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What diff do I have?

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Old Jun 20, 2011 | 09:09 AM
  #1  
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From: Chester S.C.
What diff do I have?

What diff is in my 94 4 cylinder truck is it the 7.5 or 8 inch?
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Old Jun 20, 2011 | 09:21 AM
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You tell me. As in what's the axle code?

Don't know? Here's how you find out.
http://toyota.off-road.com/trucks-4x...ion-18588.html

For future reference, this is newbie tech(there's a forum for that...which is why it was moved here). And please search first before posting new threads.

Thanks!

Last edited by MudHippy; Jun 20, 2011 at 09:56 AM.
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Old Jun 20, 2011 | 09:35 AM
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From: Prunedale Ca
^What he said^

A simple search would have probably answered your question.

Here is another good link:

http://home.4x4wire.com/erik/diffs/
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Old Jun 20, 2011 | 09:41 AM
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Probably nothing. If either this question, or "what gears do I have?", isn't asked/answered daily, sometimes multiply, I'll eat my (insert noun)!

Last edited by MudHippy; Jun 20, 2011 at 09:44 AM.
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Old Jun 20, 2011 | 09:48 AM
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From: Wilkes-Barre, PA, USA
Originally Posted by ol' blue
What diff is in my 94 4 cylinder truck is it the 7.5 or 8 inch?
Gonna take a shot in the dark here and say BOTH.
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Old Jun 20, 2011 | 09:50 AM
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From: PNW
Front 7.5
Rear 8"
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Old Jun 20, 2011 | 09:54 AM
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From: Wilkes-Barre, PA, USA
unless it's a 2wd then 7.5" Rear but even then some 2wd's came with 8's as well. (although I have never seen one). To be completely accurate you have to find the gear code on your vin plate. And that's only going to assume a previous owner never changed it.
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Old Jun 20, 2011 | 09:58 AM
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This was moved to Newbie land

:wabbit2:
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Old Jun 20, 2011 | 10:11 AM
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Cool! I was pretty sure I hadn't imagined it being in the 86-95 Trucks & 4Runners forum... Good idea too BTW.
Originally Posted by xxxtreme22r
To be completely accurate you have to find the gear code on your vin plate. And that's only going to assume a previous owner never changed it.
Right. Though, in reality, there's no way of assuring the complete accuracy of the code on the information plate either. Mine's off by one number for instance, it reads G292 but should be G294(verified by removal/disassembly, and the fact that most V6s shouldn't have an axle code that ends in 2, it's almost always supposed to be 4). Regardless, it's still the most accurate method. Aside from tearing the diffs apart and visually inspecting/physically measuring the various components.

Last edited by MudHippy; Jun 20, 2011 at 10:41 AM.
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Old Jun 20, 2011 | 11:11 AM
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From: Chester S.C.
I was wondering because my third member needs to be fixed and my friend is gonna trade me his front one off an 86 model for my rear one I was tryin to find out if it would fit
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Old Jun 20, 2011 | 11:23 AM
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Your front is 7.5
Rear 8

Front and rear are not interchangeable on IFS.

:wabbit2:
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Old Jun 20, 2011 | 11:38 AM
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From: Chester S.C.
Sorry I ment we were gonna trade 3rd members would that work?
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Old Jun 20, 2011 | 11:55 AM
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From: Wilkes-Barre, PA, USA
no they wont work. And pretty darn sure if you only had a 7.5" rear diff and your truck was 2wd that the front 3rd from a 4wd wont work either.
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Old Jun 20, 2011 | 12:22 PM
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There's a thread on pirate about it somewhere actually. But, it's regarding swapping JUST the carrier and ring and pinion from an IFS 7.5" to a 2WD 7.5" rear. NOT the entire 3rd member(which isn't what an IFS has in the front technically speaking anyways, so of course you couldn't). IIRC, those parts aren't even all compatible either. Later than ? V6 IFS front axles have a different carrier(bigger carrier bearings) than a 4 cyl. IFS or 2WD rear(which are the same). And the ring and pinion, namely the pinion, is also slightly different between IFS and 2WD(not sure, but I believe it's the length of the flange splines or threaded portion where the nut goes?) though it may still be swappable between all 3 types of 7.5" axles(there's a 4th type too, the 2WD Supra 7.5" axle, again no 3rd member so it's like an IFS that way, but internally it's exactly the same as a PU's 2WD 7.5" 3rd member, so should be categorized with it as a 2WD 7.5" as far as that goes...so 3 types for the sake of this argument). If I get bored enough, I'll dig that up...

Last edited by MudHippy; Jun 20, 2011 at 01:17 PM.
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Old Jun 20, 2011 | 12:27 PM
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From: Wilkes-Barre, PA, USA
in other words if you don't know what your doing, don't try to put a 7.5" ifs front carrier into a 2wd rear. Thanks.
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Old Jun 21, 2011 | 05:29 AM
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From: Chester S.C.
My friend has a straight axle in the front we got it good thing is I got a locker now in the rear
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Old Jun 21, 2011 | 06:20 AM
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From: Wilkes-Barre, PA, USA
be careful putting locker meant for front applications in the rear and vise versa. Not sure about any other ones, but if its a detroit you have to do a few things to convert it into a rear and vise versa.

And a straight axle yota has 8" diffs front and rear. It also depends on if your talking high pinion diff or not whether the ring and pinion can or cannot be used back and forth. I can't remember off hand but you have to be careful if the gears are reverse cut or not, they will work just not nearly as strong.
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Old Jun 21, 2011 | 07:40 AM
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From: Chester S.C.
Yea he pulled it from the rear of his truck sorry if I'm not makin sense I'm doin this from a fone but we got it in it sounds like my cv joints are busted because the locker disengaging when I turn
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Old Jun 21, 2011 | 07:48 AM
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From: Wilkes-Barre, PA, USA
depending on which locker you have it will disengage when you turn. Especially if it's a limited slip locker. But I could be wrong, I am not so proficient when it comes to lockers.
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Old Jun 21, 2011 | 08:03 AM
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From: Chester S.C.
Yea but now I do a couple of things in to wheel drive that I would have had to put it in four wheel drive
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