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V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6) Driveshafts | Differentials | Gears | Rearends | Clutch | Shifters

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Old 03-26-2009, 11:57 AM   #26
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Guys/gals, where are you going to get 4.10s for the factory rear?
aftermarket.
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Old 03-26-2009, 12:20 PM   #27
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Originally Posted by CamaroSpike23 View Post
aftermarket.
Ok, that's what I thought you'd say.


I am 99.9% sure that the Camaro rear is the same as the G8 rear. If that is so, there is NO aftermarket ring and pinion out there. Not in the US and not in Aus.

Your choices are 2.92, 3.27, 3.45, 3.70 and that's it. For now.
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Old 03-26-2009, 12:56 PM   #28
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I would use 3.90s if somebody could tell me where the heck to find the right ones to install in the Camaro!!!!
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Old 03-26-2009, 01:00 PM   #29
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Not really. How often would you need to be in 6th gear with the stock gear ratio? Almost never!

I used 6th gear in my 4th gen when it had 3.42's as low as 45mph as long as I was just cruising.
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Old 03-26-2009, 01:02 PM   #30
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Originally Posted by GeorgeInNePa View Post
Ok, that's what I thought you'd say.


I am 99.9% sure that the Camaro rear is the same as the G8 rear. If that is so, there is NO aftermarket ring and pinion out there. Not in the US and not in Aus.

Your choices are 2.92, 3.27, 3.45, 3.90 and that's it. For now.
3.70's also, that's what comes in the G8 GXP M6's.
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Old 03-26-2009, 01:16 PM   #31
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I used 6th gear in my 4th gen when it has 3.42's as low as 45mph as long as I was just cruising.
You will now be referred to as "bog boy". Seriously though, your 4th gen didn't have a .57 6th gear!
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Old 03-26-2009, 01:17 PM   #32
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3.70's also, that's what comes in the G8 GXP M6's.
D'oh!!!

I meant to type 3.70, but after thinking about 3.90s, that's what I typed instead.
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Old 03-26-2009, 01:23 PM   #33
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You will now be referred to as "bog boy". Seriously though, your 4th gen didn't have a .57 6th gear!
True. It had a .50 6th gear.
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Old 03-26-2009, 02:25 PM   #34
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The calculator that the OP used has a conversion factor of .965 for the tire height. Meaning whatever the tire height is calculated out to be, it multiplies that times .965, which makes the height used in the calculations shorter. It does this to account for various factors such as the weight of the car deforming the tire slightly, which makes the actual height shorter. This calculator will probably provide you a more accurate answer than others that do not use this conversion factor. Notice this one says your top speed in 3rd is 110.1 mph. Also notice how every single test so far has put the trap speed in the 1/4 at 110-111. I've never seen so many tests on one car with such close numbers. I'm assuming that's because at about 111, the rev limiter kicks in, and the testers are running it straight to the limiter to avoid shifting into 4th, which would make the 1/4 times slower. So yeah, raisng the rev limiter to about 6900 would probably net you some faster times/higher trap speeds.
I don't believe the deformation of the tire from the weight is that much of a factor at all. I've verified the normal calculators without that variable and have verified their accuracy to less than .5 mph @ 75 mph using datalogs and my radar gun.
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Old 03-26-2009, 08:02 PM   #35
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I'm thinking 3.73-3.90 range, I don't wanna lose my top end. Plus 4.10 or more and other work will be required...
is that final drive ratio?
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Old 03-28-2009, 07:29 PM   #36
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Quote:
Originally Posted by GeorgeInNePa View Post
Ok, that's what I thought you'd say.


I am 99.9% sure that the Camaro rear is the same as the G8 rear. If that is so, there is NO aftermarket ring and pinion out there. Not in the US and not in Aus.

Your choices are 2.92, 3.27, 3.45, 3.70 and that's it. For now.
Something tells me that the aftermarket will find a way to accommodate the Camaro owners rather quickly.
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Old 03-28-2009, 09:37 PM   #37
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yeah...the aftermarket is going to explode with part's for this car..i mean come on it's the new camaro. Im sure they will be making alo't bigger then stock in no time.
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Old 03-29-2009, 08:32 AM   #38
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Originally Posted by GeorgeInNePa View Post
I am 99.9% sure that the Camaro rear is the same as the G8 rear. If that is so, there is NO aftermarket ring and pinion out there. Not in the US and not in Aus.
I read somewhere on here that the rears are in fact different. Not sure, but I know I read it. I also inquired with a few aftermarket "rear" guys and they said they were looking into it so I'd be willing to bet that stuff is coming.

As for my choice, I would go with a 3.90 in a heartbeat if they become available. With that 28.68" tall tire, and the 5th & 6th gear, It will still cruise nicely at 80mph and I plan on FI. If I were staying NA, I wouldnt hesitate to go with 4.10s or 4.30s though. But in the end, if all we have available is 3.70, I'll still do it
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Old 03-31-2009, 08:20 PM   #39
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Some food for thought for those of you who have not done a gear change before. I did 4.10's on my '99 SS M6. The performance improvement was noticable and fun. However, after living with it for awhile, I am not sure I will do it again. First, I was lucky and never had gear whine from my car, but at LEAST half the people I knew at the time who changed gears did. Second, I just got sick of shifting it so much! The change in rear end gearing causes you to move through each gear faster, and during normal driving, means that you have to shift more often. Don't get me wrong, I love rowing my own gears (all of my Camaros have had manual transmissions) but it was kind of irritating.

