OK, I understand! Thanks for the info!

 

It does not necessarily need to have anything in common. Can it use the 42rle tranny (that should save a couple Gs)? How much stuff has to moved? etc...

 

For it to use the 42RLE, it would have to have the bell housing pattern in common with the 3.8, which it does NOT. As I said, it has nothing in common with the 3.8. I don't know how to make it any clearer.

 

wow redneck jeep reading allot of your posts lately and you really have nothing nice to say do you

" they have nothing in common"
well nor does the hemi so whats your point. you are going to have to do a wire harness swap either way. now you could buy a harness for big bucks or you can spend some time and make your own for the 4.7

"bellhousing dosent match"
so!!! if you are going to do any v8 swap you are going to have to swap trannies

"i don't know how to make it any clearer"
well thats just ignorant of you. not everyone can be as smart as you i guess.


now to really answer the newbees question. yes it can be done. no there aren't any kits available due to the fact the "hemi" has more fans and at this time is the way the aftermarket is going. the jk is still too new to really see different swaps. lets face it no one has really looked into the deisel world yet. it took the tj comunity a few years to do what they did.

so the question is back to you. do you want to atempt a 4.7 swap and let us know how it goes.

i personelly agree with you on the power to weight ratio of the 4.7 i guess we will have to see.

 

Couldn't you use the driveline out of a V8 Dakota 4x4? That seems like it would work, you'd just have to use a different length rear DS.........

 

Man I can care less about mpg, weight, drivelines, trannys or whats in common I want more HP and a 4.7-6.1 sounds good to me any day

 

Well, Redneck lives in Georgia. That might explain it.

There are conversion kits for various Hemi's, but I haven't run across any for the 4.7. I wouldn't think there would be much of a market for it. I would guess it would be a lot more to custom-fit a 4.7 than buy an off-the-shelf package from AEV for the 5.7. Or you could go with the 6.1, 6.4, 7.0, or even 7.2 Hemi - Burnsville does them all.

The computer is rather finicky - not all 5.7 Hemi's work in the JK. My understanding is the Dodge Ram 5.7 will not work, but the Grand Cherokee and Commander 5.7's will. I would guess the 4.7 wouldn't, though I don't know for sure.

This could all change if Jeep makes it a factory option or the aftermarket decides there's enough demand.

My 2 cents.

 

I don't think they advertise it anymore but i'm pretty sure Dan at Burnsville Offroad used to offer this swap....give 'em a call they may know something

 

I had a 4.7 Dakota Quad Cab 4wd that got better gas mileage then most people are getting out of their 3.8 Wranglers. I know my Dakota was heavier than your GC and about the same as an Unlimited. Either way the point is mileage wouldn't be hurt with a 4.7 if your drove around the same speeds as the 3.8.

 

Nice? How do you know how I meant anyhting emotionally? There's no tone of voice. What's nice got to do with it anyway? The poster asked a question and I answered it.

Again, my WHOLE point. Since the HEMI has no common ground with the 3.8, then why even look at the 4.7? It would be different if the 4.7 shared a commonality with the 3.8, but it does not. Since the HEMI will get about the same mileage as the 4.7 and cost about the same AND the aftermarket supports the HEMI swap, NOT the 4.7 swap, the HEMI is the clear winner. THAT was my point.

See my above response.


No, I meant simply that...nothing smartass was implied. Nothing derrogatory or condescending was meant. I just simply do not know how to make my point any clearer, so that's what I said.


No, this does not answer the "newbees" question. Here is his original post: "Has anyone considered this?

Seems like it would the right amount of power for the 4 door. Descent mileage. Also seems like you might be able to do it a lot cheaper than a hemi - possibly use the existing tranny/radiator/etc."

I answered his question using the parameters that HE outlined. The 4.7 cannot be swapped in cheaper than a HEMI. The 4.7 gets similar, NOT better mileage than the HEMI.

My suggestion to you in the future would be to let the original poster worry about how I answer them. Seems to me that he felt what I offered was on the mark. I do humbly apologize to you though, because Lord knows, I sure didn't want to insult you while providing an answer for someone else.