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lsd swap to vert question.

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Old 03-15-11, 10:59 PM
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NV lsd swap to vert question.

So i just picked up an S5 Tii lsd rear end and went to put it in my 88 vert. I didnt do enough research and now learned that i need the Tii driveshaft. My question is will the S5 Tii driveshaft slide right on to my 88 vert tranny?? Concern is different length driveshaft and different splines on the tranny.
Old 03-15-11, 11:23 PM
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No, the yokes are different. You have to make/buy a custom driveshaft with a manual NA yoke and a pinion flange from a TII driveshaft. OR have modify a manual NA driveshaft to match the bolt patter on the TII pinion. I'd suggest having a shop with a mill do this, unless you want to risk imbalance.

http://www.mazdatrix.com/g9.htm
Old 03-15-11, 11:27 PM
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The s5 is a vlsd, where as the s4 is a clutch type. I'd ditch the s5 one and get a s4 lsd, as most s5 ones are no better than an open dif.
Old 03-15-11, 11:39 PM
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can i swap the flanges between the two diffs?
Old 03-16-11, 10:28 AM
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You'll also need the axle shafts.

RotaryResurrection has a complete writeup of the differences here.
Old 03-19-11, 10:42 PM
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Originally Posted by Steves13b
can i swap the flanges between the two diffs?
I do not believe so,according to previous write ups.
it is better to just use a conversion shaft to mate the N/A trans to the TII diff.,and use TII axles.(as the N/a axles will not fit to the TII stub flanges).
Old 07-09-12, 11:33 AM
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I know this is a super old thread, but my question doesn't seem important to need a whole new thread. I have access to an '87 GXL LSD that I want to put in my '90 vert. There shouldn't be any issues bolting right up, correct? Both are 4.10 gears, and from what I understand the only swap you need new stub shafts for is the Turbo II diff swap. Am I correct here? Thanks guys.
Old 07-09-12, 12:35 PM
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you can have the driveshaft shop make you a custom driveshaft if you want....or just swap the s5 TII motor
Old 07-09-12, 01:02 PM
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I didn't think I would need a new driveshaft if I'm just putting on the diff? I'm not doing a motor or tranny swap, I'm just putting a limited slip diff on. I was told it bolts right up...
Old 07-09-12, 01:26 PM
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limited slip from an s4 gxl or s5 gtus will bolt up to everything, any turbo lsd will not.
Old 07-09-12, 01:30 PM
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Originally Posted by JDP6693
I didn't think I would need a new driveshaft if I'm just putting on the diff? I'm not doing a motor or tranny swap, I'm just putting a limited slip diff on. I was told it bolts right up...
All of the non-turbo FC differentials have the same mounting points, so it will bolt right up if you currently have a non-turbo differential in your car.
Old 07-09-12, 02:12 PM
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Click the link and Read....Hopefully this will clarify a lot of your questions

http://www.rotaryresurrection.com/2n...in_differ.html
Old 07-09-12, 03:17 PM
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Originally Posted by Broke_A_Baller
Click the link and Read....Hopefully this will clarify a lot of your questions

Rotary Resurrection home of the budget rebuild.
I found that site forever ago but I lost the page. Thanks!

And I'm glad you guys confirmed it for me. I thought I was correct, but I wanted to make sure. Thanks!!
Old 07-09-12, 04:04 PM
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No problem man good luck
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