3.73 vs 3.91 gears in an SS A6 - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

E.T. · 04-08-2012, 04:37 PM

Yeah, it would be cool to be able to try before you buy.

mike.nite · 04-08-2012, 06:18 PM

Quote:

Originally Posted by Unobtainium

There is no real problem with having a bunch of gear. You will accelerate faster, and with the ridiculous 6th in the auto, cruising should still be great.
I want 6th to be my top speed gear, so I'm thinking the 3.91's are almost enough.

I'll definately go with the LPE 3.7s - because:

- Since I'll use the car as daily driver with a lot of city driving and start/stop driving - I really think 3.7s are enough gear.

- I better want to be safe than sorry.

- I never heard of a L99 owner with 3.7s who wasn't happy with his choice.

- Most of the shops and forum members recomended 3.7s for my n/a L99.

E.T. · 04-08-2012, 10:23 PM

Quote:

Originally Posted by mike.nite

I'll definately go with the LPE 3.7s - because:

- Since I'll use the car as daily driver with a lot of city driving and start/stop driving - I really think 3.7s are enough gear.

- I better want to be safe than sorry.

- I never heard of a L99 owner with 3.7s who wasn't happy with his choice.

- Most of the shops and forum members recomended 3.7s for my n/a L99.

I don't think you'll regret it. I would do this again in a heartbeat. These things are awesome!

JohnnyComeLately · 04-09-2012, 06:13 AM

Sorry to ask what I might easily google, but am I right in assuming L99 SS' come with 3.23? It sounds like if I eventually plan to go ProCharger (9#s or so), I should not go 3.73s? In the 4th Gens those were ok (A4), but they also weren't 6 speeds either.

E.T. · 04-09-2012, 06:40 AM

Quote:

Originally Posted by JohnnyComeLately

Sorry to ask what I might easily google, but am I right in assuming L99 SS' come with 3.23? It sounds like if I eventually plan to go ProCharger (9#s or so), I should not go 3.73s? In the 4th Gens those were ok (A4), but they also weren't 6 speeds either.

I'm thinking they were 3.27 stock. Maybe someone with a blower will chime in, but I've read that when your putting down that much power, even the 3.7s might be too much gearing for the auto.

JohnnyComeLately · 04-11-2012, 08:27 AM

Quote:

Originally Posted by E.T.

I'm thinking they were 3.27 stock. Maybe someone with a blower will chime in, but I've read that when your putting down that much power, even the 3.7s might be too much gearing for the auto.

Thx.

lexlueger · 04-11-2012, 09:25 AM

Quote:

Originally Posted by E.T.

I'm thinking they were 3.27 stock. Maybe someone with a blower will chime in, but I've read that when your putting down that much power, even the 3.7s might be too much gearing for the auto.

Correct 3.27's are the stock gears in an auto. In a perfect world a set of HD 3.45's with a PD blower would be golden IMHO. Going with LS3 gears are an option but I don't think they would put up with the type of power we put out with FI. 3.45 with a PD blower or 3.73 with a centri.

grocerygetter · 04-11-2012, 11:25 AM

I agree...3.45 with a PD, 3.70 with a centri...on an auto. KNow with either gear/blower combo, traction doesn't begin until 3rd.

klatterblast · 06-12-2018, 08:17 PM

I had 4.11s in my cammed , supercharged 2010 ss. They are fun on the street but wish I would have gotten 3.90s. Do it.

briancamaross · 06-12-2018, 10:09 PM

I have 3.91 n/a cammed car cut 1.60 at drag strip with 305/45/18 nitto nt05r

gnance2 · 07-30-2019, 08:41 AM

I just installed 3.91 in my A6. I just have bolt ons and went from 13.2 to 12.90 in the quarter. Best mod so far.

Maroon 6.2L SS · 07-30-2019, 05:04 PM

gnance 2, can you post your car's full setup? Dropping .3 in the quarter is big switching to 3.91s. I'm debating between 3.70/3.73 gears and 3.91. I mainly use my car for bracket racing (sportsmans class) at the strip

gnance2 · 09-12-2019, 05:01 PM

I just have full bolt ons with ported TB and smaller underdrive pulley. It is convertible though. Drag radials are a must with the 3.91 gears.

04-08-2012, 04:37 PM	#29
E.T. Drives: 2012 Camaro 2SS/RS Join Date: Jul 2010 Location: Cleveland, OH Posts: 3,273	Yeah, it would be cool to be able to try before you buy. __________________

04-09-2012, 06:13 AM	#32
JohnnyComeLately Drives: 2010 SS/RS Join Date: Mar 2011 Location: San Diego Posts: 311	Sorry to ask what I might easily google, but am I right in assuming L99 SS' come with 3.23? It sounds like if I eventually plan to go ProCharger (9#s or so), I should not go 3.73s? In the 4th Gens those were ok (A4), but they also weren't 6 speeds either. __________________ Both my rides will smoke ya 2010 L99 2SS/RS - Hertz HE HSK 165 components/PPI A404 & A600/JL Audio 10W6/Audio Control EQX, FAST Intake Manifold

04-11-2012, 11:25 AM	#36
grocerygetter instigator Drives: 2020 6.2 Trail Boss, 2022 XC90 Join Date: Jan 2010 Location: 72034 Posts: 3,979 View My Garage	I agree...3.45 with a PD, 3.70 with a centri...on an auto. KNow with either gear/blower combo, traction doesn't begin until 3rd. __________________ -John S.

06-12-2018, 08:17 PM	#37
klatterblast Drives: 2010 camaro 2ssrs blk. Join Date: Oct 2009 Location: walker la. Posts: 1,732 View My Garage	I had 4.11s in my cammed , supercharged 2010 ss. They are fun on the street but wish I would have gotten 3.90s. Do it. __________________ 2010 Hennessey HPE650 2SSRS Blk/Blk Magnuson TVS2300,ported heads,cam,Hotchkis suspension. Weld 17”s, Mickey Thompson’s.

06-12-2018, 10:09 PM	#38
briancamaross Drives: 2011 ss 2ss auto camaro Join Date: Mar 2015 Location: mary esther florida Posts: 385 View My Garage	I have 3.91 n/a cammed car cut 1.60 at drag strip with 305/45/18 nitto nt05r __________________ 2011 2ss white Camaro mods are texas speed stage 4 cam 235/239 Texas speed 2inch headers no cats magna flow bullet mufflers gpi rod mod ,circle d 4000-4200 5c stall. 3.91 gears vararm cai power wedge.

07-30-2019, 08:41 AM	#39
gnance2 Drives: 2013 Chevy Camaro 2SS Join Date: Jul 2019 Location: 73071 Posts: 3	I just installed 3.91 in my A6. I just have bolt ons and went from 13.2 to 12.90 in the quarter. Best mod so far.

07-30-2019, 05:04 PM	#40
Maroon 6.2L SS Drives: 2010 Camaro SS A6 Join Date: Oct 2018 Location: Brighton, MI Posts: 190	gnance 2, can you post your car's full setup? Dropping .3 in the quarter is big switching to 3.91s. I'm debating between 3.70/3.73 gears and 3.91. I mainly use my car for bracket racing (sportsmans class) at the strip

09-12-2019, 05:01 PM	#41
gnance2 Drives: 2013 Chevy Camaro 2SS Join Date: Jul 2019 Location: 73071 Posts: 3	I just have full bolt ons with ported TB and smaller underdrive pulley. It is convertible though. Drag radials are a must with the 3.91 gears.

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