question about new gears
Thread Starter
Teching In
Joined: Aug 2006
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question about new gears I went into a local shop today and asked about getting some 3.73 for my A4 today and the guy at the shop started to tell me that since my car currently has 2.73's(stock) that i will need an all new carrier in order for the 3.73's to fit and that it would cost around 1100 after parts and labor
i just wanted to see if he was being 100% honest and not just trying to get me to spend more money cause this was the first i have heard about swapping the carrier
i just wanted to see if he was being 100% honest and not just trying to get me to spend more money cause this was the first i have heard about swapping the carrier
2.73's use the 2 series carrier, the 3.73's would be used in the 3 series ... 1,100 is wayyyyy to much! find a 10 bolt for sale that was from a 3.23 geared a4 ... they will have the right carrier you are looking for.
Thread Starter
Teching In
Joined: Aug 2006
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if i came across a 10 bolt out of an old m6 i could just use the carrier out of that since they come with 3.42 right?
and ya i thought that price was high the guy seemed like he didnt even want me to get them done cause after he told me the price he told me to just say no to him even swapping them. So i dont know what is up with that but ill try to find an old 10 bolt with the right kind of carrier and just buy it used
and ya i thought that price was high the guy seemed like he didnt even want me to get them done cause after he told me the price he told me to just say no to him even swapping them. So i dont know what is up with that but ill try to find an old 10 bolt with the right kind of carrier and just buy it used
If you are buying new gears the ones for the 2 series carrier are only like $20 more than the standard ones(about $195). so if your posi is in good shape, gears and an install kit is all you need to buy. Labor for setting up a rearend in ac car shouldnt be more than $250
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The one out of an M6 is a Series 3. That will work good for a set of 3.73's.
If you want to get a set of GM gears for cheap, this is what I did. Look for an S10 Truck or Blazer in the junkyards, and look for a code in the glove box that says GT4. You get the rear axle out, get the Ring and Pinion Gears, and there is your 3.73's. They are for a Series 3 Carrier though.
If you want to get a set of GM gears for cheap, this is what I did. Look for an S10 Truck or Blazer in the junkyards, and look for a code in the glove box that says GT4. You get the rear axle out, get the Ring and Pinion Gears, and there is your 3.73's. They are for a Series 3 Carrier though.
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I just went through this....you can get 3.73s for either carrier...no problem. Just order it for the right series carrier. I just put 4.10s in my factory 2.73 car. The gears for a series 2 are like 15 bucks more. No big hassles or anything. Just order ones for a series 2 and enjoy. 
TECH Resident
Joined: Dec 2005
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From: In a house
yeah what guy above me said and just to clerify...
*They make 3.73's for 2 series carriers. No need to buy a new rear end or carrier.
*Dont pay more then 600 for a install, I got quoted at 500 dollars for a gear install on a 97 Z28 from a speed shop.
also what truck is it? how many bolt rear end and what size axel?
*They make 3.73's for 2 series carriers. No need to buy a new rear end or carrier.
*Dont pay more then 600 for a install, I got quoted at 500 dollars for a gear install on a 97 Z28 from a speed shop.
also what truck is it? how many bolt rear end and what size axel?
I bought my own gears and my guy put them in. Labor cost me $300 but that included setup...break in...and synthetic lube and GM Lim Slip Additive plus I replaced all my bearings. So I wouldnt pay much more than like $500 for the whole deal.(Gears and Install without bearings replaced)
Is it really all that hard to change the gears in your garage with the proper tools? I wouldn't see it as being that difficult, just tedious. Sure beats spending another $500
I have done it..and if you know what to measure and have the dial indicator for pinion depth and backlash yea it can be done. HOWEVER .. Its a pain to do laying under the car. I would almost rather pull the whole rear out from under the car and bench it first. Its just one of those things that unless you are %100 percent you can get it done... dont do it. Also, even having my guy put mine in (who has setup numerous other rears including many race cars) they are whiny. Richmond told us that its normal on the 7.5's in the FBodys especially with 3.73 or 4.10s ... they are almost impossible to setup silent. Even more reason to leave it for the experts.
Staging Lane
Joined: Feb 2006
Posts: 60
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There are some challenges and specific tools required.
Finding pinion depth is rather difficult without the right tools.
Also the need to crush the crush collar, best done with the car on the lift.
You will need access to a press for removal of bearings during some installs.
I finally witnessed a set of Richmonds that were setup without any noise(10 bolt), I prefer the Motive gears.
Finding pinion depth is rather difficult without the right tools.
Also the need to crush the crush collar, best done with the car on the lift.
You will need access to a press for removal of bearings during some installs.
I finally witnessed a set of Richmonds that were setup without any noise(10 bolt), I prefer the Motive gears.
Originally Posted by 88irocarmy
There are some challenges and specific tools required.
Finding pinion depth is rather difficult without the right tools.
Also the need to crush the crush collar, best done with the car on the lift.
You will need access to a press for removal of bearings during some installs.
I finally witnessed a set of Richmonds that were setup without any noise(10 bolt), I prefer the Motive gears.
Finding pinion depth is rather difficult without the right tools.
Also the need to crush the crush collar, best done with the car on the lift.
You will need access to a press for removal of bearings during some installs.
I finally witnessed a set of Richmonds that were setup without any noise(10 bolt), I prefer the Motive gears.
I have a 3.42 rear end out of a 96 m6 I would be willing to sell if you are interested and close to ohio. I traded a roll cage for it but have no use for it now because i just had my rear end replaced by my insurance company. So i have an extra. It is a complete rear end axels and all. I was just gonna use the posi and gears.
Originally Posted by carzman5678
If done right, there will be no whine.
