Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
River City Camaro Customs
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 06-05-2013, 03:44 PM   #1
M.D.P84
 
M.D.P84's Avatar
 
Drives: Camaro V8
Join Date: Mar 2013
Location: South American
Posts: 30
Question add 3.91 gears in my camaro L99

hello friends, well I wanted to know what the advantages of having 3.91 gears. good in terms of launching from 0 to 60mph, and that changes in top speed? gains some wrhp?? can help me to clarify these doubts??
M.D.P84 is offline   Reply With Quote
Old 06-05-2013, 03:53 PM   #2
caverman


 
caverman's Avatar
 
Drives: '69 SS Convertible
Join Date: May 2009
Location: DFW, TX
Posts: 7,063
Torque...or the feel of....Yes. HP....none.

You might have more problems launching because it will probably smoke the tires way more. Consider 3.70 gears.
__________________
-2010 Camaro 2SS | M6 | VR w/White Stripes | 1 3/4" KOOKS - 3" Magnaflow | LPE 3.91 gears | ADM tuned | Halltech w/ADM Scoop | Spohn/BMR Trailing Arm/Toe Rod | BC Coilovers| Pedders FE4 ZL1 swaybars | Cradle/Diff/Radius Rod bushings | VMax TB | Morimoto Projectors | MGW shifter | Red Calipers
Build Journal
caverman is offline   Reply With Quote
Old 06-05-2013, 03:56 PM   #3
Dznts
Anabolic Connoisseur
 
Dznts's Avatar
 
Drives: Blown Camaro 2SS/RS LS3-2007 Tahoe
Join Date: Sep 2010
Location: Oklahoma
Posts: 25,593
+1 for 3.70 gears
__________________
Dznts is offline   Reply With Quote
Old 06-05-2013, 04:03 PM   #4
M.D.P84
 
M.D.P84's Avatar
 
Drives: Camaro V8
Join Date: Mar 2013
Location: South American
Posts: 30
Quote:
Originally Posted by caverman View Post
Torque...or the feel of....Yes. HP....none.

You might have more problems launching because it will probably smoke the tires way more. Consider 3.70 gears.
3.70 would be good?? The Camaro 1LE has 3.91 gears, right?? the release will be harmed with 3.91 gears? I'm thinking of doing this mod, to improve launch 0A 60mph or 1/4 mile. thanks for the explanation
M.D.P84 is offline   Reply With Quote
Old 06-05-2013, 04:24 PM   #5
the_fast_one

 
the_fast_one's Avatar
 
Drives: 2012 IOM 2SS, 05 SOM Colorado
Join Date: May 2012
Location: IL
Posts: 799
The 1le has 3.91 but it has different gears in the tranny to off set it. Most auto are going to 3.70 do to the gears inside the auto tranny.
the_fast_one is offline   Reply With Quote
Old 06-05-2013, 04:31 PM   #6
PalmerGA


 
PalmerGA's Avatar
 
Drives: 2013 SIM 1SS/RS L99
Join Date: May 2012
Location: Southwest GA
Posts: 5,911
What are the stock L99 gears - 3.27 or 3.45? What are the gains over them by going to 3.70? Does changing gearing require a tune?
__________________
2013 1SS/RS Coupe L99
CAI Air Intake w/ Apex Scoop
VMAX CNC Ported Throttle Body
Solo Axle-Back Exhaust w/ J-pipes
RX Catch Can
Husky Splash Guards
Heritage Grille
Oracle Chrome Turn Signal Bulbs
Emblem Pros Retro SS Badges
Emblem Pros Custom Retro SS Kickplates
Emblem Pros Under-hood Bowtie
PalmerGA is offline   Reply With Quote
Old 06-05-2013, 04:44 PM   #7
Lgndryhr
Camaro for Life
 
Lgndryhr's Avatar
 
Drives: Nothing.... :-(
Join Date: Jun 2011
Location: Memphis, TN
Posts: 5,668
Send a message via AIM to Lgndryhr
Auto should upgrade to 3.70
Manual should upgrade to 3.91
__________________
Current ride: No Camaro right now. In my parents 2010 Camry XLE :-(
Exterior: no clue
Nickname: Odin
Best run: not until after break-in

How to hug your camaro
Buy the car that you would most like to get beat in. The other guy will always be faster.
Lgndryhr is offline   Reply With Quote
Old 06-05-2013, 06:09 PM   #8
Motion427
Account Suspended
 