I will drive the car for awhile before making any changes, but if I do change them, I won't go for the more extreme gear ratios...maybe 3.73 or 3.90.
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Old 04-02-2009, 09:26 AM   #40
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Something tells me that the aftermarket will find a way to accommodate the Camaro owners rather quickly.
Keep in mind that the G8 (Commodore VE, Zeta) has been sold in Aus since '06. There are a lot of them out there. There are no companies making gears for them.

This is the same (essentially) chassis.

Just don't be surprised if there is a biiiiggggg lag in aftermarket support for certain items.


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Old 04-02-2009, 09:28 AM   #41
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I read somewhere on here that the rears are in fact different. Not sure, but I know I read it. I also inquired with a few aftermarket "rear" guys and they said they were looking into it so I'd be willing to bet that stuff is coming.

As for my choice, I would go with a 3.90 in a heartbeat if they become available. With that 28.68" tall tire, and the 5th & 6th gear, It will still cruise nicely at 80mph and I plan on FI. If I were staying NA, I wouldnt hesitate to go with 4.10s or 4.30s though. But in the end, if all we have available is 3.70, I'll still do it
Pedders is listing the same diff bushings for the Camaro as the G8.

Pedders is working with GM Racing on their Camaro.


I would love some aftermarket gear choices.
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Old 04-02-2009, 09:57 AM   #42
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You are correct in saying the G8's have been around since 06, but they dont have the following that the Camaro does. With the return of the Camaro the aftermarket is already blowing up for the car and its not event released to public yet. I think the G8 crowd is about to recieve alot of upgrades due to the Camaro.
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Old 04-02-2009, 10:46 AM   #43
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You are correct in saying the G8's have been around since 06, but they dont have the following that the Camaro does. With the return of the Camaro the aftermarket is already blowing up for the car and its not event released to public yet. I think the G8 crowd is about to recieve alot of upgrades due to the Camaro.

Australian sales

Year Units sold
2006 (October–December) 15,581
2007 57,306
2008 51,093
2009 (January–February) 6,435
Total 130,415


Plus 15002 in North America for 2008.

I hope you are correct.
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Old 04-02-2009, 10:48 AM   #44
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Quote:
Originally Posted by GeorgeInNePa View Post
Australian sales

Year Units sold
2006 (October–December) 15,581
2007 57,306
2008 51,093
2009 (January–February) 6,435
Total 130,415


Plus 15002 in North America for 2008.

I hope you are correct.


OFF TOPIC ALERT!!!!
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Old 04-02-2009, 03:17 PM   #45
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Quote:
Originally Posted by GeorgeInNePa View Post
Australian sales

Year Units sold
2006 (October–December) 15,581
2007 57,306
2008 51,093
2009 (January–February) 6,435
Total 130,415


Plus 15002 in North America for 2008.

I hope you are correct.

130k over 4 years..... GM is wanting to sell over half that every year with the camaro. im sure once they get into the hands of some companies, we'll see some options. honestly, I wanna see how far the stock rear can go first.
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Old 04-02-2009, 03:22 PM   #46
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Going higher in ratio also lessens the strength of the gears too, if I'm not mistaken. I thought there'd be more surface area, but from what I've read, the teeth, themselves, are actually smaller to get the higher tooth count. Still, I think I'd try at least a 3.70 and consider a 4.10 as long as there were no noise or strength issues.
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Old 04-02-2009, 03:44 PM   #47
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Anybody know what kind of quarter mile times you would get with a 4.10 rear?
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Old 04-02-2009, 04:52 PM   #48
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I don't know why people are so worried about the noise, most of the time it's just a very low humming sound at worst. Adding stiffer bushings will have a greater effect bringing sound into the cabin.
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Old 04-02-2009, 05:17 PM   #49
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Going higher in ratio also lessens the strength of the gears too, if I'm not mistaken. I thought there'd be more surface area, but from what I've read, the teeth, themselves, are actually smaller to get the higher tooth count. Still, I think I'd try at least a 3.70 and consider a 4.10 as long as there were no noise or strength issues.
while that is true, you also keep in mind the overall size of the ring gear itself. this aint no 7.5" pos like we had in the 4th gens.


Quote:
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I don't know why people are so worried about the noise, most of the time it's just a very low humming sound at worst. Adding stiffer bushings will have a greater effect bringing sound into the cabin.


most often times the noise is because they are installed slightly wrong and not aligned properly.
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Old 04-02-2009, 05:22 PM   #50
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while that is true, you also keep in mind the overall size of the ring gear itself. this aint no 7.5" pos like we had in the 4th gens.






most often times the noise is because they are installed slightly wrong and not aligned properly.
What the heck size is the rear anyways? I can't remember ever reading. I hope it's at least 8.5".

Yeah - I think that's a sign the backlash is not right. I know my brother's 3.73s made a little more noise, but it wasn't bad; well, that was until he blew it while we were racing at like 100 MPH at the track. It was a good think that rear end didn't lock-up at the big end, because it was sure making a lot of noise! I could hear it over our open cutouts!
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