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

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Old 03-27-2012, 09:01 AM   #1
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1LE gears and half shafts?

You guys think we could swap? ( I am hoping )That would be awesome... could be a better budget priced upgrade. Hell at lest the axles would be great, the price for axles is crazy! Also cant believe this will not be the Z 28... this 1LE is the car I figured for that.
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Old 03-27-2012, 09:04 AM   #2
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Not a direct swap. Waiting for someone to swap the whole pumpkin and see if it works. Would love to have the 3.73 gears, iron center, bigger axles, and cooler for autocross abuse.
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Old 03-27-2012, 09:45 AM   #3
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The 1LE actually comes with 3.90s but it did not state that it from the ZL1... I am actaully hoping it is the same rear as the SS just with the 3.90s and better axles!
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Old 03-30-2012, 02:42 PM   #4
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I am interested as well, if you could get the ring and pinion straight from the GM parts desk and have them put it in maybe warranty could be maintained
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Old 03-30-2012, 03:00 PM   #5
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The gear ratios in the transmission are different on the 1LE as compared to the SS. I am sure you can put in a 3.91 final drive, but you will not end up with the same gearing as the SS. In the official 2013 thread I did the calculations for the ratios and speeds. So I guess it depends if you want exactly the same gearing or just the 3.91 for all around lower gearing.
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Old 03-30-2012, 04:04 PM   #6
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Its a 3:91 ratio, it uses the same housing as the regular SS so it is interchangable. you computor would also need to be reprogramed for the different gear ratio. If a GM dealer does the install using new GM parts you get to keep your warranty.

Rick @ Midway Chevrolet
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Old 03-30-2012, 05:59 PM   #7
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These must be the same American Axle gears that is currently exclusive to LPE. I sure hope the GMPP parts price will be much better. According to various threads, re-program of the speedo won't be required for our LS3s! Woo-Hoo

I sure hope the forum vendors can provide the 1LE gears and axles once they get a part number for them!
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Old 03-30-2012, 08:08 PM   #8
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Originally Posted by urr2slo View Post
Its a 3:91 ratio, it uses the same housing as the regular SS so it is interchangable. you computor would also need to be reprogramed for the different gear ratio. If a GM dealer does the install using new GM parts you get to keep your warranty.

Rick @ Midway Chevrolet
This is very good news! Rick do you know when the 3.91 gears will be available?
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Old 03-30-2012, 08:47 PM   #9
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I'm also interested in the gears
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Old 03-30-2012, 08:59 PM   #10
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It looks like Lingenfelter has the 3.91 Ring & Pinion set for $799, they're manufactured by American Axle & they are the makers of the OE stuff for the Camaros....I bet these are the same gears as the 1LE

http://www.lingenfelter.com/mm5/merc...gory_Code=C366
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Old 03-31-2012, 08:02 AM   #11
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I'm waiting on prices for these too.
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Old 04-01-2012, 01:35 PM   #12
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Originally Posted by Bad70supreme View Post
The 1LE actually comes with 3.90s but it did not state that it from the ZL1... I am actaully hoping it is the same rear as the SS just with the 3.90s and better axles!
I'm hoping for this too.
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Old 04-06-2012, 07:50 AM   #13
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Any updates?
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Old 04-06-2012, 08:48 AM   #14
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[QUOTE=Avalnch;47314 According to various threads, re-program of the speedo won't be required for our LS3s! Woo-Hoo[/QUOTE]


Not sure how this is possible??? The factory LS3 has 3.45 gears, and your saying you can install 3.91s and not worry about recal. the computer, makes no sense.

I installed 3.73s into my L99 and had to recalibrate for correct speedo readings, they ungraded to 3.91s and had to recal again.......

Not required for performance I guess but if you want your speedo to read accurate highway speeds, it will need to be recalibrated.
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Old 04-06-2012, 09:55 AM   #15
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The ls3 and l99 read speed from different locations.
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Old 04-17-2012, 10:26 PM   #16
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Bump.
Any info from the online GM Dealers??
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Old 04-18-2012, 08:04 AM   #17
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This is great news, I hope the GM price on these are much better then the aftermarket price! Does anyone know what the stock gear set cost from GM? It should be around the same no...
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Old 04-18-2012, 09:10 AM   #18
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I can tell you from experience if you change the rear diff gears on an LS3 car you will need to have the speedometer re-calibrated. Right now a dealer cannot do this so you need to have it done with one of the tuners such as EFI Live, HP Tuners, etc. Once the 1LE cars are out I would suspect the dealer may be able to recalibrate the speedometer reading on an older SS car with 3.45's to 3.91's.
Ed M.
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Old 04-19-2012, 12:24 PM   #19
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Quote:
Originally Posted by flht99b View Post
I can tell you from experience if you change the rear diff gears on an LS3 car you will need to have the speedometer re-calibrated. Right now a dealer cannot do this so you need to have it done with one of the tuners such as EFI Live, HP Tuners, etc. Once the 1LE cars are out I would suspect the dealer may be able to recalibrate the speedometer reading on an older SS car with 3.45's to 3.91's.
Ed M.

