AW4 Transmission Swap

['89_Wagon]

I am prepping and gathering parts to swap out the TF727 for an AW4. The plan is to keep the NP229 and column shifter.

Here's the parts list so far....

-AW4 transmission - 23 spline
-AW4 harness, attached to transmission
-Cherokee underhood main harness (Has wiring to TCU)
-TCU
-TPS sensor
-AW4 starter
-AW4 flywheel
-Spacer between NP229 and AW4
-various lines and fittings for transmission cooler
-transmission cooler

So far, I have the TCU, AW4 and both harnesses.

For the spacer, I was considering this. Is this what I need?
Advanced Adapters Part 50-8603

https://www.advanceadapters.com/products/50-8603--jeep-ax15-adapter-kit-to-dana-300/

I would appreciate any tips or advice.

[Mikel]

Is your gearing going to work well with OD?

['89_Wagon]

Is your gearing going to work well with OD?

3.31 & stock wheels and tires. According to some other threads, that should be ok, and @ 65 mph rpms will be between 1800 rpm-2100rpm.

[offthebeatenpath]

3.31 & stock wheels and tires. According to some other threads, that should be ok, and @ 65 mph rpms will be between 1800 rpm-2100rpm.

If I remember right, my '98 XJ had 3.55's with that AW4. I lost a bit of grunt when I went to 31's. That was with the 4.0 liter motor.

[Mikel]

3.31 & stock wheels and tires. According to some other threads, that should be ok, and @ 65 mph rpms will be between 1800 rpm-2100rpm.

You should be in good shape. Please keep us updated.

[yossarian19]

Pretty sure what you need is a Dana 300 clocking ring if you have passenger's drop,
flip ring if you have driver's.
I've got a flip ring I'd let go for cheap + shipping (I needed the clocking ring. Whoops)
The NP229 is standard six-bolt NV / NP mounting, right?

['89_Wagon]

Pretty sure what you need is a Dana 300 clocking ring if you have passenger's drop,
flip ring if you have driver's.
I've got a flip ring I'd let go for cheap + shipping (I needed the clocking ring. Whoops)
The NP229 is standard six-bolt NV / NP mounting, right?

The pattern is the same, but I'm getting conflicting info. I think I need the clocking ring. I think a flip ring would make my np229 a passenger drop... which I don't want. Can someone confirm that?

[pickledtoast]

I'm planning on the AW4 swap in my '90 this winter as well. I thought the NP229 bolted to the AW4 without an adapter.

['89_Wagon]

From my reading, there's a gap when you insert the shaft of about an inch. A 7/8 thick ring will work.

[pickledtoast]

Yeah i did more research after posting that. Seems a spacer is needed. Should be pretty simple to make hopefully.

I have a '95 AW4 and a '97 TCU.

[rocklaurence]

You'll need 7/8" spacer and longer mounting studs because the earlier Tcase input shaft sticks out further than the later NV231/241

['89_Wagon]

Thanks for confirming the about the spacer.

Still wondering what to do about driveshafts. How much will the rear need to be shortened? The front lengthened? Can I use the existing driveshafts?

Took out the wiring, labeled a few things, and purchased some odds and ends for the electrical. I'll do another post about the wiring.

TCM Harness
[IMG][url=https://flic.kr/p/2heBhop][/IMG]

TCM Pin
[IMG][url=https://flic.kr/p/2heCXL3][/IMG]

[IMG][url=https://flic.kr/p/2heCWrE][/IMG]

[IMG][url=https://flic.kr/p/2heCWyZ][/IMG]

Step down and TPS
[IMG][url=https://flic.kr/p/2heBaTR][/IMG]

TCM. Does anybody know what year this one is? Seems to pug in fine with a 96 harness (32 pin)
[IMG][url=https://flic.kr/p/2heDLQ4][/IMG]

[80Limited]

Do a search for my build AW4 completed on here. If you have any questions pm me.

['89_Wagon]

Bought a 7/8 flip/clocking ring off ebay. Looking at this now, I think I just need long studs to pass through the adapter which the transmission and TC will grab onto... no clocking or flipping necessary. When I drop the TC, I'll confirm, but if that's the case I think a flip or clocking ring will work.

I bought gaskets for a NP231 adapter for about $11 just to give a little extra space between the NP229 and AW4.

Ring and gaskets


Thickness with gaskets

['89_Wagon]

I made a bracket for the tps. It's different than the other setups I've seen. Ill post some picks later.

Next up is a transmission cooler. Any recommendations?