator: Oct 20, 2016
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    • stebbsi

      stebbsi New Member

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      Did you swap cams?
       
    • gwmax65

      gwmax65 Magnum V8 Mopar

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      I haven't, thinking of swapping in a Hughes whiplash camshaft later on.
       
    • gwmax65

      gwmax65 Magnum V8 Mopar

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      Something I forgot to note on the mechanical fuel pump subject

      There's a site suggested on magnumswaps website that sells an eccentric to bolt to your cam shaft if you choose to go V belt style & want a mechanical fuel pump. On my 2nd Magnum swap I thought about this and did quite a bit of research only to find most people saying the aftermarket made eccentric was engineered poorly or simply doesn't work, some saying it works for them, so I just got a block off plate from JEGS since my 2nd magnum swap was converted to a V belt style pulley system and got another low psi Holley electric fuel pump. Electric fuel pumps are very good to help stop potential vapor locking, and really help keep your engine running while going up a hill to keep the fuel bowl filled & not stall.
       
      Last edited: Sep 25, 2016
    • jaywalkker

      jaywalkker Member

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      This is exactly what I want for my 72 demon, thanks so much for the write up!

      So, the only real "performance" mods it seems were the intake and carburetor, MSD ignition, and the HEI profile you selected?
      Can you say how much a difference a mostly stock 360 did for overall power vs the /6?
      Also, what kinda mileage do you get keeping your foot out of it?

      Thx again, awesome writeup.
       
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      • gwmax65

        gwmax65 Magnum V8 Mopar

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        Yes those are the main performance mods I did to this 318 Magnum, it gets up and goes in a hurry, plenty of G forces with this stout little engine. MSD spark plug wires are what I'm using and the HEI module is built inside the all-in-one distributor, creates a hotter spark, better on mpg's and saves tons of money vs going for an MSD box which is more for high end performance applications, especially for people that drag race. I'm not really sure how to reply to the 360 compared to slant six question since I've never drove an A body with a 360, currently doing a 360 Magnum swap in my slant six '65 blue Barracuda and I would expect it to make a DRAMATIC difference in power, even the 318 Magnum has gobs of power over any stock slant six. These Magnum engine's are designed to operate with today's gasoline, they can get very decent gas mileage, especially out of a 318 Magnum. This 318 Magnum got 21mpg highway, and that included some lead footing around, probably could get as high as 25mpg, for the 360 Magnum I would expect between 18-22mpg highway, not sure around city, just depends how you have everything tuned, driving conditions, and how your foot feels. Happy to help! Been meaning to type this up for a while now, finally got around to doing it, now I don't have to repeat myself on facebook in all the Mopar groups I'm in for people interested in Magnum Swapping.
         
        Last edited: Sep 22, 2016
      • diymirage

        diymirage HP@idle > hondaHP@redline FABO Gold Member

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        but that style aircleaner you're using is a great first step ;)
         
      • Shainesboostin

        Shainesboostin Well-Known Member

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        AWESOME MAN!!! I needed this, think ive talked to you on FB before. Im balls deep in mine as we speak. Just bought all my gaskets, timing chain, ect. Hoping to get it going in the next week or two. Lots of little things i didnt think of.

        Thanks for this thread bro!
         
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        • gwmax65

          gwmax65 Magnum V8 Mopar

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          If you came here to just bash on my edelbrock triangular air cleaner, please leave, I've have had many back fires with different motors with this same type of air cleaner, not once has it caught on fire. Even if it did catch on fire there's this thing they call a FIREWALL.
           
          Last edited: Sep 22, 2016
        • gwmax65

          gwmax65 Magnum V8 Mopar

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          You're welcome! Happy I could help out! :)
           
        • diymirage

          diymirage HP@idle > hondaHP@redline FABO Gold Member

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          I actually came on here because I didn't remember doing a magnum swap and the title made it look like i had something to do with it ;)
          then when I saw you were using that piece of kindling for an airfliter, I figured I would give you a heads up
          but, if your fine with an engine fire, as long as it doesn't spread passed the firewall, that's fine by me
           
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          • Shainesboostin

            Shainesboostin Well-Known Member

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            You didnt use the intake manifold gaskets on the front and back off the block? I bought a set, but see some people say just use RTV at front and rear. Seems sketchy to me. Love the air cleaner btw. Seriously.
             
          • Shainesboostin

            Shainesboostin Well-Known Member

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            Covering some good stuff! Lots of the little details are tough. (Kickdown linkage has almost killed me).
             
