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05' z51 c6 rear diff

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Old Oct 22, 2014 | 12:48 AM
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Default 05' z51 c6 rear diff

From what I understand the 05 c6 diff shares the same diff as the c5. Is this true?

Will the c6 zo6 output shafts swap right into into the 05' diff?

Dealer swapped out the left rear axle seal. 2 days later it started leaking again. Now they want to tear into the rear end and r&r the diff as they think something is worn and shredding the seal. But of course they weren't sure. I'm guessing the bearings are worn. But I haven't had a chance to look, as they have it and they called me late. Anyways, while they're in there, I was gonna have em pop in the z06 output shafts to help strengthen it.
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Old Oct 22, 2014 | 03:53 AM
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Z06 output shafts will fit. If you are thinking of abusing it any further, it may be in your best interest to upgrade to an 06+ diff.

I have a brand new Z06 shaft and gear with retainer ring if you need one. Just got them in the mail today, won't be needing them.

Also, if you pick up another diff, 09+ diffs have Z06 output shafts, diff clutches, and pinion carrier/bearings already in them.
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Old Oct 22, 2014 | 08:55 PM
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I think it would be far cheaper to leave the weaker output shafts to prolong (not prevent) this. My advice would be to replace the diff with a Z06 while it still has a core value.


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Old Oct 22, 2014 | 09:16 PM
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I considered it, till I discovered the swap is nearly $4k for the parts. At that cost ill just blow this unit up and buy another over and over! 😂😂😂

I don't drag or have hard launches. So the diff lives a decent life with me
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Old Oct 23, 2014 | 08:42 PM
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Originally Posted by ChpThril
From what I understand the 05 c6 diff shares the same diff as the c5. Is this true?

Will the c6 zo6 output shafts swap right into into the 05' diff?

Dealer swapped out the left rear axle seal. 2 days later it started leaking again. Now they want to tear into the rear end and r&r the diff as they think something is worn and shredding the seal. But of course they weren't sure. I'm guessing the bearings are worn. But I haven't had a chance to look, as they have it and they called me late. Anyways, while they're in there, I was gonna have em pop in the z06 output shafts to help strengthen it.
It does bolt right up to an 05... If you go that route you need to make a new mount.. If you are going that route and interested let me know.. I make a bracket kit that allows you to bolt it in with no welding or drilling.

Last edited by stanger383; Oct 28, 2014 at 08:24 PM.
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Old Oct 28, 2014 | 05:19 PM
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Originally Posted by stanger383
It does bolt right up to an 05... If you go that route you need to make a new mount.. If you are going that route and interested let me know.. I make a bracket kit that allows you to bolt it in with now welding or drilling.
care to elaborate? i have an '05 manual and have wondered when it is going to blow up...been looking into installing a C5 z06 differential...and have heard you need a mounting plate to bolt it to the C6 cradle...is that what you are talking about that you fabricate?
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Old Oct 28, 2014 | 08:31 PM
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Originally Posted by veloz
care to elaborate? i have an '05 manual and have wondered when it is going to blow up...been looking into installing a C5 z06 differential...and have heard you need a mounting plate to bolt it to the C6 cradle...is that what you are talking about that you fabricate?
That is correct.. It consists of 2 brackets and an isolater that allow you to bolt it into the c6 cradle with no welding or drilling required. You do however need to grind some of the lower fins off the diff regardless of how you adapt it. Other than that it is a bolt in package.
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Old Oct 29, 2014 | 08:22 AM
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Works like a charm. I can vouch for it. Thanks Norm!
Jeff

Originally Posted by stanger383
That is correct.. It consists of 2 brackets and an isolater that allow you to bolt it into the c6 cradle with no welding or drilling required. You do however need to grind some of the lower fins off the diff regardless of how you adapt it. Other than that it is a bolt in package.
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Old Nov 2, 2014 | 09:49 AM
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very good...i got you saved up for when im ready...BTW what is it made out of, do you include all parts for installation and what's the cost.?

other than the differential, anything else that needs to be purchased? does everything else bolts up to the z differential?

