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View Full Version : want to run dual t cases


wick07
08-20-2006, 04:37 PM
hey guys
i want to run a dual t case setup and i would like to know all the pieces i need from the t case to the axels if someone could let me know what i need and who makes the most reliable adaptor piece and such that would be fliping awsome

tnerb
08-20-2006, 06:02 PM
marlin.com for ur adapter. secound tcase drive shaft mods, different tcase mount id recomend. think the marlin sigh has all the instal instruction on there site to somewhere

Toyquad
08-20-2006, 07:52 PM
www.marlincrawler.com (http://www.marlincrawler.com) might as well go all out and get the 5.1 gears for the rear t case.

Things you will need:
lenghten front shaft (best to make a square front shaft)
shorten rear shaft
cut hole in floor for new shifter
a second top shift t case


The stock t case crossmember will work.....but you should buy or make one that utilizes the mounts on both t cases. Motor mounts like to break from the added torque so chaining down the driverside engine mount is a good idea.


for second gen extra cab trucks.... with a 4-6inch lift.... for the new front shaft you can use the rear half of a two piece driveshaft off of a 2nd gen ex cab short box.
a 1st gen 4runner 22re 5spd rear shaft works mint for your new rear shaft

Ditchpig
08-20-2006, 08:01 PM
http://www.marlincrawler.com/htm/transfercase/pickup_dual.htm is the page that it's on @ Marlin. Sweet setup, but I'd make sure my truck could even handle crawling that low before putting these in!

Ditchpig
08-20-2006, 08:03 PM
The highest gears that I saw there were the 4.70 crawler gears, didn't see 5.10

Toyquad
08-20-2006, 08:16 PM
look harder....... they call it 5:1 but its actualy 4.9:1

ri0
08-20-2006, 08:19 PM
I wouldn't bother getting the 4.7..I have it, lots of times I find that just dual cases is more than enough gearing....

wick07
08-20-2006, 08:44 PM
how do i know if i got a 21 or 23 spline t case?

Toyquad
08-20-2006, 09:06 PM
I wouldn't bother getting the 4.7..I have it, lots of times I find that just dual cases is more than enough gearing....


fine i'll trade you my stock dual cases for your duals with 4.7[f]

Toyquad
08-20-2006, 09:07 PM
how do i know if i got a 21 or 23 spline t case?


if you have a 20r,22r, or 22re you have 21 spline...... 22rte (turbo) you have 23 spline

tell us a little about your truck.....

wick07
08-20-2006, 10:15 PM
well i just picked up a new toy its a 89 22re 5spd with 33" on stock gears im i have a ifs lift goin in ( want to do sas but got the lift for a case ofbeer so) body lift im getting from heavy one day. my plan with the truck is to make it a reliable trail rig. i figure i would do the dual transfer case cuz i have access to cheap toyota parts being that im a junior tech at toyota. and i got a t case for 20 bucks and couldnt go wrong but was not to sure on how to run this settup i really appreciate all the time you guys took thanks alot

wick07
08-20-2006, 10:15 PM
and if you have any other tips involving this or the truck please let me know

Toyquad
08-20-2006, 11:04 PM
one tip .... solid axle... sell the ifs lift....... And if you still have open diffs you'll definetly want to lock them before doing the dual t cases. I highly doubt the cv joints or ifs diff for that matter will like the added torque of the dual t cases. I had my rear end welded, front open when i put in my dual t case and couldnt stand it..... the front was welded for the next weekend.

wick07
08-20-2006, 11:29 PM
yeah but i want the sas believe me my last toy was sasd and i already miss it but 1300 for the kit plus axel then the time to rebuild the axel and install the lift i mean thats probably 50-60plus hours of work

wick07
08-20-2006, 11:29 PM
when the ifs lift is just siting here and it would probably take me 6 tops to put it in i just dont know tough descision

kamloopsyota
08-21-2006, 12:02 AM
you can just trade me for my 82 haha, no need to do a swap, just an ugly truck

trevyota
08-21-2006, 12:35 PM
if i were you i would think about a sas or a locker before you get some marlin bling...

50 - 60 hours... well... you gotta pay if you wana play.

Big_Ern
08-21-2006, 01:00 PM
lock the rear and dual cases will get you pretty far with just IFS. But 33's are about the max for IFS, especially with the aded torque of dual cases, so I wouldn't bother with the IFS lift.

Wheel it for a while then SAS when you've got the $$ & time to do it[cheers]

wick07
08-21-2006, 01:57 PM
thanks yo for all the shit i think im gonna order the trail gear sas kit and 5" rear kit this week you all are right sas is the way to go

trevyota
08-21-2006, 05:16 PM
i tihnk the general concensus was to lock the rear first.


but fuck... not our money... sas the bitch

wick07
08-21-2006, 08:57 PM
o o well the wife dont know yet so im still ok

ri0
08-21-2006, 09:10 PM
if money is an issue for not doing the sas right away...throw a locker in the rear....then start saving for sas....if you weld the front ifs...you will be breaking shit the next time you go out for sure...

as for the ifs lift...sell it or instal it in some body elses truck to make money for the sas....

solid axel is way more reliable...which I think you want...

sj-x 500
08-21-2006, 09:40 PM
lock the ass end up you won't regret it, you almost double the amount of traction available when you lock the ass end, the dual t-cases usually comes after you get the traction to take advantage of the gear available.