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10-28-2014, 05:56 AM
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#1 |
 Drives: 2013 2SS RS camaro Join Date: Apr 2013
Location: Savannah Ga
Posts: 112
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3.91 gears install question
3.91 gears install question
I will be having the 3.91 gears installed in my 2013 ss (m6) soon. i want to know was there any regrets after the install for anyone who had them installed. How bad is mph off before recalibration. The reason i ask is if i have them installed now i do not have anyone to do the calibration here in Sav. I will be camming the car around the first of the year(in ATL) and would have it calibrated then. |
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10-28-2014, 07:22 AM
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#2 |
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You could always use a smartphone app or gps to see how far off it is.
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10-28-2014, 07:29 AM
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#3 | |
  
Drives: RY 2011 2SS A6 Join Date: Jul 2010
Location: Virginia
Posts: 997
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Quote:
Your MPH would be off by 13%, I do believe.
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 Dry sump LS7, cage, JPSS suspension, Wilwood brakes, fire suppression, ARH 3" headers/exhaust, Z/28 DSSV coilovers, Kirkey seats, TeamTech 6-point harnesses, 19" Forgeline GA3R, 325/30R19 Re11 tires, oil cooler, monster JPSS splitter/wickerbill, CAI, brake ducts. |
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10-28-2014, 08:17 AM
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#4 |
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145lb Powerlifter
Drives: 2013 Camaro 2SS RS LS3 Join Date: Jan 2014
Location: Conshohocken, PA
Posts: 1,146
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Remember your odometer will be reading incorrectly as well. You'll be racking up mileage faster because the computer will think you're going faster than you actually are! This will really rack up some false mileage over months. But if you're camming the car I assume you're not worried about resale. Just a heads up.
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10-28-2014, 12:06 PM
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#5 |
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Drives: 2013 2SS RS camaro Join Date: Apr 2013
Location: Savannah Ga
Posts: 112
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Thanks for the info guys. I didn't think changing the gear ratio would affect the odometer.
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10-28-2014, 12:09 PM
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#6 |
Drives: 2010 Camaro 2SS/RS Join Date: Aug 2012
Location: Cordova, TN
Posts: 774
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Who is installing your gears? A shop? A friend?
Generally, if you have the work done at the dealer, they will recalibrate for you, as well as maintain the warranty on your drivetrain.
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2010 Camaro 2SS M6
2" Stainless Power Longtube Headers 3" Full exhaust w/ Off-Road H-Pipe Bo White Ported Throttle Body Hurst Short Throw Shifter Best Time: 12.43 @ 114, 1.99 60' on stock wheels and stock tires Build Thread |
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10-28-2014, 07:13 PM
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#7 |
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Drives: 2013 2SS RS camaro Join Date: Apr 2013
Location: Savannah Ga
Posts: 112
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A shop will be doing the install. The dealer will install and warranty (12 months)for around $2000. The will do it for $350.
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11-15-2014, 12:53 PM
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#8 | |
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Quote:
Speedo was off quite a bit, I'd say +12 MPH and 2000 RPM in 6th. Also yes, your mileage will tick up faster. I did my own install so I had to have the recal done by a local tuner MTI racing. Cost me 200 bucks
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2016 2SS 6-Speed Manual... Magnetic Ride Control, Dual Mode Exhaust, Sunroof, Adrenaline Red Interior, Mylink W/Navigation
Added Edelbrock E-Force Supercharger, GM 1LE Sway Bars, BMR Upper/Lower Trailing Arms, BMR Upper Control Arms. BMR Front/Rear Chassis Braces, BMR Tunnel Brace. GM Red knee Pads, GM Black Front Splitter, GM SEMA Concept Grille, GM Dark Taillights, GM Ground Effects package... Savini Di Forza BM-14 Gloss Black Wheels 9's front, 10's rear. |
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11-15-2014, 01:06 PM
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#9 |
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Drives: '15 Z06, '01 NBM SS, '97 SS Join Date: May 2009
Location: Rio Rancho, NM
Posts: 12,170
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Another tip is to make sure that your installer doesn't pinch or break a VSS. Simple fix, but I broke one once when I first did a set and it drove me batty trying to figure out why my speedo recalibration wouldn't take.
It was a $27 part.  Simple fix but it makes the dashboard light up something fierce. Good luck, do it, and don't look back. |
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11-15-2014, 01:17 PM
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#10 |
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'It's an experiment'
Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014
Location: Dallas TX
Posts: 8,695
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Ditto. Love mine. No regrets...
-Don |
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11-17-2014, 10:41 PM
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#11 |
Drives: A wrench Join Date: Jan 2010
Location: East Atlanta
Posts: 353
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We do bunches and bunches of 3.91 installs. I've yet to have someone call me back and say they don't like them. These big heavy tanks called the 5th Gen need the gearing to get moving.
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11-18-2014, 07:55 AM
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#12 |
        
Drives: My wife crazy with my C5 usage. Join Date: Apr 2009
Location: DFW
Posts: 6,558
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Do yourself a favor and get a TruTrac while you are doing the gears. The factory unit is garbage will fail, leaving you doing one wheel burnouts of shame.
They run about $500, but the money you save now on labor will basically pay for it. As for the gears, best mod for the $$$ you can do to make this car feel alive. 1st gear is over real quick, 2nd goes almost as quick and the others pull really nice. RPM's @ 80 in 6th are right at 2200. Sent from my iPhone using Tapatalk
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