Rear Gears - Lone Star Stangs

06BlackGT · 01-08-2007, 10:28 PM

Has anyone changed there rear end gears? If so what did you put in I'm looking to do many things to my 06 and wanted some feed back such as gas mileage, performance ect.

keg65 · 01-08-2007, 11:49 PM

I want to do the same.
I hear that 4.10's really liven it up.
Then a magazine says 3.73's will keep you mileage reasonable.
I have an automatic trans, so which one?

Machine · 01-09-2007, 10:32 AM

For streetability, 4.10's at the most for auto trannys, 4:30's for manuals. Also keep in mind that adding a power adder will affect that as well.

I'm running 3.90's because I have a 3000 stall torque converter and I plan on adding a s/c this year.

just my .02

cooksey07 · 01-09-2007, 01:32 PM

1998 GT. Installed 4:10's. Gas mileage considerably down. Lots of fun and very responsive. Would have gone with 3.73's but alot of techs say 4:10 was best for year/model

**thesource** · 01-09-2007, 03:40 PM

The 07 I just bought had 3.31's in it . As soon as a programmer is out for the car , I will be installing 3.73's and a girdle in the back .

Tripod · 01-09-2007, 05:34 PM

I went with 3.73's. Also automatic here....

I almost went 4.10's but I've been reading about some issues with the 4.10's that didn't make too comfy with the idea.

I hear the upgraded stall also makes a huge difference.

Right now I am seeing a slight decrease in mileage, about 22 mpg is my higway average right now vs the 24 it was at when stock. Thanks to the SLPs the car is also a bit louder on the highway, 75 mph translates to about 2500 rpms, which is hummin' a bit, but not terrible. Besides, the Shaker 1000 takes cars of that with relative ease, hehe....

One thing is for sure, gears do make a difference.....I plan on seeing just how much tomorrow at the track....

keg65 · 01-09-2007, 10:22 PM

Jay Tee did a How To 4.10 gear
4:10 gears how to

**psiperformance** · 01-10-2007, 04:15 PM

Quote:

Originally Posted by thesource

The 07 I just bought had 3.31's in it . As soon as a programmer is out for the car , I will be installing 3.73's and a girdle in the back .

we have predators in stock for the 07 mustang.

and we can do gears and a girdle however the rear panhard requires a relocation bracket to use most girdles.

Machine · 01-10-2007, 04:35 PM

Quote:

Originally Posted by Tripod

I hear the upgraded stall also makes a huge difference.

for an auto..yes it does

06BlackGT · 01-13-2007, 10:54 AM

Good stuff thanks.

86sleeper · 01-13-2007, 11:19 AM

I have a set of 3.73's I would be willing to let go.

**thesource** · 01-13-2007, 01:18 PM

Quote:

Originally Posted by psiperformance

we have predators in stock for the 07 mustang.

and we can do gears and a girdle however the rear panhard requires a relocation bracket to use most girdles.

Thanks for the offer but I'm a "do yourselfer" I guess you could say .

TheDan · 03-30-2007, 12:23 AM

I have the stock or option 3.55's in my 06. had 3.73s in my 2k and I like the 3.55s better.

D

VictoRR · 04-05-2007, 06:44 PM

I am considering going with 4.10's but with a blower in mind (Kenne Bell) I am not sure i'll even waste the time and money. Going from factory 3.55's to 3.90's, doesn't seem like it'll make a big difference.

Currently I am crossing the traps in the top of 3rd. With 4.10's I would be at or near the top of 4th. A blower would cause me to exhaust my RPM when I cross the traps. perhaps.

Has anyone done a 3.55 - 3.90 swap have anything good to say?

FordGT08 · 04-10-2007, 08:34 PM

4.10s all the way

Speeddmn · 04-12-2007, 02:53 PM

Quote:

Originally Posted by VictoRR

I am considering going with 4.10's but with a blower in mind (Kenne Bell) I am not sure i'll even waste the time and money. Going from factory 3.55's to 3.90's, doesn't seem like it'll make a big difference.

Currently I am crossing the traps in the top of 3rd. With 4.10's I would be at or near the top of 4th. A blower would cause me to exhaust my RPM when I cross the traps. perhaps.

Has anyone done a 3.55 - 3.90 swap have anything good to say?

I'd run 3.90's if FRPP made them. If you want to go with a kenne bell I'd get a set of 3.73 and you should still be crossing the line in 3rd with the correct tire size.

**psiperformance** · 04-16-2007, 02:15 PM

Quote:

Originally Posted by Speeddmn

I'd run 3.90's if FRPP made them. If you want to go with a kenne bell I'd get a set of 3.73 and you should still be crossing the line in 3rd with the correct tire size.

not a chance in hell he will cross in third with a KB and a set of 3.73 the car should easily tap 117 + with a KB blower.

PMP · 05-05-2007, 06:09 PM

PMP gear sevice is second to none. We can help you guys out with questions and service, just shoot us a PM. We also sell some tools for the guy who wants to do this at home.

