3.91 gear cost - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

chuckie669 · 08-15-2018, 05:37 PM

Who has done an auto gear swap to 3.91s?

I'm in E-tx and I need some work done to my car and figured I could take advantage and have new gears installed. Wife approved it so I said yes and just got an invoice for $1750 for just the gear install.

Does the attached invoice seem fair?

KerseySS · 08-15-2018, 06:20 PM

I got a quote for $1500 for my install and went to another reputable mechanic that charged me $800. Look around, the install prices are alot different between mechanics from what I've found. Although I brought my parts in for them to install. I found a 3.91 gear for $250 that someone purchased but never installed.

Sent from my SM-G930V using Tapatalk

theragtopguy · 08-15-2018, 07:18 PM

One of the guys in my Camaro group had this done at the Chevy dealer and paid around 1200 for everything including the computer stuff.

Your price seems a little high to me.

Matt8892(2) · 08-15-2018, 07:41 PM

Or wait and buy the complete diff from someone selling. I got the entire diff for 800 then sold my 3.45 diff for 500. Only 300 bucks out of pocket.

acammer · 08-15-2018, 08:07 PM

That seems steep to me. I paid like $800 for my 4.10s, the install kit, and the LPW diff cover (which was $240 of that). I then paid $500 for the install - I got a bit of a break there. Still, at full cost, if you take out the LPW cover, I'd probably only be around 1200-1300.

chuckie669 · 08-15-2018, 08:51 PM

Everything seems itemized out and upfront. Just trying to understand the cost as I'm not used to paying others to work on my car. I don't have the ability to do this work myself. Does that read as 9 hours labor to remove the pumpkin, set up gears and reinstall?

I was reading about just buying a complete 1le diff which would save on a lot of labor, but those all seem to go for 1100-1400 now which really doesn't end up much different

KB85 · 08-15-2018, 10:31 PM

I paid about 1k for everything. If you buy a 1le diff are you a m6 or a6? Manuals have different parts

rontammy0 · 08-15-2018, 11:31 PM

Op the shop that did mine has a gear and suspension shop they work with. The gear shop has a few diffs in stock with different gear set ups. My shop simply removed my diff and replaced it with one that had the 391s already installed Then sent my diff in as an exchange. I think it was around $1400.

Talladega · 08-16-2018, 08:57 AM

I had the Chevy dealer down the street put mine in and it was $477 for the labor, $58.68 for the oil, and I provided the gear kit. The gear kit with seals, bearings, bolts additive etc was about $450. All in it was around $1,000 for me, so $1,700 seems steep to me.

FKNGRSY · 08-17-2018, 12:08 AM

A friend did my 4.10 Install after hours at the dealership for a case of beer. I guess I owe him a couple more cases

LCPLPunk · 08-18-2018, 11:14 AM

I just had mine done about a week ago and it was $950 after tax. Best mod so far!!!

chuckie669 · 08-18-2018, 11:48 AM

Out of curiosity, what all did they do? Just 3.91 kit? I'm looking at 4 components for my primary charges. the kit, then the bearing set. Removal and install of pumpkin and setting up the gears.

I'm having my driveshaft, repaired/ replaced too so that won't be a labor cost twice. So that's good

xc_SS/RS · 08-18-2018, 03:17 PM

Quote:

Originally Posted by LCPLPunk

I just had mine done about a week ago and it was $950 after tax. Best mod so far!!!

Is that parts and labor? Where'd ya get it done?

1JEWLDSSRS · 08-23-2018, 02:24 PM

Ok, question for you guys, I am going to do the 3.91 gear swap in my L99 that is stalled and cammed with a custom dyno tune, if I have my dealership does the install our Camaro club gets 15% discount on parts and labor, I can get it done for a good price I think, going with the GM Performance kit that has everything, my question is when they flash my computer to correct the speedo for the gear change, will that interfere with my tune we have on the trans now? For the stall and shift points? Or would I have to drive down to my builder / tuner to have the trans retuned. Just wondering. Thanks guys..

08-15-2018, 05:37 PM	#1
chuckie669 Drives: 2011 ss Join Date: Sep 2015 Location: E-TX Posts: 764	3.91 gear cost Who has done an auto gear swap to 3.91s? I'm in E-tx and I need some work done to my car and figured I could take advantage and have new gears installed. Wife approved it so I said yes and just got an invoice for $1750 for just the gear install. Does the attached invoice seem fair? Last edited by chuckie669; 08-16-2018 at 08:56 PM.

