dual case school

Started by dentedfender, October 21, 2005, 07:41:09 PM

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dentedfender

October 21, 2005, 07:41:09 PM
Im pretty confused with some thing on dual cases so i was wondering if you all could help me, if i were to get duals for my 85 what all would i need to buy? would i have to legthen my front driveshaft? could i still be able to use what is now 4 high? and which case would i put the 4.7s in?
85 4runner rears up front f-150s out back dual 2.28 cases 22re, rear discs, 5.29s, locked f/r, 38s....... list goes on and on

RHG

#1
October 21, 2005, 07:47:13 PM
Yes you could still use 4High, you would put the 4.7's in the rear case because that way you are puting high torque on less parts. To do the duals you need an adapter and another case for a donor, also a x-member/skidplate built for dual cases. Front driveshaft will need to be lengthened. The rear will need to be shortened as well. Best bet to do is to get rid of that center bearing and just use a one piece rear driveshaft. But I am not sure if your runner has this or it comes already as a one piece. :dunno: glad to school ya...keep asking questions. :thumbs:
Only the dead have seen the end of war - Plato

89 Ext Cab Long Bed, SAS'd, Double 2.28's, 5.29's, 38" TSL's, Allied Beadlocks, Half Doors, Custom Trail Bodywork

dentedfender

#2
October 21, 2005, 07:54:16 PM
thanks good to know before i forked out the $ for a longslip heavy duty front drive shaft next week
85 4runner rears up front f-150s out back dual 2.28 cases 22re, rear discs, 5.29s, locked f/r, 38s....... list goes on and on

dentedfender

#3
October 21, 2005, 07:56:48 PM
oh yeah can i upgrade to the 23 spline or do i have to keep with the 21 spline?
85 4runner rears up front f-150s out back dual 2.28 cases 22re, rear discs, 5.29s, locked f/r, 38s....... list goes on and on

RHG

#4
October 21, 2005, 08:08:50 PM
your rear case can be upgraded to 23 spline but im pretty sure that the front has to stay the same cause it needs to match up to your tranny which unless you have a turbo motor is 21 spline.
Only the dead have seen the end of war - Plato

89 Ext Cab Long Bed, SAS'd, Double 2.28's, 5.29's, 38" TSL's, Allied Beadlocks, Half Doors, Custom Trail Bodywork

shad

#5
October 22, 2005, 10:15:37 AM
You might also concider doing a cardigan joint as well since you will likely have vibes from a short rear Driveshaft.
86 Toyota 4 runner
22re screaming on 4.56's rolling 35's
My cardomain page

dentedfender

#6
October 23, 2005, 10:14:19 AM
thanks guys i think i am going to run the cv rear drive shaft when i go with it, seems pointless not to.
85 4runner rears up front f-150s out back dual 2.28 cases 22re, rear discs, 5.29s, locked f/r, 38s....... list goes on and on

Ramrod

#7
October 23, 2005, 12:49:50 PM
If you want to save money you can skip on buyin the crossmember and just cut a big notch in your stock one and plate it.  I did this on one and it worked fine.

Duffil

#8
October 23, 2005, 01:12:17 PM
 :shake_head:
Quote from: shad on October 22, 2005, 10:15:37 AM
You might also concider doing a cardigan joint as well since you will likely have vibes from a short rear Driveshaft.

:haha: I thiink you mean Cardan Joint.  Cardigan is a sweater. It's ok, we know what you meant. :qtip:
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