Jeep cherokee 5.9 magnum into a 72 charger

[XXSpiralXX]

  okay so I have the magnum motor out of a wrecked 98 jeep, and I want to put it in my charger. So, what I want to know before I pull the motor out, is are there any benefits to keeping the factory EFI from the truck? What do I need to keep to make it work in my car? What mods can I do with it to make more power ? Computer chip? Injectors? Whats the best bang for the buck? Bear in mind I now wont have to deal with emissions so the glvoes can come off, albeit with financial limitations. I will be rebuilding the motor as it has 250K on it. BTW, the car is an original 318 car.

[Rolling_Thunder]

you will need 340/360 engine mount brackets.

The benefit of the EFI is the fuel economy and the fact it has been cracked computer wise - making it easy to modify

[XXSpiralXX]

  So this would be a smarter move than putting a carb on instead. And what do you mean about the computer being "cracked"? I know, these seem like dumb questions. In my defense however I never really messed with a computer controlled car before. Everything before this was either stock or edelbrock carbed! ( I know, I'm behind the times ).  SO this being my first efi rodeo, where should I start?
  As far as the swap goes, do I need all the emissions stuff also or can I eliminate that junk ( like the cat, smog pump (?) ) and whatnot?

[Rolling_Thunder]

you can eliminate all the emissions stuff.   

The codes being "cracked" on the computer means that there is aftermarket support for the modification and reprogramming the computer (PCM, ECM) if you want or need better performance, change camshaft, change exhaust, etc.

I like the EFI stuff because of efficiency, part throttle response, fuel economy, and ease of useage. You get in the car, turn the key, and it will start...    run....     and keep running...         the engine already has the EFI set up on it why not give it a whirl.

The only things you would need to install the engine (assuming you go EFI and assuming you bolt it in as is with the complete wiring and PCM already done. You will need to hook up a fuel line to your fuel rail (not sure what fitting it uses offhand) and plumb your fuel line with an electric fuel pump. A fuel pressure regulator is sometimes present on the fuel rails and sometimes not - depends on your application.

I was like you recently until I started swapping a 6.1L hemi into my 68...      I now have no fear of computers, wiring, sensors, or anything else revolving around engine swaps   haha      I'll help you where I can -  just keep posting questions   

[BrianShaughnessy]

  A motor from the legendary 98 Grand Cherokee 5.9 Limited isn't a bad place to start     

    That ECM is worth a few bucks by itself.   Best factory tune mopar ever did.   

       I'd start with a decent set of headers when you drop it in and consider yanking the beer barrel intake for a mopar M1 or a Hughes EFI.   

         Not sure the extent of "financial limitations" but this swap can be done... and you'll definitely have fun.

 

       



   

[Troy]

You'll need a car oil pan (and no, the one from the 318 won't work) along with the correct motor mounts and a 5.9 specific torque converter or a B&M weighted flex plate so you don't kill your transmission. If you keep the EFI you might as well keep the serpentine belt setup as well. You'll likely need to relocate the power steering pump or it will hit the steering box in the car. I've read that the bracket from a van will work but I haven't made it that far yet. With a flat hood I'm not sure the factory "beer barrel" intake will fit. If you use the stock computer you may need it reprogrammed any way since it's expecting transmission inputs and won't run right without them. If you use a computer from a stick shift truck you'll be fine. There's probably a lot more to watch out for but I'm in a hurry and it's been posted previously.

As for mods, getting rid of the beer barrel intake is the first step. An Edelbrock RPM Air Gap is a way better intake for a car but then you need to sort out the rest of the EFI (or just slap on a carb since since you're on a budget). There are lots of good cams for a 5.9 but be warned that they are expensive since it's a roller from the factory. Some places will "regrind" your stock cam for a lot less. Headers for any small block will fit. Cam, intake, and headers are the basics for a big jump in power output. You can go farther (a stroker kit would be nice!) but it isn't really necessary for a fun street cruiser.

Troy

[Cooter]

Be fore Warned....

5.9 Magnums are balanced differently than the older 360 engines. Something bout the "Magnum" part. (I tried to run a Manual FLywheel off one of these on a 1972 360 with 4-speed and bout shook all my teeth out). Heads are different too (Valvetrain parts like Rockers)..
Roller cams, EFI, and the like are time consuming and expensive to get to the final "WOW" factor. Not worth it for a few MPGs IMO.

Better off dumping in an earlier 360, possibly with better cam, intake, and carb.

[XXSpiralXX]

  The main reason I'm looking to use this motor is the power level in the jeep. My 318 runs decent but it's still a 2 bbl you know? Also, I already own the motor and the complete truck so I don't have to hunt it down. This is one of too many projects I have at the moment and I'm looking to get something done before it gets really cold out, that way I have one down and too many to go you know?
  Thanks for the input about the balance difference. The 904 in my charger is slipping lately, should I try to locate a 4 speed auto from a dakota? What would that be a A518? 

[BrianShaughnessy]

The 904 in my charger is slipping lately, should I try to locate a 4 speed auto from a dakota? What would that be a A518?  

98 5.9 Limited GC uses a 46RE  - electronic version of a  A518 / 46RH (hydraulic control).
Most 5.2 versions used a 44RE - aka A500 / 44RH.


Making either / any of those fit into an earlier car sucks.   Floorboard and torsion bar mount cutting / welding required.   

[XXSpiralXX]

 A motor from the legendary 98 Grand Cherokee 5.9 Limited isn't a bad place to start    

   That ECM is worth a few bucks by itself.   Best factory tune mopar ever did.  

      I'd start with a decent set of headers when you drop it in and consider yanking the beer barrel intake for a mopar M1 or a Hughes EFI.    

        Not sure the extent of "financial limitations" but this swap can be done... and you'll definitely have fun.




 

     



 

would swapping the manifold be more for power or for ease of the swap? Would an edelbrock manifold fit with the right throttle body ? Going to start disassembling the cherokee tomorrow or monday.