08-15-2018, 06:20 PM	#2
KerseySS Joey Drives: 2011 Camaro 2SS/RS L99 Cyber Grey Join Date: Feb 2017 Location: GA Posts: 113	I got a quote for $1500 for my install and went to another reputable mechanic that charged me $800. Look around, the install prices are alot different between mechanics from what I've found. Although I brought my parts in for them to install. I found a 3.91 gear for $250 that someone purchased but never installed. Sent from my SM-G930V using Tapatalk __________________ 2011 Cyber Grey L99 SS/RS- 3.91 Gear MRR 228 Wheels-Hurst shifter/base plate LT Headers no CATS-Magnaflow 16582 Axle Back RoboFab intake-Dyno Steve tune ZL1 Rocker Panels-SLP Splitter Lowered on Phastek springs Pray Performance ported TB

08-15-2018, 07:18 PM	#3
theragtopguy Lifetime Philly Fan Drives: 2015 Spring Edition 2SS M-6 Join Date: Mar 2012 Location: South Central Florida Posts: 1,862 View My Garage	One of the guys in my Camaro group had this done at the Chevy dealer and paid around 1200 for everything including the computer stuff. Your price seems a little high to me. __________________ 2015 Green Flash, Delivered 4/10/15 CAI, NPP Exhaust, Short-throw shifter BBK LT HEADERS 1 7/8” Tune by DynoSteve via SCTx4 Tuner One of 82 GF Ragtops built in '15 out of 811 Total [/SIZE]

08-15-2018, 08:07 PM	#5
acammer GPI Sales Consultant Drives: 2011 Camaro 2SS SGM Join Date: Jul 2016 Location: Weedsport, NY Posts: 2,794 View My Garage	That seems steep to me. I paid like $800 for my 4.10s, the install kit, and the LPW diff cover (which was $240 of that). I then paid $500 for the install - I got a bit of a break there. Still, at full cost, if you take out the LPW cover, I'd probably only be around 1200-1300. __________________ GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph. *Got a question about a GPI product? Feel free to shoot me a message!*

08-15-2018, 08:51 PM	#6
chuckie669 Drives: 2011 ss Join Date: Sep 2015 Location: E-TX Posts: 764	Everything seems itemized out and upfront. Just trying to understand the cost as I'm not used to paying others to work on my car. I don't have the ability to do this work myself. Does that read as 9 hours labor to remove the pumpkin, set up gears and reinstall? I was reading about just buying a complete 1le diff which would save on a lot of labor, but those all seem to go for 1100-1400 now which really doesn't end up much different Last edited by chuckie669; 08-15-2018 at 09:22 PM.

08-15-2018, 07:41 PM	#4
Matt8892(2) Drives: Black camaro 2ss 45th Join Date: Jan 2018 Location: Central NJ Posts: 359	Or wait and buy the complete diff from someone selling. I got the entire diff for 800 then sold my 3.45 diff for 500. Only 300 bucks out of pocket.

08-15-2018, 10:31 PM	#7
KB85 Banned Drives: Camaro Join Date: Aug 2018 Location: Ohio Posts: 54	I paid about 1k for everything. If you buy a 1le diff are you a m6 or a6? Manuals have different parts

08-15-2018, 11:31 PM	#8
rontammy0 Account Suspended Drives: 2011 2SS/ RS INFERNO ORANGE L99 Join Date: Dec 2012 Location: Alliston Ontario Canada Posts: 9,057 View My Garage	Op the shop that did mine has a gear and suspension shop they work with. The gear shop has a few diffs in stock with different gear set ups. My shop simply removed my diff and replaced it with one that had the 391s already installed Then sent my diff in as an exchange. I think it was around $1400.

08-16-2018, 08:57 AM	#9
Talladega Drives: 2013 Camaro SS Join Date: Oct 2016 Location: Arvada, CO Posts: 686	I had the Chevy dealer down the street put mine in and it was $477 for the labor, $58.68 for the oil, and I provided the gear kit. The gear kit with seals, bearings, bolts additive etc was about $450. All in it was around $1,000 for me, so $1,700 seems steep to me.

08-17-2018, 12:08 AM	#10
FKNGRSY Drives: 2014 1SS Join Date: May 2014 Location: Canada Posts: 158	A friend did my 4.10 Install after hours at the dealership for a case of beer. I guess I owe him a couple more cases

08-18-2018, 11:14 AM	#11
LCPLPunk USA-1 Drives: 2010 Camaro SS L99 Join Date: Jul 2016 Location: Near DC Posts: 1,893 View My Garage	I just had mine done about a week ago and it was $950 after tax. Best mod so far!!! __________________ "A Camaro in the garage is safe, but that's not what Camaros are built for..." R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete

08-18-2018, 11:48 AM	#12
chuckie669 Drives: 2011 ss Join Date: Sep 2015 Location: E-TX Posts: 764	Out of curiosity, what all did they do? Just 3.91 kit? I'm looking at 4 components for my primary charges. the kit, then the bearing set. Removal and install of pumpkin and setting up the gears. I'm having my driveshaft, repaired/ replaced too so that won't be a labor cost twice. So that's good

08-23-2018, 02:24 PM	#14
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,402	Ok, question for you guys, I am going to do the 3.91 gear swap in my L99 that is stalled and cammed with a custom dyno tune, if I have my dealership does the install our Camaro club gets 15% discount on parts and labor, I can get it done for a good price I think, going with the GM Performance kit that has everything, my question is when they flash my computer to correct the speedo for the gear change, will that interfere with my tune we have on the trans now? For the stall and shift points? Or would I have to drive down to my builder / tuner to have the trans retuned. Just wondering. Thanks guys.. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.