Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Bigwormgraphix
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)

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

Reply
 
Thread Tools
Old 06-27-2014, 02:58 PM   #1
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Auto's with 3.91's?

I know the low end on the streets is amazing but how does it feel on Highway when cruising? How does it feel when your cruising at 65mph or so and you punch it to make a pass or just need to show a Mustang who's boss?

Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 06-27-2014, 03:11 PM   #2
Pro Stock John
Writer / Blogger
 
Pro Stock John's Avatar
 
Drives: 2010 SS / 1951 Mercury
Join Date: May 2009
Location: Chicago, IL
Posts: 4,493
Feels great (but I have a 3200 stall too).
__________________
PROJECT HEAVY CHEVY: 2010 Camaro SS/RS |1SS | L99 | CGM
13.15@106 1.95 | Stock
12.06@113 1.70 | Bolt-Ons
Mods: GPI Tune | Bo White PTP | Kooks Headers | Hooker Maxflows | Circle D 3200 | New Era OTR | RCR Intake Manifold | Powerbond UDP

LSX Record List: http://motorhed.com/xf/threads/lsx-r...the-list.6022/
Pro Stock John is offline   Reply With Quote
Old 06-27-2014, 03:13 PM   #3
Apex Motorsports

 
Apex Motorsports's Avatar
 
Drives: 2000 Camaro SS
Join Date: Feb 2010
Location: Louisville, Ky.
Posts: 22,947
When you change your rear end gears the impact is exactly the same all the way across the entire RPM regardless of gear. Whether it is 0-60 or 60-140 your car will have a torque advantage with a lower set of rear end gears. On the automatic cars with 3.91s you are looking at an equivalent torque gain of approximately 20% or 82 lb.-ft. of torque. You are definitely going to know it is there.
__________________
Apex Motorsports is offline   Reply With Quote
Old 06-27-2014, 03:31 PM   #4
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Quote:
Originally Posted by Pro Stock John View Post
Feels great (but I have a 3200 stall too).
I bet it does.





Quote:
Originally Posted by Apex Chase View Post
When you change your rear end gears the impact is exactly the same all the way across the entire RPM regardless of gear. Whether it is 0-60 or 60-140 your car will have a torque advantage with a lower set of rear end gears. On the automatic cars with 3.91s you are looking at an equivalent torque gain of approximately 20% or 82 lb.-ft. of torque. You are definitely going to know it is there.
Thanks for the detailed information.


Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 06-27-2014, 03:53 PM   #5
954camaro
 
Drives: Camaro SS/RS inferno red interior
Join Date: Mar 2012
Location: Ft.Lauderdale FL
Posts: 611
Ya you can really feel it!!! it's awesome! However, I have been told that 3.91 will show your torque to be actually lower on a dyno compared to if you were to have the stock 3.27 in which I find weird. Do not be fooled by the numbers though you got a lot more torque!
__________________
VMAX TB, Borla Catback Exhaust, Cold Air Inductions CAI, Racing scoop,ZL1 grille, Nightowl JDP upgrade halo kit, interior lights, abl dash light pipes, VIS ams hood,Pfadt ZL-Spec sway bars, TSW Nurburgring F:20x9 R:20x10, Nitto Invo F:275/45 R:315/35, Spohn trailing arms, Toe rods, pfadt rear subframe bushing, ridetech level 2 coilovers, 3.91 GM differential, BMR diff bushings....more to follow
954camaro is offline   Reply With Quote
Old 06-27-2014, 04:14 PM   #6
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Quote:
Originally Posted by 954camaro View Post
Ya you can really feel it!!! it's awesome! However, I havoke been told that 3.91 will show your torque to be actually lower on a dyno compared to if you were to have the stock 3.27 in which I find weird. Do not be fooled by the numbers though you got a lot more torque!
Thanks I'm convinced.

Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 06-27-2014, 05:23 PM   #7
Tampa Tuning
Like us on Facebook!

 
Tampa Tuning's Avatar
 
Drives: C5 Corvette/ 2010 Camaro
Join Date: Oct 2010
Location: Tampa, Fl
Posts: 2,454
I tell guys with automatics they will love the 3.91 gears, but me mindful if you start putting down a lot of RWHP, you sit and spin till 3rd gear catches.

Just keep your end game in mind.