You can get the LE1 gears now LPE 3.91s, made by American Axle who is the OE supplier the gears for the SS. With a Ring & Pinion swap to 3.70s or 3.91s on a manual car ECM calibration is not needed for the speedo, only on automatics is it needed.
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Old 04-19-2012, 01:57 PM   #20
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Originally Posted by Kronix View Post
You can get the LE1 gears now LPE 3.91s, made by American Axle who is the OE supplier the gears for the SS. With a Ring & Pinion swap to 3.70s or 3.91s on a manual car ECM calibration is not needed for the speedo, only on automatics is it needed.
Wrong.
Swap the gears in an M6 and see what happens.
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Old 04-19-2012, 02:04 PM   #21
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Wrong.
Swap the gears in an M6 and see what happens.
Ed M.

Taken directly from Jannetty Racing Website

http://jreperformanceparts.com/linge...-91-ratio.html



Product Description
Lingenfelter offers a premium ring & pinion gear set for the 2010-2011 Camaro SS that are designed and manufactured to meet OE specifications to ensure long life and quiet operation. This manufacturing process combined with a professional installation will insure quiet factory like operation of your differential unlike less expensive gears sets that often can cause gear whine even if they are installed correctly.

LPE Ring & Pinion Specifications:
- Designed to meet original equipment specifications
- Manufactured by American Axle the original equipment gear supplier for Camaro SS
- Gear material is a modified SAE 4320 steel alloy
- 10 tooth pinion gear, 37 tooth ring gear design
- Gear sets fit both manual and automatic transmission Camaro SS differentials
- Gears sets are 100% single flank rolled to assure acceptable NVH characteristics

LPE Ring & Pinion Details:
The 3.70 ratio ring and pinion provides a 7% increase in effective rear wheel torque multiplication compared to the factory 3.45 ring & pinion (MT) and a 13% increase in effective rear wheel torque multiplication compared to the factory 3.27 ring & pinion that is found on the AT equipped Camaro SS.

When cruising at 60 mph in 6th gear, a manual transmission vehicle will see an approximate increase in engine speed of 100 rpm while automatic transmission vehicles will see an approximate increase of 220 rpm

Manual transmission vehicles do not require ECM calibration changes to correct the speedometer. Automatic vehicles will require ECM calibration changes to correct the speedometer.

Available as a ring and pinion only or as a complete differential assembly. The complete differential assembly is available as a complete new assembly or built from the customerís core.

The V8 differential can be adapted to the V6 vehicles but it requires new half shafts and a new driveshaft.



Only repeating what I've both read & been told
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Old 04-20-2012, 05:01 AM   #22
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Quote:
Originally Posted by Kronix View Post
Taken directly from Jannetty Racing Website

http://jreperformanceparts.com/linge...-91-ratio.html



Product Description
Lingenfelter offers a premium ring & pinion gear set for the 2010-2011 Camaro SS that are designed and manufactured to meet OE specifications to ensure long life and quiet operation. This manufacturing process combined with a professional installation will insure quiet factory like operation of your differential unlike less expensive gears sets that often can cause gear whine even if they are installed correctly.

LPE Ring & Pinion Specifications:
- Designed to meet original equipment specifications
- Manufactured by American Axle the original equipment gear supplier for Camaro SS
- Gear material is a modified SAE 4320 steel alloy
- 10 tooth pinion gear, 37 tooth ring gear design
- Gear sets fit both manual and automatic transmission Camaro SS differentials
- Gears sets are 100% single flank rolled to assure acceptable NVH characteristics

LPE Ring & Pinion Details:
The 3.70 ratio ring and pinion provides a 7% increase in effective rear wheel torque multiplication compared to the factory 3.45 ring & pinion (MT) and a 13% increase in effective rear wheel torque multiplication compared to the factory 3.27 ring & pinion that is found on the AT equipped Camaro SS.

When cruising at 60 mph in 6th gear, a manual transmission vehicle will see an approximate increase in engine speed of 100 rpm while automatic transmission vehicles will see an approximate increase of 220 rpm

Manual transmission vehicles do not require ECM calibration changes to correct the speedometer. Automatic vehicles will require ECM calibration changes to correct the speedometer.

Available as a ring and pinion only or as a complete differential assembly. The complete differential assembly is available as a complete new assembly or built from the customerís core.

The V8 differential can be adapted to the V6 vehicles but it requires new half shafts and a new driveshaft.



Only repeating what I've both read & been told
Lingenfelter's site says the same thing. It's wrong. My speed/odometer was off about 3mph when I went from 3.45's to 3.70's. You change gears in a LS3 or L99 Camaro, you need to have it tuned to correct the speed/odometer.
Ed M.
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Old 04-20-2012, 07:01 AM   #23
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Lingenfelter's site says the same thing. It's wrong. My speed/odometer was off about 3mph when I went from 3.45's to 3.70's. You change gears in a LS3 or L99 Camaro, you need to have it tuned to correct the speed/odometer.
Ed M.

With the three different ratios I've had, a recal was always needed. My speedo was way off just recently when I went from the 3.70 to the 4.57.
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Old 04-24-2012, 04:36 PM   #24
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This is very good news! Rick do you know when the 3.91 gears will be available?
GM has not released the PN yet, at least that I can find. I'm sure as production starts of the '13 1LE the parts and prices will start showing up all over this forum.
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Old 04-24-2012, 06:18 PM   #25
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GM has not released the PN yet, at least that I can find. I'm sure as production starts of the '13 1LE the parts and prices will start showing up all over this forum.
Lingenfelter has both 3.91s & 3.70s made by American Axle who is the OE supplier for SS gears, listed at $799.99 & $599.99 respectively, and that's their discounted price. So I'm sure GM will be more $
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