Drives: 2010 2SS/RS Red Jewel L99
Join Date: Jun 2011
Location: NB,Canada
Posts: 840
Stock L99 gears would be 3.27
Tune would be required for the speedometer to be accurate aswell for the tranny to shift correctly.
Motion427 is offline   Reply With Quote
Old 06-05-2013, 06:10 PM   #9
M.D.P84
 
M.D.P84's Avatar
 
Drives: Camaro V8
Join Date: Mar 2013
Location: South American
Posts: 30
I found to buy 3.73 and 3.70, which would be better?? the site has phastek 3.91 to automatic, http://www.phastekperformance.com/20...-gears-391.htm!! what suggestion do you have?? what changes in 0/60mph with 3.73 or 3.91 gears?? top speed decreases or increases?? can affect it?? or could benefit the top speed?? before this mod, I need to have this information, thank you for the comments guys.
M.D.P84 is offline   Reply With Quote
Old 06-05-2013, 09:01 PM   #10
Baltimorejohn1

 
Baltimorejohn1's Avatar
 
Drives: Camaro 2SS
Join Date: Apr 2011
Location: DC Metro
Posts: 1,233
OP one way to checkout your question is to see what people are running using the setup you are talking about...... I hope this helps out....

3.70


4.10


4.10


Also check the Fast List and see what is working

Last edited by Baltimorejohn1; 06-05-2013 at 09:11 PM.
Baltimorejohn1 is offline   Reply With Quote
Old 06-05-2013, 09:48 PM   #11
VADER SS L99


 
VADER SS L99's Avatar
 
Drives: 2010 Camaro SS L99
Join Date: Nov 2009
Location: Edmond, OK
Posts: 2,449
Only do the 3.91's if you are cammed or have a triple disk aftermarket converter. Otherwise do like others said and get the 3.70's. I dont consider wheel spin from 3.91 gears to be the biggest issue as you could always use bigger and stickier tires. Its the fact that it forces a shift into 5th too soon if you dont have a cam with a higher redline or triple disk converter that can be locked up at WOT.
__________________
BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009.
VADER SS L99 is offline   Reply With Quote
Old 06-06-2013, 04:45 AM   #12
M.D.P84
 
M.D.P84's Avatar
 
Drives: Camaro V8
Join Date: Mar 2013
Location: South American
Posts: 30
Quote:
Originally Posted by Baltimorejohn1 View Post
OP one way to checkout your question is to see what people are running using the setup you are talking about...... I hope this helps out....

3.70


4.10


4.10


Also check the Fast List and see what is working

thank you very much, loved the videos
M.D.P84 is offline   Reply With Quote
Old 06-06-2013, 04:48 AM   #13
M.D.P84
 
M.D.P84's Avatar
 
Drives: Camaro V8
Join Date: Mar 2013
Location: South American
Posts: 30
Quote:
Originally Posted by VADER SS L99 View Post
Only do the 3.91's if you are cammed or have a triple disk aftermarket converter. Otherwise do like others said and get the 3.70's. I dont consider wheel spin from 3.91 gears to be the biggest issue as you could always use bigger and stickier tires. Its the fact that it forces a shift into 5th too soon if you dont have a cam with a higher redline or triple disk converter that can be locked up at WOT.
thank you, with 3.91 can hurt top speed ... better off for 3.70!!
M.D.P84 is offline   Reply With Quote
Old 06-06-2013, 05:21 AM   #14
Motion427
Account Suspended
 
Drives: 2010 2SS/RS Red Jewel L99
Join Date: Jun 2011
Location: NB,Canada
Posts: 840
Shouldn't hurt top speed with 3.91's. It would take alot of HP to reach redline in 6th gear for sure.
Motion427 is offline   Reply With Quote
Old 06-06-2013, 09:09 AM   #15
bhillakaiceberg

 
bhillakaiceberg's Avatar
 
Drives: 2011 Synergy Green 2SS/RS L99
Join Date: Apr 2011
Location: Maryland
Posts: 1,154
Im thinking about doing 3.70 Gears as well.
__________________
2011 Chevrolet Camaro 2SS/RS L99 (1 of 782)
Custom Engine Cover and Hoodliner........11.69 @121mph
Built and Tuned by Race Proven Motorsports (RPM)
bhillakaiceberg is offline   Reply With Quote
Old 06-08-2013, 07:10 PM   #16
Baltimorejohn1

 
Baltimorejohn1's Avatar
 
Drives: Camaro 2SS
Join Date: Apr 2011
Location: DC Metro
Posts: 1,233
This lower (higher numerically) ratio rear drive gear will increase effective rear wheel torque multiplication in 2010 - 2013 SS Camaros by 13% (over standard 3.45 ratio) in a manual tansmission-equipped car, and 20% (over standard 3.27) in an automatic-equipped car. This gearset is the original equipment ratio found in the 1LE 2013 Camaro package.

