3.90 ratio on an auto - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

soloknight6 · 12-19-2012, 02:57 PM

So, what all needs to be done to fit the 1le ratio into an auto? I was considering purchasing an ss diff, what else would I need? How would it bolt up? How involved would the procedure be? What would you expect to pay in labor? And how would the LFX react to the ratio?

POWERFREAK · 12-19-2012, 03:07 PM

you'll need the SS diff, w/ axles and back half of the driveshaft, and will also have to swap out the wheel hubs so the axles fit.

SC2150 · 12-19-2012, 04:27 PM

And the SS hubs.

We have several complete swap sets in stock.

Apex Motorsports · 12-19-2012, 05:00 PM

Quote:

Originally Posted by SC2150

And the SS hubs.

We have several complete swap sets in stock.

That is what I am talking about.

soloknight6 · 12-19-2012, 05:22 PM

Quote:

Originally Posted by SC2150

And the SS hubs.

We have several complete swap sets in stock.

Sweet! PM me a price on the complete swap set. I wanna start putting some pennies away.

C-redfly · 12-22-2012, 05:55 PM

I been waiting to see this happen. 3.90's in our LFX.

Henry G. · 12-22-2012, 07:37 PM

What does it take to swap a manual trans car gears out? And about making the computer recognize/adapt for the axle ratio change, I was thinking about a 3.73 maybe?

C-redfly · 12-22-2012, 08:45 PM

I would do a 3.90 or 4.11 with the M6. The ss gears can be used on the v6 m6, lucky you. The v6 a6 requires a complete differential and hub swap to run 3.90

Henry G. · 12-23-2012, 12:33 AM

Cool, I had read that somewhere too, manuals get the eaton G80 locker, I have one in each of my chevy trucks too, great locker. About the reprogram, anyone? Thx

POWERFREAK · 12-23-2012, 06:28 AM

Quote:

Originally Posted by Henry G.

Cool, I had read that somewhere too, manuals get the eaton G80 locker, I have one in each of my chevy trucks too, great locker. About the reprogram, anyone? Thx

Yes, you'll need a tune to recalibrate the speedometer.

Henry G. · 12-23-2012, 07:02 PM

Quote:

Originally Posted by POWERFREAK

Yes, you'll need a tune to recalibrate the speedometer.

Yeah, a warranty violating tune right? Wonder if the dealer would do it? Haha

POWERFREAK · 12-25-2012, 09:09 PM

Quote:

Originally Posted by Henry G.

Yeah, a warranty violating tune right? Wonder if the dealer would do it? Haha

If you change the gears in the rear, theoretically your drivetrain warranty is toast anyway.

Henry G. · 12-25-2012, 11:07 PM

Yeah I cant do that. I drive this car too much to let a chickenshit dealer deny a valid warranty claim because of gears. Guess I'm waiting until 100k, which should be about 2-3 years the way I'm racking up miles right now.

v6sonoma · 12-27-2012, 12:57 PM

It's expensive to do in the V6 auto. So much needs to change. The manual can be done on the cheap with just a gear swap though!

Only need to tune the auto. I believe the manual is the same as the V8 and doesn't require a tune to recalibrate. Auto needs it to correct shift points etc.

12-19-2012, 02:57 PM	#1
soloknight6 SoCal HT5! SD Drives: 2016 red hot 2ss M6 Join Date: Nov 2011 Location: San Diego CA, Posts: 1,929	3.90 ratio on an auto So, what all needs to be done to fit the 1le ratio into an auto? I was considering purchasing an ss diff, what else would I need? How would it bolt up? How involved would the procedure be? What would you expect to pay in labor? And how would the LFX react to the ratio? __________________ http://www.camaro5.com/forums/showth...37#post5437037 By my deeds, I honor him. V8!!!

12-19-2012, 03:07 PM	#2
POWERFREAK I.AM. Drives: 2011 2SS/RS/A6 cammed-n-whippled Join Date: Oct 2008 Location: NY Posts: 2,638	you'll need the SS diff, w/ axles and back half of the driveshaft, and will also have to swap out the wheel hubs so the axles fit. __________________ NY5thgen.com

12-27-2012, 12:57 PM	#14
v6sonoma Drives: 2010 SS RS Join Date: Jun 2009 Location: Providence, RI Posts: 8,108 View My Garage	It's expensive to do in the V6 auto. So much needs to change. The manual can be done on the cheap with just a gear swap though! Only need to tune the auto. I believe the manual is the same as the V8 and doesn't require a tune to recalibrate. Auto needs it to correct shift points etc. __________________ Mods: BBK Intake, BBK LT's and High Flow Cats, Corsa Cat-back exhaust, Hurst short throw shifter, SLP skip-shift eliminator. 7/1/09 Placed order for IOM/IO int/ SS/RS 6M 9/26/09 Took delivery!

12-19-2012, 04:27 PM	#3
SC2150 Account Suspended Drives: 2012 Camaro RS, RX supercharged Join Date: Dec 2009 Location: Bradenton, FL Posts: 6,063	And the SS hubs. We have several complete swap sets in stock.

12-22-2012, 05:55 PM	#6
C-redfly Drives: 2013 VR vert ZL1 Join Date: Aug 2012 Location: Los Angeles Posts: 1,495	I been waiting to see this happen. 3.90's in our LFX.

12-22-2012, 07:37 PM	#7
Henry G. Drives: 2012 Camaro LFX,CAI,DynomaxVT,RX CC Join Date: Feb 2012 Location: So Cal Mtns Posts: 526	What does it take to swap a manual trans car gears out? And about making the computer recognize/adapt for the axle ratio change, I was thinking about a 3.73 maybe?

12-22-2012, 08:45 PM	#8
C-redfly Drives: 2013 VR vert ZL1 Join Date: Aug 2012 Location: Los Angeles Posts: 1,495	I would do a 3.90 or 4.11 with the M6. The ss gears can be used on the v6 m6, lucky you. The v6 a6 requires a complete differential and hub swap to run 3.90

12-23-2012, 12:33 AM	#9
Henry G. Drives: 2012 Camaro LFX,CAI,DynomaxVT,RX CC Join Date: Feb 2012 Location: So Cal Mtns Posts: 526	Cool, I had read that somewhere too, manuals get the eaton G80 locker, I have one in each of my chevy trucks too, great locker. About the reprogram, anyone? Thx

12-25-2012, 11:07 PM	#13
Henry G. Drives: 2012 Camaro LFX,CAI,DynomaxVT,RX CC Join Date: Feb 2012 Location: So Cal Mtns Posts: 526	Yeah I cant do that. I drive this car too much to let a chickenshit dealer deny a valid warranty claim because of gears. Guess I'm waiting until 100k, which should be about 2-3 years the way I'm racking up miles right now.