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post #1 of 15 (permalink) Old 05-09-13, 06:40 PM Thread Starter
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Please help

Hello everyone I need some help. Well a 99 cobra gt rear end fit in my 99 ford mustang gt. I blew my spider gears in my other rear end. And I bought a V6 and put that in my car. Big mistake lol so please help I've been looking all over for rear end and if the cobra end will fit that's a score. Cause it's only 450 bucks lol

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post #2 of 15 (permalink) Old 05-09-13, 11:03 PM
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Re: Please help

Someone else will need to confirm this but I understand that the SVT Cobra in your model year ran an independent rear and the rest of the models ran a live axle. This would make it less likely that the internal diff parts will interchange but the whole IRS can be bolted into the the models to replace the live axle rear end. This would be a little more involved but it is a bolt up job by the looks.

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post #3 of 15 (permalink) Old 05-10-13, 02:57 AM Thread Starter
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Re: Please help

So if I buy the cobra end would I have a lot of work putting it in r would it be a bolt up that's it. Sorry I don't know much haha. What's the difference between a IRS end and the one in the ford mustang gt


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post #4 of 15 (permalink) Old 05-10-13, 08:22 PM
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Re: Please help

Live axle has the center housing extending out to the hubs, much like most rear wheel drives. When you hit a bump on on tire, the entire shaft rear end will move. On an independent, the center housing is locked in place and u-joints or CV joints attach to the shafts so that only the side that hits the bump is affected. An IRS will keep more rubber to the pavement allowing for better traction and handling.

Ever notice that there's so many high performance parts available for GM products?

Did you ever think that maybe they NEED them?
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post #5 of 15 (permalink) Old 05-11-13, 01:06 AM
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Re: Please help

Quote:
Originally Posted by 99 stang gt View Post
So if I buy the cobra end would I have a lot of work putting it in r would it be a bolt up that's it. Sorry I don't know much haha. What's the difference between a IRS end and the one in the ford mustang gt


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Yes I think so. You would be better to find the right parts for your GT if you can. It would be simpler and easier to replace with the correct parts.

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post #6 of 15 (permalink) Old 05-11-13, 10:48 PM Thread Starter
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Re: Please help

Awesome thank u guy help me out a lot. If u have any ideas to help me please keep them coming lol


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post #7 of 15 (permalink) Old 05-11-13, 11:45 PM
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Re: Please help

If you can get a limited slip GT rear end then it may last a bit better. I'm guessing you used a V6 rear end and it has probably been wheel spinning on one tyre and blowing the spider gears. If you do one wheel skids then it puts alot of load on the spider gears. A limited slip rear should attempt to put the load through both rear wheels and take some load off the spiders.

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post #8 of 15 (permalink) Old 05-17-13, 02:28 AM Thread Starter
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Re: Please help

Please help me on what rear ends I can put in my 1999 ford mustang gt. it's so hard to find one.


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post #9 of 15 (permalink) Old 05-17-13, 07:28 PM
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Re: Please help

Ford used the same 8.8" rear differential from 99 to 04. If you don't have the tooling and experience to rebuild the rear end, swapping it out is fairly straight forward. I'd either try to find a salvage or hit up E-bay, they had plenty.

Ever notice that there's so many high performance parts available for GM products?

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post #10 of 15 (permalink) Old 05-17-13, 10:39 PM Thread Starter
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Re: Please help

Ok so I can go up to a 04 gt. rear end that will swap right into it? I wish I still had the other end. But they took off the back control arms to weld on the v6 end I have in there now lol. I found a cobra gt same year as mine for cheap and it's right in my town lol I just don't k know how much work r is it a good clean swap lol totally not a car wiz lol


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