NOTE: This change will affect the indicated vehicle speed. Recalibration is required for accurate speedometer reading.

https://theblock.com/sema12/part/6
Baltimorejohn1 is offline   Reply With Quote
Old 06-08-2013, 07:13 PM   #17
Baltimorejohn1

 
Baltimorejohn1's Avatar
 
Drives: Camaro 2SS
Join Date: Apr 2011
Location: DC Metro
Posts: 1,233
Quote:
Originally Posted by M.D.P84 View Post
thank you very much, loved the videos
You're more than welcome
Baltimorejohn1 is offline   Reply With Quote
Old 07-25-2013, 11:27 AM   #18
ramiloutfi
 
ramiloutfi's Avatar
 
Drives: Camaro ZL 550 SLP
Join Date: Jul 2012
Location: Dubai, UAE
Posts: 49
I'm using 3.91 gears with all the below mods and Nitto NT05 tires 315 / 35 rear. No issues at all
__________________
Cold-Air Inductions® System | ARH 1 7/8" Headers w/o Cats | SLP PowerFlo-X Crossover Pipe | SLP Powerflo Axle Back Exhaust | TVS2300 Magnacharger w/ 3.0" pulley | NEP 223/235 Custom Cam | Lunati Gold Dual Valve Springs | Manley 7.400" Pushrods | Injector Dynamics ID850 Injectors | Nick Williams 102MM FBW Throttlebody | Eibach springs w/ 1" drop | SLP Adjustable sway bars | Forgestar F14 20" | Nitto NT555R tires | Baer Drilled & Slotted Rotors | Hawk HPS Break Pads | Lingenfelter 3.91 Gear Kit
ramiloutfi is offline   Reply With Quote
Old 07-26-2013, 10:00 PM   #19
Pro Stock John
Writer
 
Pro Stock John's Avatar
 
Drives: 2010 SS / 1951 Mercury
Join Date: May 2009
Location: Chicago, IL
Posts: 4,615
Quote:
Originally Posted by M.D.P84 View Post
hello friends, well I wanted to know what the advantages of having 3.91 gears. good in terms of launching from 0 to 60mph, and that changes in top speed? gains some wrhp?? can help me to clarify these doubts??
3.91 gears will increase torque multiplication across all gears. Or in laymans terms, your engine will spin faster in the same amount of time as it would with the stock 3.27 gears. I think that the car will be hard to hook in 1st gear, maybe half of second, just my speculation. Now you'd hit top speed quicker because your engine will RPM quicker.

You shouldn't see an increase in RWHP, in fact those gears will eat up a little HP.

IMO the gears would be fun from a roll.
__________________
PROJECT HEAVY CHEVY: 2010 Camaro SS/RS |1SS | L99 | CGM
13.15@106 1.95 | 100% Stock
12.06@113 1.70 | Bolt-Ons | Stock 3.27s
Mods: GPI Tune | Bo's PTB | Kooks LTs | Hooker Maxflows | Circle D 3200 | New Era OTR | RCR AirRam Manifold | Powerbond UDP | 3.91s

LSX Record List: http://motorhed.com/xf/threads/lsx-r...the-list.6022/
Pro Stock John is offline   Reply With Quote
Old 07-26-2013, 11:14 PM   #20
axis
Search Ninja
 
axis's Avatar
 
Drives: 2010 Black 2SS/RS A6
Join Date: Oct 2009
Location: Central Ark
Posts: 7,184
They would have zero affect on your top speed. Our cars have the gears to go over 250mph. We just don't have the HP or aero to get there. They would affect your cruise rpm, thus MPG. By how much, I don't know.
__________________
2010 Black 2SS/RS A6
Halltech CF 102 fed
GPI modded intake manifold
Bo (knows) White ported TB
Kooks LT's/ Dynomax VT
Pfadted (springs/sways)
Dyno tuned by Rhino and GPI

I once parallel parked a train.
axis is online now   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 09:08 PM.


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