          • Shainesboostin

            Shainesboostin Well-Known Member

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            Also, did your pan and gasket look like this?

            Dosent look like itll seal. The pan ridge comes UP.

            Pan 2.jpg

            Pan 3.jpg

            Pan.jpg
             
          • gwmax65

            gwmax65 Magnum V8 Mopar

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            (Covering this again for other people even though we talked about it on FB)

            I've done 2 of these Magnum swaps now and have used the 1 piece oil pan seal with no problems + no trimming of any sorts on any gaskets/seals on both of my Magnum swaps, serpentine or V belt. Come to think of it I do believe having somewhat of the same problem you're having, but then found out it fixes itself perfectly in place by stretching as you begin to bolt it to the motor. Maybe they make 2 different one piece seals, maybe it's something to do with your oil pan, or maybe as I said it just needs a little help by being bolted on/having it stretch. Remember to use RTV in the corners of the front and rear main bearing caps after you've figured out if that seal will work for you.

            Thanks! I love these air cleaners to death as well. Yes I'm trying to be very particulate and get every detail I possibly can on here for future reference + to help others :). Finishing my 2nd Magnum swap and did the same as before with the RTV on the front & rear of the intake, absolutely no leaks. You can use those gaskets if you want but I'm just going off of what I've found out and know that works. I'm also constantly updating & editing this thread so give it a refresh every now and again, hope that seal works out on your oil pan!
             
          • Shainesboostin

            Shainesboostin Well-Known Member

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            BUMP. Just because I read threw this whole thing again. Keep finding valuable info. *Knuckes bro
             
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            • Scottd9990

              Scottd9990 Well-Known Member

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              My new Magnum 360 is installed and breaking in nicely

              IMG_0373.JPG

              IMG_0397.JPG

              IMG_0403.JPG
               
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              • gwmax65

                gwmax65 Magnum V8 Mopar

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              • Scottd9990

                Scottd9990 Well-Known Member

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                Today we made it Bad Ass! I Give You
                Dart Vader!!!

                IMG_0426.JPG
                 
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                • blk00rt

                  blk00rt Well-Known Member

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                  I like the paint job. When you installed the magnum did you chains or just the plate that mounts to the top of the intake manifold. I am always cautious about using one of those to support the weight of the motor.
                   
                • Scottd9990

                  Scottd9990 Well-Known Member

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                  I am not sure I understand your question? I used stock motor mounts, mine had la340 before.

                  IMG_0397.JPG
                   
                • Scottd9990

                  Scottd9990 Well-Known Member

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                  I think I get it now. You mean when installing the motor?? I used chain from front head bolt to opposite rear head bolts. Use the bolts that mount power steering and rear ground strap locations.
                   
                  Last edited: Oct 30, 2016
                • Jeremy Sjogren

                  Jeremy Sjogren New Member

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                  how much horsepower did the 318 magnum make? (gwmax65) version
                   
                • gwmax65

                  gwmax65 Magnum V8 Mopar

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                  According to Allpar.com they make 220 HP @4400 and 295 Torque @3200

                  I'm inclined to believe that they make way more power than what they say, it HAULS!
                   
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                  • Purcell69

                    Purcell69 New Member

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                    I latched on to this forum after seeing a Facebook post about Magnum swaps. I'm blending a few vehicles together to make something I enjoy driving and I need some help sorting out the "must haves" for the factory fuel injection.

                    I have a 1957 Chevrolet truck that I have mounted on a modified 1994 Dodge Ram 1500 4wd chassis. I wanted the better riding suspension offered by the Dodge components with modern upgrades like power steering and disc brakes. To keep things "simple" , I kept all the Dodge running gear instead of using common Chevy parts. The donor Ram had a 5.9 Magnum with an automatic transmission. The motor had been overheated by the previous owner and was partially disassembled, meaning none of the engine harness components were connected.

                    I have the factory service manual for 1994, so I can sort out what connector goes where, I just need to sort down what circuits are required for the engine and transmission. I have a Ron Francis wire works harness to handle the rest of the chassis.

                    image.jpeg

                    I don't want to take the easy way out and run GM running gear.

                    I know the MOPAR guys are out there and someone has had to have sorted out the MPFI for the Magnum in other vehicles, like 'A' bodies. Truth be known, I'm a MOPAR guy from way back.

                    Anyway, any help is appreciated. I want to have this truck moving under its own power on fuel injection in 2017.

                    No hijack intended.

                    -Joe
                     
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