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Where Are All The Caddy V's At?

This is a discussion on Where Are All The Caddy V's At? within the Cadillac CTS-V forums, part of the Vehicle Specific category; Originally Posted by Cutlass Maybe they had some internal differences? Either way they were still too small for that car ...

  1. #21
    Senior Member 2001camaroSS's Avatar
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    Quote Originally Posted by Cutlass View Post
    Maybe they had some internal differences? Either way they were still too small for that car it seems. If I remember correctly, the ring gear was close to the same 7.5" that our F-bodies have.
    Probably something along those lines. When I get a chance today I will try to copy some of the reading info. They are definitely an issue but it seems that the wheel hop is what really does them in and that is really prevalent on these cars.

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    Senior Member 2001camaroSS's Avatar
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    "Good news is you have an '06 that has the upgraded diff. My diff was replaced & upgraded to the newer '06/07 style due to a slight whine which is many times more common than catastrophic failure. Long story short, don't wheel hop the bloody thing, and it should last you."

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    Senior Member 2001camaroSS's Avatar
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    Original Rear P/N 10368780
    Updated Rear P/N 15793756

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    Moderator Cutlass's Avatar
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    There was kinda 3 separate problems with the CTS rear diff. The original 04 and 05 diffs were whining bad and sometimes completely failing in low mileage cars (abused or not). And these failures kept repeating and repeating leading to the CTS-V bad rearend rep. They also had issues with pinion seal leaks....which also leads to quick failures. It seems like the "upgraded" 06 and 07 takes care of those 2 problems.
    The 3rd problem is wheel hop and abuse causes the gears to fail and case to split open (to be fair, I've seen Corvettes do that too but its much more rare.) Any 04 to 07 CTS-V is susceptible to that still because the diff just isn't strong enough (similar to the F-bodies). GM and other companies has fixes for the wheel hop and that'll help the rearend last ok unless its abused hard.

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    Senior Member 2001camaroSS's Avatar
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    Quote Originally Posted by Cutlass View Post
    There was kinda 3 separate problems with the CTS rear diff. The original 04 and 05 diffs were whining bad and sometimes completely failing in low mileage cars (abused or not). And these failures kept repeating and repeating leading to the CTS-V bad rearend rep. They also had issues with pinion seal leaks....which also leads to quick failures. It seems like the "upgraded" 06 and 07 takes care of those 2 problems.
    The 3rd problem is wheel hop and abuse causes the gears to fail and case to split open (to be fair, I've seen Corvettes do that too but its much more rare.) Any 04 to 07 CTS-V is susceptible to that still because the diff just isn't strong enough (similar to the F-bodies). GM and other companies has fixes for the wheel hop and that'll help the rearend last ok unless its abused hard.
    yea the rear on my car has been replaced twice. Once at 13,xxx miles and again at 26,xxx miles. I will admit the car does wheel hop pretty easily once you get the tires spinning. A lot of the guys on tech fix this issue with different axles or an anti wheel hop kit. Pretty sad these problems exist on a car that cost $55,000 new. And GM wonders why they have a bad rep.

  6. #26
    dbl clutch'n like i shld WICKEDLS1's Avatar
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    hm ill have to see if mine had the up dated part number or not. but i added some pics to my album if you wanna check it out aaron

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    Senior Member 2001camaroSS's Avatar
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    Good looking car. How did it run at the track?
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    dbl clutch'n like i shld WICKEDLS1's Avatar
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    not too bad it went 13.6 @ 111 with a 2.4 60' since i didnt want to break the rear end

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    Senior Member 2001camaroSS's Avatar
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    Quote Originally Posted by WICKEDLS1 View Post
    not too bad it went 13.6 @ 111 with a 2.4 60' since i didnt want to break the rear end
    That's not bad at all. Make some mods that prevent wheel hope and you'll be able to push it even more.

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    Quote Originally Posted by 2001camaroSS View Post
    That's not bad at all. Make some mods that prevent wheel hope and you'll be able to push it even more.
    yup if i get the 8.8 swap i want with some 1000 hp axles as well as all the needed suspension and a good tire. ill beat the hell out of it lol maybe a 150 out of the hole for the hell of it

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