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Old 01-22-2014, 08:48 AM   #1
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Any advantage 5.7 +trans+transfer case ?

I got a 90 yj with the mighty 2.5 and have been considering a v8 swap. Is there any advantage\disadvantage to using the dodge 5.7 Hemi 4x4 setup(eng trans and transfer case)?
The other option is 5.3/5.7 and use my NP231 buy an Ax15. Plan to do 8.8 swap with either option. Would rather keep the manual trans. What are the swap options for a gear selector on an auto trans setup?
Thanks,

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Old 01-22-2014, 03:39 PM   #2
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You should do a 360/NV4500 out of a 3/4 ton ram. Way cooler than an everybodys-done-it bowtie swap, and much easier than a complicated Hemi.

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Old 01-24-2014, 11:54 AM   #3
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I've thought about doing a Ram powertrain swap in my YJ sometime in the future. To go with a 5.7 hemi is going to be pricey and technically challenging. I think if I were to do it, I'd try to find a wrecked truck and get the thing dragged to my house so I can take the time to transfer all the critical components piece by piece.
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Old 01-25-2014, 06:11 PM   #4
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Are the Dodge motor just as easy to wire as the SBC motors? That one of my concerns.
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Old 01-25-2014, 06:32 PM   #5
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The Magnum EFI is no harder to wire than anyone else's early MPFI. If you are considering carbureted any route you take will be childs play for the wiring.
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Old 06-13-2014, 09:00 AM   #6
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Ok. I think I want to buy a Dodge Dakota pickup V8 4x4 5 speed manual. Are all of these parts comparable with my 90 YJ. I think they come with an AX 15. I assume that it's the same manual shift as my Yj not electronic 4x4 selector. Any issues that I should be looking for? I thought that getting the whole vehicle would get me all the small parts that really add up in a conversion.
Has anyone done the convert this way?
Rich
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Old 06-13-2014, 10:29 AM   #7
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IIRC the bell housing is whats different between the Dakota ax15 and the jeep ax15. But your Jeep has the ax5, unless you've swapped it out. But if your buying the whole truck it doesn't matter. On the transfer its not a big deal if its electronic shift either. You already have a transfer that in manual shift. just swap the input shafts and reuse it if you have to. Motor mounts will need to be changed, but still, not a big deal. There are a few threads on swaps using the dodge fuel injected motors, not as many as chevys but the information is out there.
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Old 06-14-2014, 07:49 PM   #8
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Thanks Kywaterman
That sounds like the ticket. Now if this darn 4cyl would stop running so nice I would have an excuse to do the swap.
Thanks for the info.
Im a waterman as well.
Be safe
Rich
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Old 06-14-2014, 08:04 PM   #9
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Oops!
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Old 06-14-2014, 08:32 PM   #10
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Quote:
Originally Posted by Wombat Ranger View Post
You should do a 360/NV4500 out of a 3/4 ton ram. Way cooler than an everybodys-done-it bowtie swap, and much easier than a complicated Hemi.
Why do all of the work for a v8 swap, and swap in a 200-240HP engine?

The "bowtie" engines produce 300hp.

Easy decision for me.
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Old 06-14-2014, 09:04 PM   #11
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Why do all of the work for a v8 swap, and swap in a 200-240HP engine?

The "bowtie" engines produce 300hp.

Easy decision for me.
The 250 horse swap is more than twice what he already has and he can upgrade to a 5.9.
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Old 06-14-2014, 09:32 PM   #12
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The 250 horse swap is more than twice what he already has and he can upgrade to a 5.9.
The 5.9 produces 240 max. The 5.2 produces like 200.
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Old 06-14-2014, 09:52 PM   #13
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The 5.9 produces 240 max. The 5.2 produces like 200.
Depends on the 5.2.

My Mother-In Laws 99 5.2 Durango is 230hp/300 Torque.
a 5.9 in a 2000 Durango 245/335.

