Motivegear performance? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

GAD · 07-25-2020, 01:39 AM

Found a 3.91 Ring & Pinion + Master Bearing Kit On eBay from MoriveGear Performance. 475$ any good?

Joe M 2012 2SS · 07-25-2020, 05:58 AM

I'd stay away from Motive. The machining on their gears is not good quality. Even having backlash set perfect, your going to have excessive gear whine.

Go with AAM instead. Their kit is $90 less as well. It's listed as
2010-2015 Chevy Camaro V8 GM 8.6" IRS 218MM 3.91 Ring and Pinion Master Gear Pkg on Ebay.

Since your taking the differential apart, I'd also go ahead and replace the factory clutch pack with an Eaton True Trac.

Warship2k15 · 07-25-2020, 06:28 AM

Go with the Chevy ones or whomever makes the Chevrolet ones.
Most people swapping gears to 3.91 Chevy ones don’t need anything shimmed if just changing the gears.

DMan918 · 07-25-2020, 07:51 AM

No doubt if going 3.91 the gm gear is the way to go. What about those going 4.11 though?

Camarokid1996 · 07-25-2020, 08:41 AM

I'd personally go the GM route for 3.91's. I installed Motive 4.11's in my M6 and am very happy with the performance and reliability. Over 3000 miles without issues so far

oldman14ss · 07-25-2020, 02:39 PM

I went with AAM gears for mine. I got mine thru lingenfelter performance. the have the bearing kit also. I got the 3:70's . they also have the 3:91 cheap, plus bearing kit. mine machined so tight didn't need pinion shim. NO WHINE!!! perfect! other vendors on here can gladly help you with your decision. this is the best group of people on this forum to guide you. these folks help this oldman all the time.

2011SS2SS · 07-26-2020, 05:13 AM

I am newer to the 5th Gen world & am just getting my mods done. I am looking at 3.91 gears now.

I am needing info though. If I swap out the rear diff w/ another rear diff that has 3.91 gears, say from a 1LE... Do I have to change the axle shafts?? Anything else I need to be looking for as well?? I did my headers last week & am looking to move to the gears next. I am mechanically inclined, but this will be my 1st experience with IRS set ups... Any info/advice you guys can offer will be appreciated.

I am thinking just finding a rear diff assembly w/3.91 gears will make for a pretty simple swap. However, I am new to it & do not want to under-estimate the challenge or run into it not having any info...

Thanks.

Warship2k15 · 07-26-2020, 07:41 AM

The 3.91 diff bolts right in.The SS axle shafts while being a little different from the le works with the Le diff.
I would change the axle seals.
Do a search for differential replace etc.
What hp and torque are you looking for If going over 600 rwhp then you might want to look at the zl1 diff swap.

2011SS2SS · 07-26-2020, 10:19 PM

Quote:

Originally Posted by Warship2k15

The 3.91 diff bolts right in.The SS axle shafts while being a little different from the le works with the Le diff.
I would change the axle seals.
Do a search for differential replace etc.
What hp and torque are you looking for If going over 600 rwhp then you might want to look at the zl1 diff swap.

Right now I just have CAI, Headers w/cat delete, Full 3 inch exhaust, & a street tune... Dyno was down, but I will be getting on it next week to get numbers & do some final adjustments... I think that will get me pretty close to 400 at the wheels... Close anyway.

I want to do the 3.91 gears & then will look at cam & intake/TB kits this winter...

InFiD3ViL · 07-26-2020, 11:21 PM

I will be using AAM when I do mine for sure. This way I will know for certain there will be no issues.

07-25-2020, 01:39 AM	#1
GAD Drives: Silver 2014 Camaro 2SS Join Date: Dec 2018 Location: Knoxville Posts: 225	Motivegear performance? Found a 3.91 Ring & Pinion + Master Bearing Kit On eBay from MoriveGear Performance. 475$ any good? __________________ 2014 Silver 2SS L99 with Roto-Fab CAI, Kooks LT Headers, Kooks Cat-less 3” exhaust, TS Stage 3.2 VVT CAM, Circle D 3200 Stall, E85 Kit, FIC 850cc injectors and Elite Engineering Catch Can. Dynoed at 478rwhp.

