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12-31-2011, 09:40 AM
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#1 |
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Account Suspended
Drives: 2ss Join Date: Sep 2011
Location: Illinois
Posts: 199
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3.73 vs 3.91 gears in an SS A6
Is anyone running the new 3.91 gears with an SS A6? If so how do you like it?
What would be better for an SS A6, 3.73 or 3.91 for someone who drives every day? |
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12-31-2011, 06:55 PM
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#2 |
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Account Suspended
Drives: 2ss Join Date: Sep 2011
Location: Illinois
Posts: 199
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This post is going well, I take it nobody with a A6 is running with 3.91 gears?
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01-03-2012, 08:21 AM
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#3 |
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I do not have the A6 but with its low 1st gear 3.91s would be over kill i bet you will smoke the tires every time you try and play. 3.73s are about perfect unless you have a lot of mods.
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04-01-2012, 03:21 PM
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#4 |
Drives: 2011 2SS L99, 2010 LT RS Join Date: Mar 2010
Location: NY (USA) ZH (Switzerland)
Posts: 437
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I'm interested in this as well. Any other feedback?
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04-01-2012, 03:41 PM
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#5 |
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instigator
Drives: 2020 6.2 Trail Boss, 2022 XC90 Join Date: Jan 2010
Location: 72034
Posts: 3,979
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i love my 3.70s...with a blower, you won't want any more gear than that.
__________________
-John S.
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04-01-2012, 03:47 PM
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#6 | |
        
Drives: V10 BMW M5, Supercharged 2SS/RS Join Date: Jun 2010
Location: Charlotte NC /Brooklyn NY
Posts: 2,305
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Quote:
 3.70/3.73 are all you need. Just don't buy any richmond gears.
__________________
MAST 416 STROKER: STAGE 3 TVS 2300 CUSTOM CAM TPIS 102 TB IW 8 RIB PULLEY W/ OD COG REARS NX EXPRESS/NANO KIT KDI HEAT EXCHANGER/ROTOFAB RESERVOIR CIRCLE D 2800 TC/FLEX PLATE/ADM TRANS COOLER DSS DRIVESHAFT/1400 HP AXLES EATON TRUETRAC -LPE 3.27 GEARS DYNATECH HEADERS/MAGNAFLOW EXHAUST SQUASH RETURN STYLE FS ID 850's E85/ FLEXFUEL BMR/EIBACH SUSPENSION KILL MODE, ON. |
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04-01-2012, 04:15 PM
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#7 |
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Drives: 2011 2SS L99, 2010 LT RS Join Date: Mar 2010
Location: NY (USA) ZH (Switzerland)
Posts: 437
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I'd prefer LPE gears. I do have a automatic trans.
I got you on the FI setups. But since I just have bolt ons and a very mild cam I'm not shure if I could also go for the 3.91 gears. 
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04-01-2012, 04:17 PM
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#8 |
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LVL 50 Troll Stomper
Drives: 2010 Camaro Join Date: Feb 2008
Location: Indianapolis
Posts: 3,463
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If you aren't planning on drag racing and trying to match the right gear for your trap speed then go with whatever.
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04-01-2012, 04:37 PM
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#9 |
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Drives: 2011 2SS L99, 2010 LT RS Join Date: Mar 2010
Location: NY (USA) ZH (Switzerland)
Posts: 437
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Yes I wont drag race. But a lot of city/stop&go and some highway traveling. I'm just not shure with thte 3.91 because a friend told me that this is just to crazy for the A6 and even bone stock you'll have traction problems with a 3.91 - is that true?
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04-01-2012, 04:41 PM
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#10 | |
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Drives: V10 BMW M5, Supercharged 2SS/RS Join Date: Jun 2010
Location: Charlotte NC /Brooklyn NY
Posts: 2,305
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Quote:
__________________
MAST 416 STROKER: STAGE 3 TVS 2300 CUSTOM CAM TPIS 102 TB IW 8 RIB PULLEY W/ OD COG REARS NX EXPRESS/NANO KIT KDI HEAT EXCHANGER/ROTOFAB RESERVOIR CIRCLE D 2800 TC/FLEX PLATE/ADM TRANS COOLER DSS DRIVESHAFT/1400 HP AXLES EATON TRUETRAC -LPE 3.27 GEARS DYNATECH HEADERS/MAGNAFLOW EXHAUST SQUASH RETURN STYLE FS ID 850's E85/ FLEXFUEL BMR/EIBACH SUSPENSION KILL MODE, ON. |
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04-01-2012, 07:47 PM
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#11 |
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instigator
Drives: 2020 6.2 Trail Boss, 2022 XC90 Join Date: Jan 2010
Location: 72034
Posts: 3,979
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3.70s. Lpe/aam
__________________
-John S.
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04-02-2012, 02:07 PM
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#12 |
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Drives: 2011 2SS L99, 2010 LT RS Join Date: Mar 2010
Location: NY (USA) ZH (Switzerland)
Posts: 437
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thank you verry much for the feedback guys
 can someone explain to me why the 3.91 in a street car is a overkill? What are the downsides? thanks Last edited by mike.nite; 04-02-2012 at 04:40 PM. |
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04-02-2012, 05:39 PM
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#13 |
Drives: 2010 Camaro 2SSRS RJT L99 Join Date: Jun 2010
Location: Fort Shaw, Montana
Posts: 1,242
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I have LPE 3.91 in my 2010 A6 with a Maggie on top. Its alot of gear for a supercharged L99 but once you get used to them, they are amazing. I had the 3.73s before this and would not go back.
Fuel milage is not a huge difference, slightly better in town, slightly less on the highway, averages out about the same depending on how much of each you drive. Dramatic kick in the rear compared to factory 3.27 gears!!! 1st gear can be pretty wild, almost uncontrolable if you mash the throttle so you have to be careful.
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Fiftydriver
2010 SSRS, RJTC, L99, Maggie 2300 SC, 3.4" pulley, Roto-Fab CAI, Dynatech Supermaxx LT headers, Dynatech High Flow cats, Corsa Cat back exhaust, Dual Elite Engineering catch can, MSD wires and Jannetty custom tune, JRE custom diff w/ posi mod, 3.91 LPE gears, Pfaht trailing arms, Pfaht trailing arm and Diff bushings, drop springs and sport sway bars front and back, Fesler dual guage pillar pod w/ AM Cobalt Boost and A/F guages. More to come!! |
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04-02-2012, 05:59 PM
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#14 |
  
Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008
Location: S.W. Florida
Posts: 6,294
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As mentioned. Be careful.
The L99 A6s has a very aggressive 1st gear and it can easily become useless with too much gear. |
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