I got a friend with a 95 GC that is totalled. if I can talk him out of it for free, I'm going to steal the motor/trans and drop it in my YJ. Sure the 5.3 is a superior motor but free can't be beat lol.
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Old 06-15-2014, 03:45 AM   #14
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Thanks Kywaterman
That sounds like the ticket. Now if this darn 4cyl would stop running so nice I would have an excuse to do the swap.
Thanks for the info.
Im a waterman as well.
Be safe
Rich
No problem man, I'll try and give advice where I can. You a fellow treatment plant operator?
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Old 06-15-2014, 06:51 PM   #15
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Nah, I spend a lot of time on the water doing everything. Love the peace and all the wildlife.
I'm trying to get a V8 in to a very weak vehicle and keep it a 5 speed manual I got a quote from Novak and it was 12k plus because i need almost everything..engine trans axles radiator etc. plus the adapters to make it all work.
I thought that buying a complete vehicle with all the big parts that I need this would keep the price down. I've done a 53 Willys frame off and all the little pieces add up. And the Willys is simple as it gets mechanically speaking.
Thanks for the info
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Old 06-15-2014, 11:28 PM   #16
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Lol yeah my name come from my job, do love being on the water fishing though. but anyways... Yeah the little stuff really adds up. Even just all the fluids from my swap was something I hadn't really thought about when I started. Take for example 2 gallons of trans fluid, 4 quarts gear lube 2 quarts power steering, a quart of brake. 5 qts motor oil, more trans fluid for transfer. thats close to or over a hundred dollars there. Then since the motors out might as well do new water pump and valve cover intake and oil pan seals, cap rotor and plug wires. the list goes on and on... its the little things where the cost is at.
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Old 06-30-2014, 02:20 AM   #17
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Originally Posted by Captainrichhill View Post
Ok. I think I want to buy a Dodge Dakota pickup V8 4x4 5 speed manual. Are all of these parts comparable with my 90 YJ. I think they come with an AX 15. I assume that it's the same manual shift as my Yj not electronic 4x4 selector. Any issues that I should be looking for? I thought that getting the whole vehicle would get me all the small parts that really add up in a conversion.
Has anyone done the convert this way?
Rich
Quote:
Originally Posted by kywaterman View Post
IIRC the bell housing is whats different between the Dakota ax15 and the jeep ax15. But your Jeep has the ax5, unless you've swapped it out. But if your buying the whole truck it doesn't matter. On the transfer its not a big deal if its electronic shift either. You already have a transfer that in manual shift. just swap the input shafts and reuse it if you have to. Motor mounts will need to be changed, but still, not a big deal. There are a few threads on swaps using the dodge fuel injected motors, not as many as chevys but the information is out there.
FYI A v8 Dakota has an NV3500, not an AX15.
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Old 06-30-2014, 02:23 AM   #18
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Why do all of the work for a v8 swap, and swap in a 200-240HP engine?

The "bowtie" engines produce 300hp.

Easy decision for me.
Because my old '95 Ram 2500 360/NV4500 had over 375k miles on the original motor, didn't burn oil, DID burn rubber on 35's with stock 3.55 gears, towed well, and had off idle torque like nobody's business. I could personally care less how much HP an engine makes at 5 grand if I am gonna put it in a Jeep.
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Old 07-03-2014, 11:11 PM   #19
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Quote:
Originally Posted by Wombat Ranger View Post
Because my old '95 Ram 2500 360/NV4500 had over 375k miles on the original motor, didn't burn oil, DID burn rubber on 35's with stock 3.55 gears, towed well, and had off idle torque like nobody's business. I could personally care less how much HP an engine makes at 5 grand if I am gonna put it in a Jeep.
Here Here, I've got an 05 Ram and an 06 Ram both with 5.7 Hemi, and a 4.7 in a 05 Ram 4X4, I can't see any time I would need the POWER that the Hemi Engine Makes in a YJ, A 360 is Overkill and will have just as good of Low End Power. Man It's All You will Ever Need in a JEEP!
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Old 07-05-2014, 08:49 AM   #20
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Thanks for the ideas. That is why I wanted to post. Another issue with the swaps is overall drivetrain length (too short driveshafts/high angles). Is the NV3500 or NV4500 any longer then the AX15? I don't want to extend the wheelbase to accommodate the swap.
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Old 07-05-2014, 06:31 PM   #21
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Yes either of those trans are longer and the 431 transfer case is longer than the 231.
IMO, it's all too long. go with the 360 if you have to have a V8, by the way Summit Racing has some good deals on 4Brl. Intakes and Distributors for small blocks 318, 340, 360s.
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Old 07-25-2014, 01:57 AM   #22
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An NV3/4500 is only 1.5" longer than an ax15. NV4500 is quite a bit taller. It is a real truck transmission. Floorboard modification might be necessary if you don't wanna use a body lift. Well worth it for the strength and granny 1st.

NV3500 is still a good tranny. Wont need floorboard mods, its pretty much the same size as an ax15.

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