2012 automatic lfx gear swap to 3.73 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rutah72 · 07-19-2016, 09:02 AM

Ive been looking into gear swaps for the automatic v6 and am having a hard time figuring out exactly what needs to be done. Do I need to get a SS rear end then change the gears or is it there any one out there that sells them for the v6??

IneedAZ · 07-19-2016, 10:05 AM

Yes, v6 auto needs a SS rear, hubs, and axles. I started with 3.73 and then swapped it for the 3.91. You will find the 3.91 is much cheaper and make the car feel stronger even though numerically 3.73 and 3.91 are close.

rutah72 · 07-19-2016, 10:07 AM

Will any SS rear end work or will it need to be from an automatic as well ? And thank you for your input much appreciated.

IneedAZ · 07-19-2016, 10:33 AM

Quote:

Originally Posted by rutah72

Will any SS rear end work or will it need to be from an automatic as well ? And thank you for your input much appreciated.

any, even the v6 manual uses the SS rear

camrytt · 07-19-2016, 01:19 PM

Let me know how it goes and a ballpark figure for pricing. I really want to do this but I feel like I don't know enough about it to pull it off myself

Kenny Camaro · 07-19-2016, 04:59 PM

Quote:

Originally Posted by rutah72

Ive been looking into gear swaps for the automatic v6 and am having a hard time figuring out exactly what needs to be done. Do I need to get a SS rear end then change the gears or is it there any one out there that sells them for the v6??

I looked into it back in April/may. In the classified members section you can find a used LSD housing and diff. for between 500-750 dollars depending on miles and what gears are currently in it. Talked to a transmission/rear end specialist and if I brought him the rear end, and he bench rebuilt it with 3.73 gears it was1100 dollars. 450 for American axle gears, 3.73, about 200 for bearings, races, onetime use bolts, gaskets. About 550 labor. Then used hubs and axles vary on mileage and how bad the seller wants to get rid of them, plan on at least 200 or so. Then the install, it ain't easy. And it ain't cheap to have someone do it, 4-6 hours at whatever rate. Then you need to have a tuner change the ecu to your new gear ratio, I was told it was 100 to purchase the license to get into the ecu and whatever the tech/tuner would charge for the change. Cheap end, if you do the extract and install ,a little over two grand, pay someone to remove and install around three grand. You may find cheaper parts or labor, oh yeah the drive shaft will be needed also. The 3.91 gears are cheaper thru a GM dealership, as they are used in the 1le ss Camaro.

camrytt · 07-19-2016, 06:26 PM

Oof yea that's going to stay out of my realm of possibilities, thanks for all the info Kenny

Kenny Camaro · 07-19-2016, 07:19 PM

No problem. I put it on the back burner myself, It would be nice though.

camrytt · 07-19-2016, 07:22 PM

I was looking at v8s last weekend thinking about switching, and of course getting the 1le package and gears rolled into my loan. Ha!

Kenny Camaro · 07-19-2016, 07:25 PM

Quote:

Originally Posted by rutah72

Ive been looking into gear swaps for the automatic v6 and am having a hard time figuring out exactly what needs to be done. Do I need to get a SS rear end then change the gears or is it there any one out there that sells them for the v6??

Richmond has a 3.55 ring and pinion set for the automatic v-6, it only fits on the 2LS 2.92 ratio differental carrier. It will not fit a 1LT or 2LT auto, ONLY 2LS model.

Kenny Camaro · 07-19-2016, 07:29 PM

Yeah , I was like for three grand, i could sell my car , take the money from that plus the 3g's, and get a v-8 that would be a better alottment of resources. Or not.

camrytt · 07-19-2016, 08:10 PM

Quote:

Originally Posted by Kenny Camaro

Yeah , I was like for three grand, i could sell my car , take the money from that plus the 3g's, and get a v-8 that would be a better alottment of resources. Or not.

Exactly. I'm still paying for mine too, so the monthly payment to get into a lower mile ss would be like 20 more a month and my insurance would be cheaper. It's only like 16 more hp but 60 more torque....and then what 400 bucks for the 1le gears installed? Bah.

If I come into some money I'll have a hard choice on turbo v6 vs v8

Kenny Camaro · 07-19-2016, 08:15 PM

That new roots style s/c has my intrest peeked,or not says the man who has a turbo charger.

07-19-2016, 09:02 AM	#1
rutah72 Drives: 2012 v6 lfx automatic silver Join Date: Feb 2015 Location: United States Posts: 7	2012 automatic lfx gear swap to 3.73 Ive been looking into gear swaps for the automatic v6 and am having a hard time figuring out exactly what needs to be done. Do I need to get a SS rear end then change the gears or is it there any one out there that sells them for the v6??

