my friend has a question - Mustang Evolution

Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 2005-2010 Mustang GT



Reply
 
Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 06-06-2009, 12:53 PM   #1
Registered User
Newbie
 
Join Date: Jun 2009
Region: Illinois
Posts: 6
my friend has a question

He has a 2007 v6 mustang manual trans and was wondering if he should change the gear ratio to 3.75 or 4.1?
Skyler1991 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-06-2009, 06:59 PM   #2
Registered Member
Regular
 
sonicpony03's Avatar
 
Join Date: Dec 2007
Location: WI
Region: Wisconsin
Posts: 5,411
Re: my friend has a question

I would say 3.73's would be the best for his mustang.
I've heard that 4.10's can be too tall for the manuals, and gas mileage is slightly affected if one does a lot of highway miles due to the increase in rpms that the car is running at.

The common rule is 3.73's for manuals, and 4.10's for autos.
But I think it depends on the driver, the driving situation (racing, daily driver, etc.), and the car itself (how it is tuned and set to perform)

I think the stock one's come with 3.27's, so he would definitely feel the difference with3.73's. 3.55's and 3.90's are another option if he want's less or right between the other two, but from what I've heard 3.73's are the common ratio for manuals.

Basically, it depends on what he wants from the car. If he wants better acceleration and a more torque-like feel, 3.73's are his best bet. Just make sure to have a tlok installed when doing the gears, this will give positive traction to both wheels which will make for better launches and two wheel burnouts.

If he plans on adding a power adder in the future, I would consider an 8.8inch rearend from a GT. Newtakeoff has the unit with the taller gears already installed. Or you could pick up a used one and get a rebuild kit.
__________________


12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros

03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB
sonicpony03 is offline   Reply With Quote
Old 06-06-2009, 09:51 PM   #3
Registered User
Newbie
 
Join Date: Jun 2009
Region: Illinois
Posts: 6
Re: my friend has a question

Thanks a lot man! Thats exactly what he wanted to know.
Skyler1991 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-06-2009, 11:00 PM   #4
Registered Member
Regular
 
sonicpony03's Avatar
 
Join Date: Dec 2007
Location: WI
Region: Wisconsin
Posts: 5,411
Re: my friend has a question

No problem man. Upgrading gears and a tlok is the best thing your friend can do to improve his mustang. It can be costly, usually anywhere from 500-1000 dollars for install and parts, but it is definitely worth it.

There are two important things regarding the install.

1. Make sure the shop is reputable, trustworthy, and will do the install correct the first time, because it will cost even more to have it redone again.

Here is a quote from the almighty SpectorV here on the forum:

"dont skimp on this install as doing it wrong can cost you much more than just a redo as once the gears get worn wrong.. you have to buy new ones.

Basically if the shop tells you when they install them they set the backlash, pinion crush sleeve, gear wear pattern and the likes then they know what they are doing, you dont just bolt them up and go.

Get a warranty (here is the tricky part for some) IN WRITING stating that you are covered for X miles from whine or breakage or any other issues. If one of the little bolts around the ring gear comes off say bye bye to the entire rear end."


2. A tuner is needed to adjust for the taller gears. It will correct the speedometer after the install. He can either buy one, which can be used to boost hp/gas mileage, raise rev limiters, etc., or have the shop tune it if they do so.
__________________


12 Black GT500 SVT PP l VMP TVS l JLT123 l O/R X l 28x11.50Rx15 M/T Street R's l BMR Suspension l Recaros

03 Sonic Blue 3.8 / 17 Magnetic Fusion Sport 2.7 EB
sonicpony03 is offline   Reply With Quote
Old 06-11-2009, 09:17 AM   #5
Registered Member
Regular
 
jimbullit's Avatar
 
Join Date: Apr 2009
Region: Texas
Posts: 706
Re: my friend has a question

Changing the ring and pinon is a time intensive upgrade-when done properly. The technician/shop-needs to have all of the tools and skill-as they have to be able to "install/uninstall" the gears-until all of the adjusting is correct-especially the run out. Most technicians do not know how to do this properly-as all of the adjustment(s) are "old school"-and they have never done it.
__________________
2011 Sterling Gray GT: 5.0, 6speed, Security Pkg., 3:73 Limited Slip,HID headlamps, stripe delete,19" Nickle Luster Wheels, Magnaflow Street Series axle backs

Sold:2008 Vapor GT:Borla Stinger, Hurst, AFM PowerPipe,Velocity MAF,Steeda Underdrive Pulleys, Hyper-Black CS69 Wheels
jimbullit is offline   Reply With Quote
Old 06-11-2009, 09:37 AM   #6
Registered Member
Regular
 
2007STANG's Avatar
 
Join Date: Mar 2009
Region: West Virgina
Posts: 295
Re: my friend has a question

How to install your own gears!!! - Mustang Forums at StangNet here is a post on installing gears but alot of critical steps are not mentioned like setting the gaers
__________________
Billet fuel door, Daiblo 91 Tune, Xenon ram air hood scoop, MAC performance direct fit headers, 3" 304 SS Dual exhaust, hood pin appearance kit, Red l.E.D. underbody lights, Boy Racer rear wing, Helix power tower plus Throttle body spacer, ventvisor deflector, Aeroform chin spoiler, SVT 18" 9.5 45/255 frount SVT 18" 9.5 40/285 rear trire , GTO rear blackout kit, OEM rear splash guards, Steeda CAI, 8.8 rear axle with 3.73.1 LSD, killer Glass Hose, Smoked Window Louvers by GT Styling 35% Tenting on rear and side windows.
2007STANG is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Mustang Evolution > 1979-2015 Mustang GT || Tech and Talk > 2005-2010 Mustang GT

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
A New Friend Brent Pictures and Videos 31 06-21-2007 06:52 PM
Int. Question For A Friend Dark02Pony Mustang Audio & Video 8 06-13-2005 07:34 PM
Question For A Friend Dark02Pony Pre-2005 V6 Mustang 2 01-31-2005 06:53 PM
Friend wants a question answered... NJStang86 Pre-2005 V6 Mustang 5 09-07-2004 10:36 PM
say hello to my little friend tire The Bar 17 04-13-2004 05:23 PM

» Like Us On Facebook



03:34 PM


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0

MustangEvolution.com is in no way associated with or endorsed by Ford Motor Company.