07-25-2020, 05:58 AM	#2
Joe M 2012 2SS Drives: 2012 2SS Join Date: Nov 2014 Location: Shelby NC Posts: 2,549 View My Garage	I'd stay away from Motive. The machining on their gears is not good quality. Even having backlash set perfect, your going to have excessive gear whine. Go with AAM instead. Their kit is $90 less as well. It's listed as 2010-2015 Chevy Camaro V8 GM 8.6" IRS 218MM 3.91 Ring and Pinion Master Gear Pkg on Ebay. Since your taking the differential apart, I'd also go ahead and replace the factory clutch pack with an Eaton True Trac. __________________ Roto-Fab intake, SW 1 7/8" LT w/hi flow cats, Flowmaster outlaw exhaust, UDP, 160* stat, Circle D 3200, Moroso catch can, TCI line lock, Zex Nitrous 125 shot, 3.91 gear, Eaton True-trac, DSS 1000hp axles.

07-26-2020, 11:21 PM	#10
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,574	I will be using AAM when I do mine for sure. This way I will know for certain there will be no issues. __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI

07-25-2020, 06:28 AM	#3
Warship2k15 Drives: 2010 Camaro 2SS Join Date: May 2016 Location: Kissimmee Posts: 158	Go with the Chevy ones or whomever makes the Chevrolet ones. Most people swapping gears to 3.91 Chevy ones don’t need anything shimmed if just changing the gears.

07-25-2020, 07:51 AM	#4
DMan918 Drives: 2012 Camaro SS Convertible 6MT Join Date: Jun 2020 Location: Algonquin, IL Posts: 258	No doubt if going 3.91 the gm gear is the way to go. What about those going 4.11 though?

07-25-2020, 08:41 AM	#5
Camarokid1996 Account Suspended Drives: 2010 Chevy Camaro 2ss/rs TF edition Join Date: Feb 2019 Location: Michigan Posts: 125	I'd personally go the GM route for 3.91's. I installed Motive 4.11's in my M6 and am very happy with the performance and reliability. Over 3000 miles without issues so far

07-25-2020, 02:39 PM	#6
oldman14ss Drives: 2014 1ss camaro Join Date: Jul 2017 Location: missouri Posts: 705	I went with AAM gears for mine. I got mine thru lingenfelter performance. the have the bearing kit also. I got the 3:70's . they also have the 3:91 cheap, plus bearing kit. mine machined so tight didn't need pinion shim. NO WHINE!!! perfect! other vendors on here can gladly help you with your decision. this is the best group of people on this forum to guide you. these folks help this oldman all the time.

07-26-2020, 05:13 AM	#7
2011SS2SS Drives: 2011 Camaro SS w/2SS Join Date: Mar 2020 Location: KY Posts: 60	I am newer to the 5th Gen world & am just getting my mods done. I am looking at 3.91 gears now. I am needing info though. If I swap out the rear diff w/ another rear diff that has 3.91 gears, say from a 1LE... Do I have to change the axle shafts?? Anything else I need to be looking for as well?? I did my headers last week & am looking to move to the gears next. I am mechanically inclined, but this will be my 1st experience with IRS set ups... Any info/advice you guys can offer will be appreciated. I am thinking just finding a rear diff assembly w/3.91 gears will make for a pretty simple swap. However, I am new to it & do not want to under-estimate the challenge or run into it not having any info... Thanks.

07-26-2020, 07:41 AM	#8
Warship2k15 Drives: 2010 Camaro 2SS Join Date: May 2016 Location: Kissimmee Posts: 158	The 3.91 diff bolts right in.The SS axle shafts while being a little different from the le works with the Le diff. I would change the axle seals. Do a search for differential replace etc. What hp and torque are you looking for If going over 600 rwhp then you might want to look at the zl1 diff swap.