The Official 3rd Gen Dual Case, Dual Locked Thread

[BrandonF]

if you have a manual trans you can get away for a little while without modifying the crossmember but you will want to build something more stout eventually if you have an automatic you will need to do a crossmember right away. Drive shafts I had rebuilt at a local drive shaft shop here in town.

What do you think of just upgrading the trans mount to the 4XInnovations heavy duty and leaving it at that?

 

[Sean K.]

LOL, I'd rather have the shafts made while I'm doing the conversion/install for less downtime (my daily)

what is the additional length of the reduction box+adapters?

Depends on which ones you go with....IIRC, just the gear driven crawl boxes are 6.5".

I didn't answer you earlier b/c I'm running passenger drop and my dual cases are both gear driven so it's not apples to apples.

I'm sure someone here already has what you're looking at and can give you better, more exact numbers.

Good luck!

 

[manesfesto]

Been looking into this for minute for my 01 SAS rig. The length and crossmember modification seems to be a pain. But, having 5.29 dual locked ARBs plus a dual case sounds like an end goal. I am still unsure on exactly what I would go for in term of ratio but would love some input.

I actually have 2 spare transfer cases in my garage at the moment so I could slowly build one up then fab shifters once I am ready.....

Prob go marlin

 

[slomatt]

How did you guys setup your shifter(s) for the stock transfer after it was moved back? Did you run it up through the cup holder? Run double shifters?

- Matt

 

[Rockdawg84]

What do you think of just upgrading the trans mount to the 4XInnovations heavy duty and leaving it at that?

I don't see any reason that wouldn't work just fine.

LOL, I'd rather have the shafts made while I'm doing the conversion/install for less downtime (my daily)

what is the additional length of the reduction box+adapters?

I don't blame you I waited until I had the box and plates built then measured them and had the front shaft lengthened and the rear shortened the same. I will measure what mine was in the morning but because different stuff may have differing dimensions I would not just go off of my measurements.

How did you guys setup your shifter(s) for the stock transfer after it was moved back? Did you run it up through the cup holder? Run double shifters?

- Matt

cup holder is one way but I used RaDesigns triple shifter. it allows you to not cut your floor up as much. Great product.
Triple stick setup by Sam Wright, on Flickr

 

[jkeith.w]

The Official 3rd Gen Dual Case, Dual Locked on 35's Thread

I will measure what mine was in the morning but because different stuff may have differing dimensions I would not just go off of my measurements.

I'm probably going TG adapters also if I do this, so your box & adapters measurement would be appropriate for my driveshaft calculations.

cup holder is one way but I used RaDesigns triple shifter. it allows you to not cut your floor up as much. Great product.

Can you explain how the levers work with that setup? Does the factory lever still have its J pattern?


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[Rockdawg84]

I'm probably going TG adapters also if I do this, so your box & adapters measurement would be appropriate for my driveshaft calculations.

Can you explain how the levers work with that setup? Does the factory lever still have its J pattern?

So the Left lever is a hi/low for the rear (stock) Case.
the center lever is a hi/low for the front reduction box.
the right lever is the 2wd/4wd lever.

if you look at the pic of the transerfcases you can see that the center shifter is simply the top shift of the reduction box. the two outer are connected to a rod that actuates a lever at the back case to operate the hi/low and the 2wd/4wd. This brings up another issue that is exclusive to the triple stick set up. you have to remove the interlock pins so that the hi/low side can function apart from the 2wd/4wd. So no j-shift with triple sticks.

 

[jkeith.w]

Ok, so just like my military truck, terrific.

Factory knob on reduction box was throwing me.


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[jkeith.w]

Also; insomnia?


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[Rockdawg84]

Ok, so just like my military truck, terrific.

Factory knob on reduction box was throwing me.


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LoL It was throwing me so I switched it to the right lever. After the pic was taken of course. :bounce:

 

[MandAtaco]

Awesome, just found this thread! I just dug out my Tacobox from under the workbench last week and started rebuilding it. I've got it all cleaned up and waiting for a bearing to come in before I put it back together. I have a short shifter for the rear case, but am going to order triple sticks from Radesigns for it. My wife hated not having that second cup holder in my Taco. Following this thread closely!

 

[Jaysen4runner]

BJust got mine, haven't have time to install yet. Maybe after the new year, Front case is MC 4.7 all 23 spline, bolt back to my h-n-l rear mult-mode case. Future plan is to run just a twin stick setup only(front case h-n-l, rear h-n-l). I have manual locking hub, so I figure no need for low 2wd stick. Oh yes its a Automatic not sure how I'm going to stop it yet! hahaha

 

[v_man]

I'm a gen 2 early here as I have dual cases in my 90' Runner. I have the Marlin dual ultimate crawler setup with the stock 2.28 case in front of a 4.7 case.

It's definitely an investment as others have mentioned. You'll need the new drivelines, custom cross member, ideally a 23 spline input shaft to handle all the torque, and I'd recommend new motor mounts.

I also had to relocate my rear window switch as the 4.7 shifter now comes up through the floor there.

But once you are setup you got:

-20 forward gears and 4 reverse, you have the right gear for any situation
-A crawl ratio of about 220:1 in your lowest gear
-2lo in any gear , 2lo w/ the rear locked if you want
-Lots of fun shifters to play with

 

[Rockdawg84]

Just got mine, haven't have time to install yet. Maybe after the new year, Front case is MC 4.7 all 23 spline, bolt back to my h-n-l rear mult-mode case. Future plan is to run just a twin stick setup only(front case h-n-l, rear h-n-l). I have manual locking hub, so I figure no need for low 2wd stick. Oh yes its a Automatic not sure how I'm going to stop it yet! hahaha

Very nice! Now you have to update your build thread. Your on the list, so get that bad boy in and document it and it's awesomeness. LOL

 

[Rockdawg84]

Awesome, just found this thread! I just dug out my Tacobox from under the workbench last week and started rebuilding it. I've got it all cleaned up and waiting for a bearing to come in before I put it back together. I have a short shifter for the rear case, but am going to order triple sticks from Radesigns for it. My wife hated not having that second cup holder in my Taco. Following this thread closely!

Cup holders are nice, My wife really agrees, and having the triple stick is great. I wish I had replaced the bearings in my crawl box while i had it apart. I get some growling if I short shift to soon on the street. next time it is out (hopefully no time soon) I will be putting new bearings in.

 

[Jaysen4runner]

[MENTION=53470]Rockdawg84[/MENTION], I don't have a built thread due to others who have their own opinion. All my built even my 3gen pickup SAS I don't have one. People always have different way of building their shit. Some just have to stick their 2 cent in it. I rather not deal with it! But I'll keep update.on pics coming! Here a few of my truck sas, 37s, dual cases, 5.29, air lockers, blah blah. .lmao

 

[Rockdawg84]

[MENTION=53470]Rockdawg84[/MENTION], I don't have a built thread due to others who have their own opinion. All my built even my 3gen pickup SAS I don't have one. People always have different way of building their shit. Some just have to stick their 2 cent in it. I rather not deal with it! But I'll keep update.on pics coming! Here a few of my truck sas, 37s, dual cases, 5.29, air lockers, blah blah. .lmao

Totally understand :guitar2: Great looking rigs!!

 

[Mountain Fun]

Thanks for this post. I'm getting ready to go with dual cases in my 99 3rd gen and it's helping a lot.

 

[rkntoy]

We need to pull together a group buy with Trail-Gear on adapter kits.

 

[jkeith.w]

We need to pull together a group buy with Trail-Gear on adapter kits.

Yes!