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Old 01-26-2010
--weezl--'s Avatar
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diff questions

i'm sure people have asked this before, but i can't find anything via search...

now, my question is, will my rear diff (torsen) fit in my front housing? i read somewhere i need an open diff for a locker, and figured i could kill 2 birds with 1 stone, get a torsen up front, and a locker in the rear without needing any extra parts... does this make sense? will this work?
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Old 01-26-2010
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Originally Posted by --weezl-- View Post
i'm sure people have asked this before, but i can't find anything via search...

now, my question is, will my rear diff (torsen) fit in my front housing? i read somewhere i need an open diff for a locker, and figured i could kill 2 birds with 1 stone, get a torsen up front, and a locker in the rear without needing any extra parts... does this make sense? will this work?
Hell to the no. lol. They're two completely different axles all together, man. Both require their own specific parts. Rear axle is a Ford 8.8". Front axle is a Dana 35(sometimes called an M35 too).


Torsen has released and/or is going to be releasing a front IFS D35 limited slip very soon. But I haven't heard when. They just recently debuted the production piece in November at the '09 SEMA show.

What you've got in the back is a Torsen T2 limited slip differential. If you want something different back there, it requires a new carrier/differential. The Torsen IS the carrier/differential. You may have heard the term "lunchbox lockers"? These only work inside an Open differential and select limited slips(like the Ford Traction Loc). All other lockers and limited slips are full carrier replacements.
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Old 01-26-2010
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ahhh i see, so no... but if i buy like an.... ARB? locker, that's the open diff kit right? or is that the carrier? do they come 31 and 28 spline?

but they don't fit up front :( i was hoping it was going to be so easy, take my torsen and place it up front, and then put the locker in the rear... either use my open front diff for the locker, or put it on the shelf, i want something up front other than the open...

btw, welcome back shane!
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Old 01-26-2010
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ahhh i see, so no... but if i buy like an.... ARB? locker, that's the open diff kit right? or is that the carrier? do they come 31 and 28 spline?
You're gonna have to look at any particular locker's description and details. Some lockers and limited slips are made for both 28 and 31spline...while others just make one or the other. They are NOT interchangeable.....a 28 spline locker/ls WILL NOT work on a 31spline axle.

The ARB is OPEN when unlocked, and full spool(100% locked) when locked. It's a full replacement carrier.

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i want something up front other than the open...
You really have no options now til the Torsen finally comes out after like 5 years of waiting. lol. Powertrax No-Slip was a front locker option. So was the Aussie Locker. Both are "lunchbox lockers" and Both have since gone out of production. Unless...of course there's that Lincoln Locker option.

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btw, welcome back shane!
Thanks.
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