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Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line~Artec JK 1 TON SWAP~Advance Adapters SYE Kits

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Unread 02-09-2007, 04:04 PM   #31
northjeep
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Quote:
Originally Posted by YJ-Mike
North,

Great to hear that everything ended up working out for you. What fluid did you end up running in the 3550? I am getting to the point where I am about to start the thing up (hopefully), and I need to figure what fluids I am going to run.

Thanks
First I tried mopar "for nv3500" stuff...then I tried (get this) 10w-30 motor friggin oil for about 20 miles.....then I flushed and filled with royal purple synchromax. All of the fluid switching was to eliminate the shifting problems I was having. RP Smax is good stuff....pricey up here, but good.

Quote:
Originally Posted by tcourdin
Good write up Northjeep! I did the same swap at about the same time you did (as you know) . I havent even put 500 miles on the Jeep since the swap but I absolutely love that nice new NV3550 when I do get to drive it! If anyones going to swap out trannys its the way to go.
Thanks for the props tc.
I totally recommend the 3550 for any 6 cyl application...and some 8's.

The tranny is wonderful to work with given it's 100 lb weight and 300 lb/ft capacity.

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Last edited by northjeep; 04-30-2010 at 09:21 PM..
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Unread 02-09-2007, 04:32 PM   #32
YJ-Mike
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Several others have recommended synchromax so I guess that is the way I will go.

Thanks
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2006 TJ X (Stock - w/ Borla Cat-Back Exhaust)

Built a YJ from the ground up:

- '04 4.0L (4,000 miles), NV3550 (0 miles), NP231 w/ HD SYE (9,000 miles), 33x12.50x15 Pro-Comp AT's, HP D30/8.8 (4.56 gears), ARB Lockers front and rear w/ compressor, hard/soft tops, full/half doors.
-----> Build thread can be read here: http://www.jeepforum.com/forum/f12/yj-build-plan-259306/
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Unread 04-08-2007, 02:22 PM   #33
Morgsie
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Does anyone know if the Chevy bolt pattern NV3500 is a similar swap? Looking to swap a 305 V8 or 4.3 V6 mated with a chevy NV3500, but want to retain the Jeep's NP231. Beside the bell housing are all NV3500s the same? Or will I run into other problems using a chevy NV3500 with a Jeep NP231?

Also when buying an NV3500 does it have to be a 4x4 one? And if it's a 2WD on, will I need a new output shaft (ie: shorter)?

Last edited by Morgsie; 04-08-2007 at 02:41 PM..
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Unread 07-24-2008, 02:02 PM   #34
northjeep
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I just made all the pictures work again...
Update to the thread:
Very happy with the trans it's as tight as can be and sooooooooo strong I have beat the piss out of this thing and it just scoffs and says "awwww.....little boy got happy on the skinny pedal?!" and I say "YES! take it take it take IT!"...and it does....as it scoffs.
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Unread 04-14-2009, 07:28 AM   #35
photoboy74
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Write Up.

This is a great write up, just like Richmond88YJ's ax-15 swap. Having not done a tranny upgrade before, your attention to detail in both articles was a tremendous help. I was going to do an AX-15 first, but the NV dropped in my lap with a great deal.

I'm in the process of doing the NV3550 swap with my 88, and took a slightly different approach.

First, I purchased the NV3550, NP231, rear driveshaft and slave cylinder used from a 2001 TJ. I couldn't use the master cylinder since the brake booster on the 88 is in the way to fit the longer one.

Afterwords, a quick call to Advance Adapters and talking to a great team there, I ordered the following parts to complete the transition.
  1. 716130TJH - Slave cylinder hose kit with the fitting to connect to the 88 master cylinder.
  2. 716164 - pilot bushing to make room for the NV3550.
  3. 715515 - shifter bracket to reuse my t-case shifter from the old NP231.
  4. 716007 - Crossmember mount kit to reuse the muffler mount.

All I needed to do was swap out the speedo gear and connector on the newer NP231 since the 88 doesn't use the electronic speedo. This saved me a lot of time from changing the input shaft on the old t-case.

One weekend later, and the Jeep is shifting great. Now I just need to get rid of the old tranny and t-case!
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Unread 04-19-2009, 03:24 PM   #36
photoboy74
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Pilot Bearing

So is there a better way to get the pilot bearing out without having to buy the Harbor Freight tool? I rented a pilot bearing puller from Autozone, but it is too big to fit in the I/D of the old bearing.

I tried greasing the back end, but had no luck. Of course I was told later that this method doesn't work on bearings, just pilot bushings.

So I'm toying with the idea behind using a hack saw, but I'm wondering how effective it would be with only being able to saw an inch, if the blade will even fit.
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Unread 04-19-2009, 03:45 PM   #37
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Added to the FAQ, very nice write up man.
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Unread 05-05-2009, 04:54 PM   #38
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Quote:
Originally Posted by rustywrangler View Post
Added to the FAQ, very nice write up man.
Thanks rusty!
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Unread 05-08-2010, 09:24 PM   #39
MosesYJ
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hey im getting ready to do this exact same swap into an 87 yj, i need to know EVERYTHING it takes to do the swap, i.e. pilot bearing?, internal slave to external slave? bell housing? any thing else
thanks for all the help,wonderful writeup by the way
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Unread 05-08-2010, 09:51 PM   #40
moonshinefuel
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Holy Moses! Almost exactly a year after northjeeps last post, this great transmission faq is revived, and bumped to the top again. Of course you know anything with an NV3550 gets immidiate attention.
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Unread 05-09-2010, 10:16 AM   #41
northjeep
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Quote:
Originally Posted by MosesYJ View Post
hey im getting ready to do this exact same swap into an 87 yj, i need to know EVERYTHING it takes to do the swap, i.e. pilot bearing?, internal slave to external slave? bell housing? any thing else
thanks for all the help,wonderful writeup by the way
A complete list with part numbers...AND EVERYTHING.
Well I suppose I never included that in my build info.

'92-'99 AX15 and NVG3550: OEM pilot bearing 53009180AB for '87-'91 engine

Advance Adapters Bell housing kit incl release lever, throwout bearing and pilot bearing p/n 712590

(P/N 715545) NV3550 Shifter Bracket (for Jeep NP231 transfer cases)

23 spline transfer case input conversion


(P/N 716007) NV3550 Crossmember Mount Kit (for Jeep YJ Wranglers)

(P/N 716340) Jeep Slave Cylinder Kit For NV3550

Clutch components: Your stock pressure plate and clutch disc will work. Now is a good time to replace them unless they are known to be good.
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Unread 08-07-2010, 05:49 PM   #42
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do you think the 3550 can handle a stock 5.3 ls? if not the 4.8? is there any real difference in 10-20 ft-lbs?
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Unread 04-22-2011, 10:48 AM   #43
northjeep
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Having put some hard miles on this trans I can say it will stand up to slot of power and torque. It would probably hold back a big block if you didn't flog it too hard.
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Unread 04-22-2011, 11:31 AM   #44
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Just a fyi your tranny is not new it is rebuilt. I was going to buy one from High Impact a few years ago myself. Call them and ask if you feel I am incorrect. The only reason I did not end up buying from them is I found a nv3550 with 20k miles that was swapped out for a new tranny motor combo for $400.00.
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Unread 12-10-2011, 04:41 PM   #45
argo77
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Hey man, when you installed NV3550 into 6cyl engine, did you have to buy slave cylinder, pilot bushing, and clutch plate for that tranny? Did you have to switch the flywheel? Thanks for your help.
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87 88 89 yj wrangler , nv3550 , part numbers , peugeot ba10/5 , transmission swap

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