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  #91 (permalink)  
Old 01-22-2014, 06:43 AM
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You probably have a 7.5 and a 7.6 differential. The 7.5 and early 7.6 were both 26 spline. Your locker fits one but not the other. You might need to look around for another 3 series 26 spline differentail and find one that your locker fits.

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  #92 (permalink)  
Old 01-22-2014, 07:02 AM
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I just made a decision, costs money of course, Iīm going to reuse my 2 carrier and get a 3.42 ring and pinion from Summit to fit it.
There isīnt a 3.23 for the 2 carrier.

Not happy but thatīs the way the mud flops.
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  #93 (permalink)  
Old 01-22-2014, 07:30 AM
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Quote:
Originally Posted by malc View Post
Iīm using 26 spline.
I only search parts relative to 26 spline 7.5.
The 28 spline axles wont go in an original 26 spline GM case but the aftermarket cases are machined to accept both. Rockauto lists 3 different, 3 series cases for the 82-92 7.5.
I have had the exact same problem you are having.
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  #94 (permalink)  
Old 01-22-2014, 07:36 AM
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Quote:
Originally Posted by lmsport View Post
The 28 spline axles wont go in an original 26 spline GM case but the aftermarket cases are machined to accept both. Rockauto lists 3 different, 3 series cases for the 82-92 7.5.
I have had the exact same problem you are having.
Couldīnt you find what you need in a wrecking yard, thatīs where Iīd be if I lived in the States ?
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  #95 (permalink)  
Old 01-22-2014, 01:18 PM
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The difference in these carriers appears to be on the ring flange side,
the 2 carrier is machined deeper.
The 2 carrier has one big window and a small one, the 3 carrier has two big windows,
the 2 looks much stronger.

3 carrier.


2 carrier.
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  #96 (permalink)  
Old 01-22-2014, 02:13 PM
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The 2 series is probably a 7.6 differential and the 3 series is probably a 7.5 differential. If you were here I could fix you up easily. I've got a pile of this stuff from jobs I've done over the years. I've hauled off many truck loads of these things, and I've still got more than I could use in many more years.
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  #97 (permalink)  
Old 01-22-2014, 11:31 PM
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Originally Posted by big gear head View Post
The 2 series is probably a 7.6 differential and the 3 series is probably a 7.5 differential. If you were here I could fix you up easily. I've got a pile of this stuff from jobs I've done over the years. I've hauled off many truck loads of these things, and I've still got more than I could use in many more years.
Thou tauntest me somewhat......
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  #98 (permalink)  
Old 01-23-2014, 08:40 AM
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Removed the ring gear from my 2 carrier today.
I say removed, the bolts were not tight and it fell off...

Itīs cleaned up, the bearings are on, just waiting on the new ring and pinion..............start over.
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Old 01-26-2014, 10:32 AM
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Had a great time on my back today getting rear end gear oil off the underbody, boy was that crud thick.
Had to use a scraper first then degreaser.

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Old 01-28-2014, 02:25 PM
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The new gearset arrived this morning.
The ring is on.


The pinion is in.....provisionally.


Let the fun begin again.
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  #101 (permalink)  
Old 01-29-2014, 08:16 AM
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Huzzah!!!
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  #102 (permalink)  
Old 01-29-2014, 09:05 AM
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Got this far, cold stopped play....



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  #103 (permalink)  
Old 02-03-2014, 02:15 PM
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This is where Iīm at today, installed new stainless brakeline.



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  #104 (permalink)  
Old 04-04-2014, 05:17 AM
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Axle revisited......

I had it all together and there was a whine from it, I thought, maybe too much preload and I wasīnt that confident using the crush sleeve elininator spacer.

So recently I did it over, pinion preload 20inlbs.

Tucked it back under the car and it still whines.
Chiltern says 15 - 30 inlbs on the pinion (new bearings) but where must it be not to whine ?

Should I now tighten the pinion nut a little at a time until it stops whining or was 20 inlbs already too much ?
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  #105 (permalink)  
Old 04-04-2014, 05:58 AM
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20 inch pounds is about perfect. The noise is not coming from the pinion bearings, it's coming from the gears.

I just looked at your contact pattern and it looks like you could use about .002 more on the pinion shim. Maybe that would help. Some gears are going to make a little noise no matter how well they are set up.
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