07-19-2016, 10:05 AM	#2
IneedAZ Drives: 2017 ZL1 A10 & 2021 BMW M340i x Dr Join Date: Mar 2009 Location: Tampa Posts: 5,111 View My Garage	Yes, v6 auto needs a SS rear, hubs, and axles. I started with 3.73 and then swapped it for the 3.91. You will find the 3.91 is much cheaper and make the car feel stronger even though numerically 3.73 and 3.91 are close. __________________ Sold 2012 2LT RS 12.3@112 old setup Sold 1967 Camaro Pro Street. Ran 10's mild BB on NOS. 2017 HyperBlue ZL1 A10 Born 3/17/17Delivered 4/08/17 2020 Build: Mag2650, BTR Stage2, NW103, BG, 14% lower, 90mm upper, ARH 2" Long system w/no cats, SW Legend mufflers. 807hp/762tq on 93 gas and 848hp/792tq on e47 Sold 2018 (Go Mango) Dodge Charger Daytona 392 Daily Driver Daily Driver 2021 BMW M340i Xdrive

07-19-2016, 01:19 PM	#5
camrytt Drives: 2017 ZL1 A10 Join Date: Sep 2014 Location: Raleigh, NC Posts: 592	Let me know how it goes and a ballpark figure for pricing. I really want to do this but I feel like I don't know enough about it to pull it off myself __________________ Current: 2017 ZL1 A10 previous: 2019 1SS A10 previous: '14 L99, CAI intake, vmax ported tb, e85 kit, stage 2 cnc heads, speed engineering long tubes, custom high flows, resonated x pipe, muffler delete, qtp cut outs, gpi ss3 vvt Cam, zl1 pump and injectors, fti triple disc, mayhem motorsports trans cooler and tune, ngk spark plugs +red msd wires, 3.91 gears. Past: '12 LFX, full bolt ons + E85, 302hp/267tq

07-19-2016, 06:26 PM	#7
camrytt Drives: 2017 ZL1 A10 Join Date: Sep 2014 Location: Raleigh, NC Posts: 592	Oof yea that's going to stay out of my realm of possibilities, thanks for all the info Kenny __________________ Current: 2017 ZL1 A10 previous: 2019 1SS A10 previous: '14 L99, CAI intake, vmax ported tb, e85 kit, stage 2 cnc heads, speed engineering long tubes, custom high flows, resonated x pipe, muffler delete, qtp cut outs, gpi ss3 vvt Cam, zl1 pump and injectors, fti triple disc, mayhem motorsports trans cooler and tune, ngk spark plugs +red msd wires, 3.91 gears. Past: '12 LFX, full bolt ons + E85, 302hp/267tq

07-19-2016, 07:22 PM	#9
camrytt Drives: 2017 ZL1 A10 Join Date: Sep 2014 Location: Raleigh, NC Posts: 592	I was looking at v8s last weekend thinking about switching, and of course getting the 1le package and gears rolled into my loan. Ha! __________________ Current: 2017 ZL1 A10 previous: 2019 1SS A10 previous: '14 L99, CAI intake, vmax ported tb, e85 kit, stage 2 cnc heads, speed engineering long tubes, custom high flows, resonated x pipe, muffler delete, qtp cut outs, gpi ss3 vvt Cam, zl1 pump and injectors, fti triple disc, mayhem motorsports trans cooler and tune, ngk spark plugs +red msd wires, 3.91 gears. Past: '12 LFX, full bolt ons + E85, 302hp/267tq

07-19-2016, 10:07 AM	#3
rutah72 Drives: 2012 v6 lfx automatic silver Join Date: Feb 2015 Location: United States Posts: 7	Will any SS rear end work or will it need to be from an automatic as well ? And thank you for your input much appreciated.

07-19-2016, 07:19 PM	#8
Kenny Camaro Account Suspended Drives: 2013 1LT RS Camaro Join Date: Apr 2016 Location: Southeast Michigan Posts: 3,494	No problem. I put it on the back burner myself, It would be nice though.

07-19-2016, 07:29 PM	#11
Kenny Camaro Account Suspended Drives: 2013 1LT RS Camaro Join Date: Apr 2016 Location: Southeast Michigan Posts: 3,494	Yeah , I was like for three grand, i could sell my car , take the money from that plus the 3g's, and get a v-8 that would be a better alottment of resources. Or not.

07-19-2016, 08:15 PM	#13
Kenny Camaro Account Suspended Drives: 2013 1LT RS Camaro Join Date: Apr 2016 Location: Southeast Michigan Posts: 3,494	That new roots style s/c has my intrest peeked,or not says the man who has a turbo charger. Last edited by Kenny Camaro; 07-19-2016 at 09:11 PM.