A6 3.91 gears or 1LE differential - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

954camaro · 01-08-2014, 06:18 PM

Oooo sorry didn't catch that! So anyone know what would be some really good suspension mods to help stop the spinning?

954camaro · 01-10-2014, 01:29 PM

Bump!

Baltimorejohn1 · 07-30-2014, 07:37 PM

INCREASED ACCELERATION
CAMARO 1LE 3.91 GEAR KIT
P/N 22756880 / On-Sale Date: Late Q3 2013/Early Q4 2014

If you want the ultimate acceleration off the line, look no further than this shorter gear ratio. This ring and pinion comes out of the 1LE, and the higher numeric ratio gives your fifth-gen Camaro a dramatic increase in acceleration. The drive gear increases effective rear-wheel torque multiplication by 13 percent in a manual-transmission Camaro SS, and a whopping 20 percent in automatic cars.
The complete 3.91 Performance Gear Kit (P/N 19301504) includes the ring and pinion, all hardware, shims, gaskets, oil additive, and instructions (included, not shown). The 3.91 gear installation requires recalibration, which is installed by a GM dealer. Application for a CARB E.O. has been made at the time of this writing.

http://www.chevrolet.com/performance...3/issue07.html

Snidely Whiplash · 10-01-2014, 08:24 PM

Quote:

Originally Posted by 954camaro

Alright I get that now chase but my problem still remains I want my chevy warranty still intact as much as possible and they don't have 3.73 gears so the only choice I got is 3.91 gears.

Sure they have 3.73 gears - ya' just gotta pony up the cash for a ZL1 diff, axles, driveshaft, etc. package available from GM performance.

Snidely Whiplash · 10-02-2014, 12:52 AM

Quote:

Originally Posted by jbrown13

John, I feel your pain. First gear is so quick with the 6L80E with a 3.91 rear gear you stand the chance of running out of first before the 60' timing lights. My logs from yesterday show I was in first gear about 1.95 seconds, and my sixty was 1.637. More power and torque and I could see the car shifting before or at the 60' lights.

A quick mental calculation has me thinking a 1.5" or so taller tire would put your final drive ratio closer to 3.73. Dunno if you have the room 'cause I dunno what height tire you're running now.

In the old days, we would run 10x27 tires at the 1/8 mile tracks and 10x30 tires at the 1/4 mile tracks. It proved a great combination for a mild big block with 4.88 gears behind a turbo 400.

JS440 · 09-12-2016, 11:43 AM

I read for days in attempt to find someone that had real world experiences in 3.91's in an a6 l99 car.. most recommended against it with no further information to back it up.
I run my car 1/4 mile at street legal open track days.
Bone stock I was averaging 13.8's at 100-101mph with stock 3.27 gears
I decided to install the gm 3.91 kit against everyones advise. most told me it wouldnt hook and would loose top speed in the quarter mile.
After the install. The GM dealer even reprograms your speedo free of charge!
I brought the car to the track with my new 3.91 gear set installed. Everything is was stock
First Pass was a 13.28 @ 105.9 on a 90* humid day.
Car was a half second quicker with an increased trap speed of almost 5mph.
Hands down the best bang for your buck mod.

01-08-2014, 06:18 PM	#29
954camaro Drives: Camaro SS/RS inferno red interior Join Date: Mar 2012 Location: Pompano Beach FL Posts: 817 View My Garage	Oooo sorry didn't catch that! So anyone know what would be some really good suspension mods to help stop the spinning? __________________ SoFlo Muscle Car Group Miami/Broward

01-10-2014, 01:29 PM	#30
954camaro Drives: Camaro SS/RS inferno red interior Join Date: Mar 2012 Location: Pompano Beach FL Posts: 817 View My Garage	Bump! __________________ SoFlo Muscle Car Group Miami/Broward

07-30-2014, 07:37 PM	#31
Baltimorejohn1 Drives: Camaro 2SS Join Date: Apr 2011 Location: DC Metro Posts: 1,257 View My Garage	INCREASED ACCELERATION CAMARO 1LE 3.91 GEAR KIT P/N 22756880 / On-Sale Date: Late Q3 2013/Early Q4 2014 If you want the ultimate acceleration off the line, look no further than this shorter gear ratio. This ring and pinion comes out of the 1LE, and the higher numeric ratio gives your fifth-gen Camaro a dramatic increase in acceleration. The drive gear increases effective rear-wheel torque multiplication by 13 percent in a manual-transmission Camaro SS, and a whopping 20 percent in automatic cars. The complete 3.91 Performance Gear Kit (P/N 19301504) includes the ring and pinion, all hardware, shims, gaskets, oil additive, and instructions (included, not shown). The 3.91 gear installation requires recalibration, which is installed by a GM dealer. Application for a CARB E.O. has been made at the time of this writing. http://www.chevrolet.com/performance...3/issue07.html __________________ K&N TYPHOON http://www.youtube.com/user/Baltimorejohn1

09-12-2016, 11:43 AM	#34
JS440 Drives: Black 2014 ZL1 m6 coupe Join Date: Nov 2015 Location: Minnesota Posts: 10	I read for days in attempt to find someone that had real world experiences in 3.91's in an a6 l99 car.. most recommended against it with no further information to back it up. I run my car 1/4 mile at street legal open track days. Bone stock I was averaging 13.8's at 100-101mph with stock 3.27 gears I decided to install the gm 3.91 kit against everyones advise. most told me it wouldnt hook and would loose top speed in the quarter mile. After the install. The GM dealer even reprograms your speedo free of charge! I brought the car to the track with my new 3.91 gear set installed. Everything is was stock First Pass was a 13.28 @ 105.9 on a 90* humid day. Car was a half second quicker with an increased trap speed of almost 5mph. Hands down the best bang for your buck mod.