AAM 3.91 Gears...Very Nice - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SilverSS3108 · 07-03-2011, 03:16 AM

I'm on the fence on these 2 set ups (4:11 & 3:91)and since noise doesn't bother me I'm curious as to how much time each of these will knock off at the track and what kinda milage loss I can expect with each... Oh and I have an A6 with all the normal bolt ons... Big cam, 150hp shot and 3200 stall converter coming in the next year or so.

marticus24 · 07-28-2011, 03:24 PM

Bump... I too am curious if there is a big difference between going with the 3.91 ratio vs the 4.11

Nvincent4708 · 07-28-2011, 03:51 PM

Quote:

Originally Posted by marticus24

Bump... I too am curious if there is a big difference between going with the 3.91 ratio vs the 4.11

I know in the C5 Vettes 3.91 was more desired than 4.11.

I think that with a 6 speed 3.91 should be the perfect gear. with the 4.11 i think 1st would be practically useless in most racing due to how short you would be in first.

just my opinion, no flaming please

BlackRS/SS · 07-28-2011, 04:38 PM

I just put the 3.91s in two weeks ago and I think these are the gears that should have come stock with the M6. They are great

Tshepp · 07-31-2011, 04:55 PM

Quote:

Originally Posted by marticus24

Bump... I too am curious if there is a big difference between going with the 3.91 ratio vs the 4.11

Debating this as well...I want to do gears on my cammed SS and wondering how big of a difference there is between these two setups. Do you guys think there is a noticeable change with gears as well? I have heard both sides that it can increase or decrease mpg...Hoping it doesnt decrease too much since my new cam/tune already dropped significantly.

LBV · 07-31-2011, 07:58 PM

I'd love to know if these 3.91 gears would fit my GXP ... stock my car comes with 3.70.

camaro1 · 07-31-2011, 08:09 PM

the g8 rear is smaller than the camaro, even the gxp diff

mike25 · 07-31-2011, 08:40 PM

i plan to do these..how is the gas mileage etc with these and how does it change seat o the pants/ ride quality etc?

puertoricanfont · 08-25-2011, 05:14 PM

I still can't decide if I want the 3.73 or 3.91 for my v6. And I don't care about gas mileage just the better of the two for v6 application

. We v6ers def need more get up and go.

ipimpthisc · 08-25-2011, 05:43 PM

so if u dont care then go 4.27 4.44 or even 5.13..I had a 5.13 in a rotary powered..my et went done .8 secs...thats a big margin but i was high in the cruising range on the highway.

summitss/rsls3 · 09-04-2011, 11:31 AM

4.11 in our cars will be a better gear than 3.91 mainly because of the tall 20 in tires we run.

summitss/rsls3 · 09-04-2011, 11:32 AM

For the record mine is waiting for the 4.11s to be installed at the moment.

SS 376 · 10-02-2011, 01:59 PM

Quote:

Originally Posted by BlackRS/SS

I just put the 3.91s in two weeks ago and I think these are the gears that should have come stock with the M6. They are great

I'm still scratching my head as to why GM doesn't offer an optional 3.73 at least like Ford does.

This way guys wont have to drop $1500+ just to swap out the gears.

RonniesCamaroSS · 05-02-2012, 05:56 PM

where can i get the 3.91 gears??

07-03-2011, 03:16 AM	#15
SilverSS3108 Drives: 2010 silver SS Join Date: Apr 2011 Location: Midland TX Posts: 1,063	I'm on the fence on these 2 set ups (4:11 & 3:91)and since noise doesn't bother me I'm curious as to how much time each of these will knock off at the track and what kinda milage loss I can expect with each... Oh and I have an A6 with all the normal bolt ons... Big cam, 150hp shot and 3200 stall converter coming in the next year or so. __________________ 2012 Corvette Grandsport... TSP headers, Borla S-Type, BTR Stage 3 N/A cam, Halltech Super Bee MF108 Last edited by SilverSS3108; 07-03-2011 at 09:55 AM.

07-31-2011, 07:58 PM	#20
LBV Drives: G8 GXP manual Join Date: Sep 2010 Location: Canada Posts: 157	I'd love to know if these 3.91 gears would fit my GXP ... stock my car comes with 3.70. __________________ 2009 GXP, Manual with Sunroof Zeta platform, LS3,TR6060 tranny ... ya, it's a 4-dr Camaro! Borla cat-back, H&R springs, & Sprintbooster & I love it!

