4.7l Grand Cherokee engine in a J truck

[2003 mcs]

I may be able to get one for a reasonable price. What are the downsides? What are my transmission choices? Am I limited to certain transfer cases (new to this truck thing, be easy on me). Axles Dana 60 front, rear (probably) Dana 60 as well. Its decision time now. Thanks

[Chevelleguy]

Downside- Way too much effort and time.
You will have to use the factory avalible transmission and transfer case, make your own mounts, crossmember, linkage, cable brackets, ect.
It would be kinda cool though.

[ March 06, 2004, 04:48 PM: Message edited by: chevelleguy ]

[shredby4]

I think it sounds like it would be very cool. I agree with chevelleguy, it'll be a lot of effort. But then again, that's what FSJ's are. I think BJ's is offering swap kits for Dodge engines now, I may be wrong, but I am 90% sure that the 4.7 is a Dodge V-8. The kit is supposed to let yopu use the FSJ's original tranny.

Only you can decide what is too much though.

[JeepsAndGuns]

Actaully I think the 4.7 was a jeep engine because it first came out in the new grand cherokees. It later cam out in the dakotas, not shure if it was ever in the fullsize ram though.
I'm not shure what the bolt pattern is but it looks rounded like the amc or dodge pattern but if I had to guess it would probably be the dodge pattern. Tranny, I dont think you will be using anything else but the one bolted to it unless you could have someone custom make a flywheel because as far as I know, they were never offered with a manual tranny. T-case, you might get lucky there, it probably has a NP round pattern t-case, in that case it might interchange to older ones (np208) But you would just have to check it and count the splines and the stickout length. Make shure you get ALL the wireing for it and the tranny if you do get it. Gonna be fun straighting all that out and blending into the J-10. Good luck and keep us posted.

[g503]

that would be a sweet conversion ,in a a fsj i have been looking at that for my cj project keep it in the family so to speak
http://www.allpar.com/mopar/47.html

[ March 06, 2004, 08:02 PM: Message edited by: g503 ]

[AMX factor]

I have thought about the 4.7l myself. I have one in my 2001 Durango and it is a good engine, lot of power for s small v8. I've always had my eye out for a totaled Durango so I could possibly pull engine, tranny, transfer case out.

[2003 mcs]

I have time, I think I will try it. My brother has a 69 Bronco with a 94 5.0 in it. It has that wow factor, plus reliable and decent mileage.....It will take time, but I'll keep you posted.

[skid2964]

Originally posted by AMX factor:
I have thought about the 4.7l myself. I have one in my 2001 Durango and it is a good engine, lot of power for s small v8. I've always had my eye out for a totaled Durango so I could possibly pull engine, tranny, transfer case out.I have that engine in my 2003 Durango, I too, was surprised at the power it had to be so small. The salesman told me it was a "318", lol, I had to correct him. most car salesmen are worthless.

That engine is definately mopar, not a Jeep engine. Mine has aluminum heads, does the older Jeep models with the 4.7 have aluminum heads?

[ March 07, 2004, 07:03 AM: Message edited by: skid2964 ]

[JeepsAndGuns]

Yea the older jeep ones have aluminum heads. I am pretty shure they are exactly the same engine.

[shredby4]

Ya know, it's possible that somewhere along the line it was offered with a manual in the Dakota or Ram. And yes, the 4.7 is offered in the Ram. I remember hearing that on Car and Driver TV. ;) I'd go to the dealership and talk to the oldest guy in the service department. Ask for the HEAD service tech. They may know if there is a manual flywheel for it...

I have seen Wranglers and TJ's on the internet with that engine and a manual tranny. Seems like I've seen a ZJ or XJ on a Jeep site with a manual behind the V-8. I know it wasn't factory.

Last but not least call Advance Adapters.

[bcgrown]

The 4.7 can be had with a manual trans, the NV 3500. For automatic, you can have any that you want as long as its a 45 or 545 RFE trans. The reason the engine seems so powerful for its size is that the auto trans gearing was designed specifically for the 4.7's power and torque curve. The auto that they use has so far been a good trans. We have had very few in my dealer that need rebuilds. They are even using it behind the Hemi in the Ram 3500, but I will wait to see how that holds up. Curie enterprises has a 4.7 with auto in their Fire ant TJ. As long as you have the wiring and computer AND a shop manual, you should be able to make it work fine. Just remember one thing about the 4.7. It does not tolerate lack of maintenance very well. If you are lazy on the oil changes, they seem to sludge up real good.

[bcgrown]

And one more thing while I'm on the topic of sludge. Before you aquire a 4.7 that is used, I would strongly recomend removing a valve cover, which is quite easy on these, and check the valvetrain for signs of sludge. When they do sludge up, this is where it will be evident. Not trying to scare you form this motor as I really like it and would put one in my jeep if I could afford to, but I just want to let you know what to look for to avoid spending on a motor that was prev neglected.

[2003 mcs]

Thanks. I will check out valvetrain.

[2003 mcs]

http://www.hescosc.com/V8Wrangler.html

http://www.jpmagazine.com/techarticles/21118/