White SS

iTrader: (1)

Does any one sell different ratios ex 4.10?

nikon

iTrader: (2)

I think the gearset from the SRX is a 3.93....not sure though.

CTSV_510

iTrader: (1)

White SS

iTrader: (1)

SRX? Who is that?

504ctsV

It's the first generation cts based crossover suv

itsslow98

iTrader: (18)

has anyone ever replaced the gears in a V? heard it was a waste of time and money.

JJSimon904

iTrader: (8)

I talked to the guys at Futral recently and they said they can get ahold of very strong rears with your choice of gears for a decent price.

504ctsV

Figured the 3.73's were good enough... Especially since others swap whatever they have to have them

CTSV_510

iTrader: (1)

They said that did they? Have they done one before?

I'm just a bit skeptical because there have been tons of people that talk to a shop that says they can replace their rear no problem. Then when it comes down to it, they can't.

madmaro00

iTrader: (6)

The dealer was originally going to attempt to repair mine because of the current economic situation, but no dealer in WA state has the right tools for the job. So the dealer went ahead and "upgraded" mine to the '06/07 version. Beware of shops that say that they can work on them, if dealers don't have the tools it's not likely a shop will.

JJSimon904

iTrader: (8)

I don't know if they have or not. They are familiar with the car since a few have gone through their shop of course. I guess if I blow this rear outside of warranty, yall will be the first to know who replaces it for me with something stronger. Futral is 5-10 min from me and Thunder Racing is in the next town over...I think between the two of them, someone can get it done.

madmaro00

iTrader: (6)

Experimenting = $$$$$$$ and usually not a good job (hence all first gen issues from any manufacturer).

I don't know much about those shops but that has been my experience in the past.

JJSimon904

iTrader: (8)

Both are the biggest name fbody/vette shops anywhere near here and have been around for many years so I trust them.

Rey Kirkman

I replaced my 3.73 with a 3.42 from a CTS. Basically, the ring and pinon gears from the SRX, CTS, and CTS-V interchange. You have the choices of 3.9, 3.42, or 3.23 in addition to your stock 3.73. The CTS-V limited slip differential housing also fits these ring and pinion sets.
My work was done by TPIS, who has a set of factory-issue supposedly dealer-only tools, and the shop manual. It is a bit tricky because you need to heat the throat of the rear gear carrier in oder to pull the pinion gear out. By the same token one should freeze the pinion and reheat the carrier to install the pinion. We checked the gear fitting/lap and found it just perfect. Getrag the makere of the rear does a very nice, very precise machining of the assembly parts, which I think in most cases probably will not require shims.
I think the 3.42 is a good gear for my driving, which is mostly highway cruise. Gas mileage is up maybe 1mpg.

BacDoc

iTrader: (2)

I imagine the 3.73 is what really makes this car fun to drive, albeit with lots of shifting. But 4.10's? Obama is gonna show up at your house in a smart car and kick you in the junk!

504ctsV

Don't forget madman can do it... Isn't he in baton rouge

JJSimon904

iTrader: (8)

Holy crap! I had no idea. They are in Prairieville which is the next town south of Baton Rouge. Futral is an "authorized retailer and installer" for Madman as well..makes sense now..haha. I might have to drop in on them one day on my lunch break.

EDIT: Isn't Madman's setup like $7k?

itsslow98

iTrader: (18)

yep like 7500 which is insane, since you can get a bulletproof 9" for an fbody or mustang for like 3k to your door. very very sad

504ctsV

Yea it's insane but for those of us who like to handle and a smooth ride it retains IRS. Wonder if it'll be cheaper as time progresses

jerrad

iTrader: (5)

Don't think so. They have to take your car and do the fab work in house. It's not a simple swap.