Last edited by veloz; Nov 2, 2014 at 09:52 AM.
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Old Jun 2, 2025 | 12:12 AM
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Originally Posted by stanger383
It does bolt right up to an 05... If you go that route you need to make a new mount.. If you are going that route and interested let me know.. I make a bracket kit that allows you to bolt it in with no welding or drilling.
hey do you still make this bracket? Does it allow 06+ differentials to bolt onto the 05 subframe or? Are there different mounting points for 06+ diffs?
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Old Jun 8, 2025 | 12:24 PM
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Originally Posted by Krsone5799
hey do you still make this bracket? Does it allow 06+ differentials to bolt onto the 05 subframe or? Are there different mounting points for 06+ diffs?

Holy thread revival Batman!

I have done this exact setup with Stangers custom mount. It’s high quality! No issues whatsoever but it’s only to convert a 2005 differential to a c5 differential. Which the objective is to acquire a c5 z06 3 rib from 2001-2004.

i believe all c6’s have the same mounting points on the cradle. The 2005 T56 transmission shares the same tail shaft/housing as the c5. Basically the 2005 T56 6 speed is carried over from the c5 and the 2005 differential has the same bolt pattern at the transmission mating surface as the c5 but the c6 diff has 2 points of mounting vs 1 point like the c5.

If you have a 2005 and want the heavier duty 2006+ differential, you need a 2006+ diff and the output tail shaft housing from the 2006+ T56 transmission.


The idea behind having 2 points of mounting on the cradle is to reduce flexing. The issue is GM did not reinforce the 2005 differential housing enough and it had weak points which allowed it to flex and break when wheel hop is introduced.

Last edited by NELH; Jun 8, 2025 at 12:44 PM.
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Old Jun 13, 2025 | 09:47 AM
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Default Do you still make these brackets?

Originally Posted by stanger383
That is correct.. It consists of 2 brackets and an isolater that allow you to bolt it into the c6 cradle with no welding or drilling required. You do however need to grind some of the lower fins off the diff regardless of how you adapt it. Other than that it is a bolt in package.
im in need of some crackers made for my swap, any info would be appreciated thank you
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Old Jun 13, 2025 | 01:03 PM
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Originally Posted by GTR_David
im in need of some crackers made for my swap, any info would be appreciated thank you
I don’t think Stanger383 makes crackers. LOL

however, I just texted him to see if he still makes mounts anymore. I will reply back later when I hear back.
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Old Jun 13, 2025 | 01:15 PM
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Originally Posted by GTR_David
im in need of some crackers made for my swap, any info would be appreciated thank you
he responded back. He owns a business called Stormin Norman roll cages.

Look him up

Last edited by NELH; Jun 14, 2025 at 12:22 AM.
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Old Jun 14, 2025 | 12:16 AM
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Originally Posted by NELH
he responded back. He owns a business called Stormin Norman roll cages.

I will not post his private information, but here is a link to his business Facebook.

https://m.facebook.com/100057514905187/
I meant brackets lol my bad on the typo, it looks like the link is not working says for “privacy reasons”
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Old Jun 14, 2025 | 12:21 AM
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Originally Posted by GTR_David
I meant brackets lol my bad on the typo, it looks like the link is not working says for “privacy reasons”

mmmm

he said you should be able to contact him via the Facebook profile. You may have to follow his page to send him a message. If you google Stormin Norman Roll Cages, you will see his FB link.

well I tried to private message you his cell but it would not let me send you a private message.

if you can send me a PM with your contact info, I’ll text it over to him and have him get in touch with you. He is a great guy and makes top notch components.
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Old Jun 14, 2025 | 02:00 AM
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Originally Posted by NELH
mmmm

he said you should be able to contact him via the Facebook profile. You may have to follow his page to send him a message. If you google Stormin Norman Roll Cages, you will see his FB link.

well I tried to private message you his cell but it would not let me send you a private message.

if you can send me a PM with your contact info, I’ll text it over to him and have him get in touch with you. He is a great guy and makes top notch components.
wont let me send you a PM i was having this issue earlier
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