Phil
__________________

Read this: http://ls1tech.com/forums/florida-me...-tuning-5.html
HP Tuners Mail order tuning program
VMAX Throttle body Vendor
www.TampaTuning.com
Tampa Tuning is offline   Reply With Quote
Old 06-27-2014, 06:10 PM   #8
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Thanks Phil, I'll definitely keep that in mind

Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 06-27-2014, 06:49 PM   #9
hammdo
 
Drives: 2011 2SS L99
Join Date: May 2014
Location: Dallas TX
Posts: 274
Got 'em -- Love them! Yes, some suspension mods and DR's (Drag Radials) are in order (for me) as I go for 500 RWHP...

Still, 3.91s are something else -- really awesome in the city -- car gets movin' quick...

My dyno's were 402 RWHP and 402 Torque -- FROM GPI (see my garage)
hammdo is offline   Reply With Quote
Old 06-28-2014, 12:00 PM   #10
954camaro
 
Drives: Camaro SS/RS inferno red interior
Join Date: Mar 2012
Location: Ft.Lauderdale FL
Posts: 611
Damn dude 402 that's really high for a L99
What was the temp when they did your dyno?
__________________
VMAX TB, Borla Catback Exhaust, Cold Air Inductions CAI, Racing scoop,ZL1 grille, Nightowl JDP upgrade halo kit, interior lights, abl dash light pipes, VIS ams hood,Pfadt ZL-Spec sway bars, TSW Nurburgring F:20x9 R:20x10, Nitto Invo F:275/45 R:315/35, Spohn trailing arms, Toe rods, pfadt rear subframe bushing, ridetech level 2 coilovers, 3.91 GM differential, BMR diff bushings....more to follow
954camaro is offline   Reply With Quote
Old 06-28-2014, 10:07 PM   #11
hammdo
 
Drives: 2011 2SS L99
Join Date: May 2014
Location: Dallas TX
Posts: 274
92 in Jacksonville Arkansas. Ryan @ GPI is awesome.

Read about it here

http://www.camaro5.com/forums/showthread.php?t=364759
hammdo is offline   Reply With Quote
Old 06-29-2014, 03:55 PM   #12
Jrichards73
 
Jrichards73's Avatar
 
Drives: 2011 2SS/RS Victory Red
Join Date: Aug 2011
Location: Virginia
Posts: 612
So you know, this



Equals this on the interstate
__________________
Jrichards73 is offline   Reply With Quote
Old 06-30-2014, 01:12 AM   #13
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Quote:
Originally Posted by Jrichards73 View Post
So you know, this



Equals this on the interstate
Thanks for the picture. I had a idea. Other then seeing it on the speedo/rpm, Can you feel a difference, Does the car feel like it's trying hard to maintain 70mph with the gears.

Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 06-30-2014, 11:15 AM   #14
stoopid
 
Drives: Modless 2014 2LS
Join Date: Mar 2014
Location: Upstate NY
Posts: 144
I assume what that means is it's less fuel efficient.
stoopid is offline   Reply With Quote
Old 06-30-2014, 11:18 AM   #15
Apex Motorsports

 
Apex Motorsports's Avatar
 
Drives: 2000 Camaro SS
Join Date: Feb 2010
Location: Louisville, Ky.
Posts: 22,947
Quote:
Originally Posted by stoopid View Post
I assume what that means is it's less fuel efficient.
It depends on how/where you use your car but in general you will see a 1-2 mpg reduction. These cars have 2 overdrive gears so it is nothing like doing gear swaps in older cars.
__________________
Apex Motorsports is offline   Reply With Quote
Old 07-01-2014, 11:46 PM   #16
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Quote:
Originally Posted by Apex Chase View Post
It depends on how/where you use your car but in general you will see a 1-2 mpg reduction. These cars have 2 overdrive gears so it is nothing like doing gear swaps in older cars.
Yea I have a El Camino with 3.73s and 350 tranny and I would not want my 5th gen camaro to have the similar rpm range. But like you said these cars have 2 overdrive gears oppose to none in my 350th

Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 07-02-2014, 05:35 AM   #17
SS PANTHER

 
SS PANTHER's Avatar
 
Drives: 2013 SS Camaro Convertible
Join Date: May 2013
Location: SoCal
Posts: 985
Are there any 3:70's that are equal or better to OEM gears for durability, longevity and quietness that you would recommend? I think this would be a better all around gear ratio for an A6.
SS PANTHER is offline   Reply With Quote
Old 07-02-2014, 11:56 AM   #18
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Quote:
Originally Posted by SS PANTHER View Post
Are there any 3:70's that are equal or better to OEM gears for durability, longevity and quietness that you would recommend? I think this would be a better all around gear ratio for an A6.
Yea I'm kinda torn between 3.45 and 3.91 for all around purposes.



Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 07-02-2014, 05:21 PM   #19
Kyle2k
LVL 50 Troll Stomper
 
Kyle2k's Avatar
 
Drives: 2010 Camaro
Join Date: Feb 2008
Location: Grand Forks, ND
Posts: 3,248
Quote:
Originally Posted by SS PANTHER View Post
Are there any 3:70's that are equal or better to OEM gears for durability, longevity and quietness that you would recommend? I think this would be a better all around gear ratio for an A6.
Lingenfelter has 3.70s and they are doing the job fine for me
__________________
Kyle2k is offline   Reply With Quote
Old 07-02-2014, 06:36 PM   #20
CC1299
 
Drives: 1969 SS
Join Date: Apr 2013
Location: Everywhere
Posts: 23
I'm looking at bumping up to 3:70, have a manual trans.
My feeling is a 383/350 turbo with 3:73 is just street able, nothing more, but have 6 speed should even it out.
Thoughts?
CC1299 is offline   Reply With Quote
Old 07-02-2014, 06:52 PM   #21
Ryne @ CMS

 
Ryne @ CMS's Avatar
 
Drives: 13 Camaro 1LE, 06 C6 z06, 07 Dmax
Join Date: Nov 2009
Location: Murrieta, CA
Posts: 688
near stock power level definitely do 3.91's... makes a big difference... i highly suggest staying OEM gears, meaning AAM factory gears, like 3.27, 3.45. 3.91... the factory AAM gears install great, always easy to get the correct pattern, and always quiet...
__________________
Ryne Cunningham
Cunningham Motorsports
Specializing In Late Model LSX Performance.
Shop#: (951)677-0716
www.Cunningham-Motorsports.com
Ryne-CMS@Hotmail.com
Ryne @ CMS is offline   Reply With Quote
Old 07-03-2014, 10:18 PM   #22
Jrichards73
 
Jrichards73's Avatar
 
Drives: 2011 2SS/RS Victory Red
Join Date: Aug 2011
Location: Virginia
Posts: 612
It feels like it has more power, not like it is working harder. At cruise you just get used to it, acceleration you remember.

Lost about 2 mpg but I drive like I stole it.
__________________
Jrichards73 is offline   Reply With Quote
Old 07-05-2014, 04:39 PM   #23
C-redfly

 
C-redfly's Avatar
 
Drives: 2012 completely Red Camaro
Join Date: Aug 2012
Location: Los Angeles
Posts: 833
Thanks for the tips Ryne and that's exactly what I was looking for, thanks JR73

Sent from my SM-N900P using Tapatalk
C-redfly is offline   Reply With Quote
Old 07-05-2014, 04:47 PM   #24
hammdo
 
Drives: 2011 2SS L99
Join Date: May 2014
Location: Dallas TX
Posts: 274
3.91s have been fantastic in my A6 L99. In the city its really gets going with minimal effort. On the highway, its just motors along around 2300 rpm @ 70.

Now, I have 402 RWHP -- we'll see what happen when I get closer to 500
Probably need some DRs or new wheels by then ;o)

-Don
hammdo is offline   Reply With Quote
Old 07-07-2014, 08:30 AM   #25
Pro Stock John
Writer / Blogger
 
Pro Stock John's Avatar
 
Drives: 2010 SS / 1951 Mercury
Join Date: May 2009
Location: Chicago, IL
Posts: 4,493
Yeah I'm doing about 2300 at 70 on the highway with 'em.
__________________
PROJECT HEAVY CHEVY: 2010 Camaro SS/RS |1SS | L99 | CGM
13.15@106 1.95 | Stock
12.06@113 1.70 | Bolt-Ons
Mods: GPI Tune | Bo White PTP | Kooks Headers | Hooker Maxflows | Circle D 3200 | New Era OTR | RCR Intake Manifold | Powerbond UDP

LSX Record List: http://motorhed.com/xf/threads/lsx-r...the-list.6022/
Pro Stock John is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 03:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.