2004 Toyota Tacoma 3.4 J - Shift Transfer Case Swap.

Hello all.

I'm planning of installing a crawl box into my 2004 4x4 3.4 V6 manual Tacoma.

The transfer case i have currently is of the push button 4x4 variety. I am hoping to swap the transfer case to a J shift variety in order to omit any electrical weak points. I have already converted the ADD hubs to Manual lockout hubs.

First question.
Is this swap worth it?

Second question.
Does anybody have a complete list of the parts needed to do the swap?

Any information would be great.

Thanks again

Fox

 

Worth it if you dual lock front and rear differentials.
I'd keep the button Jshift Tcase.

And Welcome to TacomaWorld.
Again

 

I’m a little confused on what a push button j shift is?
I thought all j shift transfer cases never had a button.

 

The TC swap is easy - it’s converting the front to manual locking hubs that will nickel and dime you.

All you need to do is find a j-shift transfer case and shifter, remove your old one and then install the new one. Good to go!

 

Won’t I need the long tube off of the front differential as well?

Wouldn’t that be the only way to bypass the front differential actuator?

 

you can always do the hose clamp method on your add diff tube to keep the fork engaged.

 

I thought that trick only worked with the vacuum disconnect tubes from a j shift front differential.

 

Nope - it’ll work on any ADD differential

 

Can I do this modification and keep my current push button transfer case?

 

I think so maybe just disconnect the power to the diff actuator. not 100% sure

 

No real benefit to have the manual locking hub and J shift. Keep the ADD and push button. The manual locking hub is actually weaker btw.

 

I’ve had issues in the past not being able to engage the 4x4 on a couple trails.

Would like to make the whole system mechanical.

Also I realize that the ADD cvs are a bit stronger than lockout CVS, but I’m only pushing 285 75s.

 

Valid reason... so far, my ADD/push button been good to me but I made sure to use it a couple of times each month.

If you're going to swap, do it right. Don't bandaid the ADD tube with a hose clamp, get the actual manual tube. As far as the J case, you can use one from a 3rz if you can find one from a v6. But you'll have to swap the input from your tcase if you're using a 4cyl case, which is easy to do.

Best of luck on your endeavor

 

Yes you should be able to. All the push button does when you click it is move the ADD shift fork onto the smaller shaft in the differential to lock it in and spin it.

There’s also another actuator on the back of the trans that gets activated when you switch it into 4x4 too.

 

Does the JShift transfer case have a actuator on the back of the case like the push button transfer cases?

 

Nope

 

So to make the swap I’ll need the following.

axle tube from locking hubs differential.
and
A J shift transfer case from a manual 3.4l.

Will I have any issues with 4x4 and my antilock brake system?

I also realize that my 4x4 light will no longer work.

 

Bump

 

There's plenty info on some of these threads that will provide you with info and specific part. Use the search bar on this site, located in the upper right hand corner.

-Yes, you will need a manual tube and locking hub from a pre00.
-A j case from a v6 will be easier for you but if you can't source/locate one, you can use one from a 3rz. If you use one from a 3rz, you'll need to swap input from your existing tcase over to the 3rz case. They use different spline.
-issue with 4x4? What issue are you referring to? Climbing out of the vehicle to manually engage your hub to use 4x4 vs pushing a button from within the cab when the weather is horrible? You're converting from ADD to manual, they both have issue, which is unique to their purpose.
-antilock brakes will have nothing to do with your ADD to manual locking hub setup.

 

Nice…

Try and find a link to a decent write up on how to do this conversion and I’ll be amazed.
I’m talking part numbers, gasket numbers, expanded prints,ect.

Something other than this one
https://www.tacomaworld.com/threads...or-the-1st-gen-tacoma-3rd-gen-4runner.460180/

Not trying to start anything.
I’m just trying to learn and make my rig more reliable.