SilveradoSS500

I just asked for an STS rear end and they didn't know if it would fit! I told them to try but they just started to put the 06 V rear in. Dammit!!! Do you have the BMR anti-wheel hop bar, contact Jeff at Specter and ask him about his Wheel-hop fixer...

Parker TX

iTrader: (16)

My buddy Brian just had the STS rear diff put in his car last week.

SilveradoSS500

And any new's on how its working out? Did he have to buy it, if so: how much? Or was it a warranty job.

Parker TX

iTrader: (16)

Im pretty sure it was a warranty job.

Piaggio Pilot

Just my $0.02. If you do a search, the STS diff has a different gear ratio than the CTS-V.

If it fits, speedo would need calibrating.

Parker TX

iTrader: (16)

Thats right, they come with 3.23s

SilveradoSS500

3.23's? Have you been in the car Parker? If so, how does it drive?

Parker TX

iTrader: (16)

I talked to him earlier today. They installed the STS-Vs housing with the CTS-Vs gears.

SilveradoSS500

and what would that do for you??? That makes it stronger???

Parker TX

iTrader: (16)

I not quite sure, I would guess thats why they tried it.

obZidian

iTrader: (2)

structurally, anything is better than the 05 rear diff. THe 06 diff has a stronger design yet it sill whines...

Oh, i have about 10k miles on mine and i've had it for 5 months, all city driving!!

I haven't seen a comparison of the two diff's but its worth a try. I will say that all of the whining is caused by the defelction of the rear gear pinion angles and the how hot the rear oil gets.

OrangeFRC

Just and FYI for everyone as there was some confusion on this, they put the 06 diff in my car, the way it was explained to me coming from Getrag, is this is the new housing design based off the STS with 3.73's. It is the only replacement rear diff. for the CTSV now, as the older style is long gone. If you get a warranty replacement, this is what you get. I did not get anything speacial or different from what everyone else it getting now.

SilveradoSS500

I'm about to go get my V back with a 06 rear. I asked them about the STS-V Rear end and of course they didnt know ****. I am re-fabricating the BMR brace today and im gonig to re-heat treat the metal and use a different bolt. Ill let yall know how fast i brake this one, i am going to try today. hehe

OrangeFRC

How long before the "whine" started on your 06 diff ? I got mine replaced because my old one was wining pretty damn loud, I hope this new one doesnt develope that. With my new wheel/tire setup I have almost no wheel hop, and I have a BMR pinion support that I might put back on, but it did not stop my first diff. from getting the whine problem, so I dont know that its worth anything.

SilveradoSS500

What the hell is the "whine" ****. How loud is it? Are people only seeing this problem with the 06 diff?

OrangeFRC

my stock 04 diff had the whine, I am on my first 06 diff, and so far so good. The whine on the old one was terrible though, after about 30 mins of driving you could barely hold a conversation in the car....

SilveradoSS500

Huh, Ive never heard it but most of my car has been dynomated and I have a loud stereo! Im taking the V for a little road trip tomarrow so ill listen for it!

lasstss

The 06 diff is the same thing. All they did was load up the outer case with rib stiffeners. I did however buy a pair of 2006 axles. They are 1.5+ " in diameter.

Piaggio Pilot

Marty,

I was thinking about doing the same thing. Any problem with installing them?

Thanks.

obZidian

iTrader: (2)

yep, the 06 diff's whine. It was almost 1k miles into the new diff that it started to whine.

Silverado: THe whining is the rar diff making a gear whine like a trans gear into the rev band and off the throttle. OH, just like reverse!! That kind of whine but much deeper in tone.

ITs annoying as hell when you know its there...trust me, dont look for it!!!