Rear Diff and sub-frame swap - Nissan Armada Forum: Armada & Infiniti QX56 Forums
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post #1 of 5 (permalink) Old 04-30-2017, 05:36 PM Thread Starter
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Rear Diff and sub-frame swap

Good afternoon everyone, I have a 05 (pre march) qx56, it's a car form up north, and the rear end is rusted out really bad, also from the way this car was treated before me, I don't trust it's rear diff and since it's rusted its a bit more than sweet blood and tears to open it up to drain and fill the rear.

Now to the question, I went to a local part puller (self used part store) and got THE ENTIRE rear subframe including the diff, control arms(since finding LCA and UCA for rear on 05 is damn near impossible or expensive as fck, spindle and all that. HERE is where I go dumb.. I see a lot of people selling 04-06 rear diff, and 07-13 rear diff. but when you go to but the seal kit they work from 04-13.. So if i was to change the entire rear subframe can I put this diff from 08 armada to a 05 qx56? Please help any and every info is key here, I am dumb when it comes to this side of the mechanics.

INFO that I know:-
1. Subframe for 05-11 (i think) armada is same as 04-11 qx56.
2. 05 qx56 big tow(with tow package) comes with 3.357 ratio diff, the 08 i pulled is also big tow 3.357 ratio (i rear pops way of spinning the diff connect and seeing how many turns it takes for the 2 axle sides to do a full circle.(it took 3 and close to half)
3. I know i'll need to get rear rotors as they are diff from the 05(pre march)
4. MY diff status is unknown, while 08 rear diff has 60k and seems smooth.

The reason I wanna take such a biog job is because I cant get anyone to align the rear toe and camber bolts(because they are froze litterally) and I dont wanna drive on rusty parts.

I have exams for the next 3 days, so I may not be able to give a lot more info, but I will do my everything to get on and answer any more questions as needed. Thank you so very much in advance.

Last edited by Aman Lokhandwala; 04-30-2017 at 07:29 PM. Reason: add info.
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post #2 of 5 (permalink) Old 04-30-2017, 07:10 PM Thread Starter
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Pics

Posting pics of current subframe(under the car) and the subframe (with all the attachments) of 08 mada as well as the rear differential / carrier
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post #3 of 5 (permalink) Old 04-30-2017, 07:13 PM Thread Starter
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more pics

Cont. pics since there is 5 pic max restriction
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post #4 of 5 (permalink) Old 05-01-2017, 03:12 PM
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I don't think you will have any problems with the exchange. The rear rotors were the same, only the front ones were changed in 05.

2004 Armada SE, Throttle body coolant bypass, Grounding kit, modified Volant CAI with Amsoil dry element, custom engine cover, trailer brake controller, Michelin M/S2s, custom lower grill, Silver Star headlights, Bilstein HD shocks, Power Stop Drilled/Slotted Rotors, ceramic pads, Goodridge SS brake lines, interior and back-up LEDs, PLM transmission pan, trans radiator cooler by-passed, all Amsoil synthetic lubricants, Nismo headers, custom 3" SS exhaust system with high flow metallic core cats, UpRev tuner version, 318 rear wheel HP.
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post #5 of 5 (permalink) Old 05-04-2017, 08:21 PM Thread Starter
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@scr38 Thank you for your response, I sure appreciate it.

My Main question is, will the rear differential work ? mine is a 05 and the differential I want to put in is 08. both are 3.357 ratio. I really hope someone can answer, I know pops has loads of knowledge regarding diffs, I had seen him talking about swapping to a 07+ if his went out. Please help
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