Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

Anyone experience a clunk with their CS 8.8 kit??

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Old 08-24-2012, 12:01 PM
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Originally Posted by Skidmarcx
I wouldn't worry too much... I don't think any of us make enough power to break the diff... You may have a few things to iron out, but it's a good kit. I was given the option between carriers... I chose Truetrac because I don't give a **** about a little noise I'm sure you'll be fine with the cobra carrier
What is the cobra diff good til?

Is 800 rwhp out of the question for this kit?
Old 08-24-2012, 12:06 PM
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My buddy is putting down 850 in his whipple cobra on stock cobra 8.8 and carrier with no problems. Runs slicks at the track and all.

This is why i highly doubt ill ever have an issue out of mine since its supposed to be a little stronger than even that one is.
Old 08-24-2012, 12:32 PM
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Sweet....

Does CS offer the cobra diff?
Would need a lucky charm to find one up here.
I was just going to go with the Iron 4K setup they have....
Old 08-24-2012, 12:42 PM
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Originally Posted by vmapper
Sweet....

Does CS offer the cobra diff?
Would need a lucky charm to find one up here.
I was just going to go with the Iron 4K setup they have....
Search Ford IRS in e-bay....650 is about the going rate. 3,73 gears are 50-150 bucks.
Old 08-24-2012, 12:54 PM
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The aluminum 8.8 is what they run in the cobra but the aluminum and iron 8.8 diffs are identical. Aluminum weighs a little less and iron is a little stronger.
Old 08-24-2012, 01:12 PM
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Found a few locally.

Last edited by 54inches; 08-24-2012 at 01:31 PM.
Old 08-24-2012, 01:50 PM
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My buddy with my old car found an aluminum 8.8 diff for $150 local and scooped it up. Pretty sure it's just the housing itself though.
Old 08-24-2012, 02:25 PM
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Originally Posted by vmapper
What is the cobra diff good til?

Is 800 rwhp out of the question for this kit?
I honestly don't know the limitation I chose the iron kit with Truetrac... I would think an axle would break before the diff. Seems like its somewhat of a pissing contest between the different carriers when in fact none of us are making huge numbers to compare... Lol all fun and games to me
Old 08-24-2012, 02:42 PM
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Originally Posted by NeverSatisfied02
My buddy with my old car found an aluminum 8.8 diff for $150 local and scooped it up. Pretty sure it's just the housing itself though.
I found the complete unbolted subrame for $200. I should really pick it up...
Old 08-25-2012, 12:53 AM
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Originally Posted by 54inches
Apples to oranges, huh?
Did you actually click on the link before you posted this?
Old 08-25-2012, 04:03 PM
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Yes Mary, but in a similar story I took my Maganavox TV to Europe and it would not plug in and work, so I stopped buying Magnavox TVs.

My point is that just because it does not work or is a bad product in a one application, does not mean that is true for ALL applications. (Not all Germans are Hilter if that is easier for you to understand.)

Take a look at some of the Clutch kits for the CTSV that MANY have had issues with, but work great in F-bodys.

Basically your rationale is wrong.
Old 08-25-2012, 05:11 PM
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spanked a brand new 6sp 5.0 mustang last night.. in mexico. stoplight.. 3k launch. fell right back in love with V.. she squated spun um and hooked up took him 2 car lengths.. he had at least a cat back, prob stock tune but a win is a win on a 7 year old platform
Old 08-25-2012, 05:27 PM
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I betcha he was PISSED and was wondering how you did it! lol Great kill.
Old 08-25-2012, 08:05 PM
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Originally Posted by 54inches
I betcha he was PISSED and was wondering how you did it! lol Great kill.
haha, he wouldn't roll down his window at the next light
Old 08-25-2012, 08:20 PM
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Lol nice
Old 08-26-2012, 02:48 AM
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Hmmm, I don't remember saying i would stop buying from Eaton, in fact im pretty sure I
said I was going with an Eaton Wavetrac.

Also not sure if your tracking that, much of the reason our cars have clutch issues is due to our nearly 2 ton curb weight.

I dont think its a big secret that the true-trac locker has a rough time holding its self together on a manual car with relatively mild power levels.

My car has a 9" rear by the way, which many Fbodys run.
Old 08-26-2012, 04:39 AM
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Torque biasing diffs (True Trac, Quaife, Torsen), with their little gears in them, are not intended to be drag racing diffs.
Old 08-26-2012, 11:00 AM
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You could say the same for our cars.
Old 08-26-2012, 12:31 PM
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Nice shady! I rolled out on a pulley, intake, exhaust 03 cobra the other night on the freeway. Only got him by two lengths or so but his blower was whining its *** off in my passenger window as I was pulling away. Lol it was a white vert with a black top. Turns out after we ran, I was telling my other buddy about it and he knew who the guy was and what was done to his car. I was on motor... Didn't even have the bottle in the car. We went from about a 30-35 roll.

Anyway, as far as carriers go, is there another carrier that's just as strong with less slop? Just wondering if I should be looking into a carrier swap if these things don't like holding up to drag racing. Mines holding strong as of now though. Just has that little bit of annoying slop in it
Old 08-26-2012, 09:12 PM
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Originally Posted by COLEVETTE
You could say the same for our cars.
True enough!

Originally Posted by NeverSatisfied02
Anyway, as far as carriers go, is there another carrier that's just as strong with less slop? Just wondering if I should be looking into a carrier swap if these things don't like holding up to drag racing. Mines holding strong as of now though. Just has that little bit of annoying slop in it
The OEM Ford Traction-Lok, Auburn Pro, Eaton Posi, or a good ol' locker or spool are more drag race friendly. (Those last two are probably way more hard core than most would want for a street car, though.)


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