07-31-2011, 08:09 PM	#21
camaro1 Drives: 550+RWHP 2010 camaro Join Date: Sep 2007 Location: wisconsin Posts: 1,588	the g8 rear is smaller than the camaro, even the gxp diff __________________ 415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller

07-31-2011, 08:40 PM	#22
mike25 Drives: 2012 Camaro 2SS/RS Join Date: Jul 2009 Location: Dubba V Posts: 2,869	i plan to do these..how is the gas mileage etc with these and how does it change seat o the pants/ ride quality etc? __________________ 2LT/RS M6 CGM VIN#53104 SOLD 2012 Black 2SS/RS w/ Hurst- Mods: Corsa catback, SSE, Vararam

09-04-2011, 11:31 AM	#25
summitss/rsls3 Drives: summit white/IOM ss/rs ls3 Join Date: Jan 2010 Location: Grand Island, Ne Posts: 556	4.11 in our cars will be a better gear than 3.91 mainly because of the tall 20 in tires we run. __________________ _____________________________________ 2010 Summit White w/IOM stripes SS/RS LS3, Pfadt spings, Richmond 4.11 gears, GTO clutch reservoir mod.,MGW shifter with retro handle, TSW Nurgurgring wheels, Nitto NT05R 315/35R20 on rear, Kooks 1 7/8 LT's no cats, Stainless works retro chambered catback, Cold Air Inductions CAI, Texas Speed UD pulley, LG G6x3 cam, PRC dual valvesprings w/titanium seats and retainers, Texas Speed 7.4" hardened push rods, Lethal Ported Fast LSXr 102, Ported stock TB, RX catchcan. Tuned by Dan at Dynosport in Lincoln, NE 483RWHP/442RWTQ SAE corrected.

07-28-2011, 03:24 PM	#16
marticus24 Drives: 2012 ZL1 Join Date: Jun 2008 Location: Metro Detroit, MI Posts: 604	Bump... I too am curious if there is a big difference between going with the 3.91 ratio vs the 4.11

07-28-2011, 04:38 PM	#18
BlackRS/SS Drives: Black RS/SS Join Date: Jun 2009 Location: Shoreline,Wa Posts: 52 View My Garage	I just put the 3.91s in two weeks ago and I think these are the gears that should have come stock with the M6. They are great

08-25-2011, 05:14 PM	#23
puertoricanfont Drives: 2016 Camaro 2ss Join Date: Aug 2010 Location: Tampa, FL Posts: 1,623	I still can't decide if I want the 3.73 or 3.91 for my v6. And I don't care about gas mileage just the better of the two for v6 application . We v6ers def need more get up and go.

08-25-2011, 05:43 PM	#24
ipimpthisc Banned Drives: @twinturbo, cammed, intrcooled@ Join Date: Apr 2009 Location: nyc, EAST COAST HEAVY HITTERS Posts: 739	so if u dont care then go 4.27 4.44 or even 5.13..I had a 5.13 in a rotary powered..my et went done .8 secs...thats a big margin but i was high in the cruising range on the highway.

09-04-2011, 11:32 AM	#26
summitss/rsls3 Drives: summit white/IOM ss/rs ls3 Join Date: Jan 2010 Location: Grand Island, Ne Posts: 556	For the record mine is waiting for the 4.11s to be installed at the moment. __________________ _____________________________________ 2010 Summit White w/IOM stripes SS/RS LS3, Pfadt spings, Richmond 4.11 gears, GTO clutch reservoir mod.,MGW shifter with retro handle, TSW Nurgurgring wheels, Nitto NT05R 315/35R20 on rear, Kooks 1 7/8 LT's no cats, Stainless works retro chambered catback, Cold Air Inductions CAI, Texas Speed UD pulley, LG G6x3 cam, PRC dual valvesprings w/titanium seats and retainers, Texas Speed 7.4" hardened push rods, Lethal Ported Fast LSXr 102, Ported stock TB, RX catchcan. Tuned by Dan at Dynosport in Lincoln, NE 483RWHP/442RWTQ SAE corrected.

05-02-2012, 05:56 PM	#28
RonniesCamaroSS Drives: 2011 SS camaro Join Date: Feb 2012 Location: bryant, Ar Posts: 206 View My Garage	where can i get the 3.91 gears??

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Richmond Gear Camaro gears	RichmondGear	V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)	85	01-19-2015 11:43 AM
Tune, gears, warrantee, all that stuff again...but	f5journal	Tuning / Diagnostics -- engine and transmission	6	02-25-2011 11:13 AM
Swap v6 rearend for a v8 rearend lower gears	dcmock	Camaro V6 LLT Engine, Exhaust, and Bolt-Ons	14	11-28-2010 10:18 PM
GM 3:55 gears From Chevelle	War Eagle	Transmission / Driveline	0	02-19-2010 09:14 PM
Acceleration 2. What gears fit?	mmbarberoilman	V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)	20	05-06-2009 07:37 AM