-PMP

Stang13 · 05-05-2007, 09:16 PM

Quote:

Originally Posted by TheDan

I have the stock or option 3.55's in my 06. had 3.73s in my 2k and I like the 3.55s better.

D

I had 4:10's before the Vortech, went with 3:55's when the Vortech went in and I like them much better! 150 extra RWHP helped of course, but I would still go with 3:55's N/A....great gear and you won't get spanked on the highway.....trust me, you will run out of gear on the highway with 4:10's!!!!

FordGT08 · 05-05-2007, 09:52 PM

thats why you stick to the track...american muscle!!!!

01-08-2007, 10:28 PM	#1
06BlackGT Back In Black Join Date: Jan 2007 Location: So.Cal Posts: 27	Rear Gears Has anyone changed there rear end gears? If so what did you put in I'm looking to do many things to my 06 and wanted some feed back such as gas mileage, performance ect. Last edited by 06BlackGT; 01-08-2007 at 11:11 PM.

01-08-2007, 11:49 PM	#2
keg65 Change always makes Sense (or Cents) Join Date: May 2005 Location: NE San Antonio Posts: 1,303	I want to do the same. I hear that 4.10's really liven it up. Then a magazine says 3.73's will keep you mileage reasonable. I have an automatic trans, so which one? __________________ 1 of 472 Year 2005 Mustang GT, Black, Convertible with Black Top, Automatic Transmission, Dark Charcoal/Red Interior.

01-09-2007, 10:32 AM	#3
Machine aka...BlackJack Join Date: Jun 2003 Location: too damn close to mexico Posts: 1,769	For streetability, 4.10's at the most for auto trannys, 4:30's for manuals. Also keep in mind that adding a power adder will affect that as well. I'm running 3.90's because I have a 3000 stall torque converter and I plan on adding a s/c this year. just my .02 __________________ SCT, JLT, Pullies, Gears, 3000 stall, BMR LCA's, Steeda Superlites, O/R H, Mac Axlebacks and BAMACHIPS tuned!

01-09-2007, 03:40 PM	#5
thesource LSS Sponsor Join Date: Nov 2004 Location: in a hole building transmissions Posts: 3,692	The 07 I just bought had 3.31's in it . As soon as a programmer is out for the car , I will be installing 3.73's and a girdle in the back . __________________ Texas Motorsports Myspace Texas Motorsports Photobucket

01-09-2007, 05:34 PM	#6
Tripod Registered User Join Date: Nov 2006 Location: SATX Posts: 89	I went with 3.73's. Also automatic here.... I almost went 4.10's but I've been reading about some issues with the 4.10's that didn't make too comfy with the idea. I hear the upgraded stall also makes a huge difference. Right now I am seeing a slight decrease in mileage, about 22 mpg is my higway average right now vs the 24 it was at when stock. Thanks to the SLPs the car is also a bit louder on the highway, 75 mph translates to about 2500 rpms, which is hummin' a bit, but not terrible. Besides, the Shaker 1000 takes cars of that with relative ease, hehe.... One thing is for sure, gears do make a difference.....I plan on seeing just how much tomorrow at the track.... __________________ 2006 Mazdaspeed 6 GT 2003 SVT Focus appearance modded-SCT Tuned

01-09-2007, 01:32 PM	#4
cooksey07 white horse Join Date: Jul 2006 Location: dallas Posts: 9	1998 GT. Installed 4:10's. Gas mileage considerably down. Lots of fun and very responsive. Would have gone with 3.73's but alot of techs say 4:10 was best for year/model

01-09-2007, 10:22 PM	#7
keg65 Change always makes Sense (or Cents) Join Date: May 2005 Location: NE San Antonio Posts: 1,303	Jay Tee did a How To 4.10 gear 4:10 gears how to __________________ 1 of 472 Year 2005 Mustang GT, Black, Convertible with Black Top, Automatic Transmission, Dark Charcoal/Red Interior.

01-13-2007, 10:54 AM	#10
06BlackGT Back In Black Join Date: Jan 2007 Location: So.Cal Posts: 27	Good stuff thanks.

01-13-2007, 11:19 AM	#11
86sleeper Registered User Join Date: Dec 2003 Location: deer park Posts: 2,501	I have a set of 3.73's I would be willing to let go. __________________ MIKE '86 GT:high 12's Sold '01 GT:low 11's for sale

03-30-2007, 12:23 AM	#13
TheDan Dont hate the PLAYER; Hate the GAME!! Join Date: Jul 2006 Location: Cocoa Beach, FL Posts: 1,635	I have the stock or option 3.55's in my 06. had 3.73s in my 2k and I like the 3.55s better. D __________________ Signature? I dont need no stinkin signature!

04-05-2007, 06:44 PM	#14
VictoRR Mr. Bobwehadababyitsaboy Join Date: Oct 2004 Location: Austin, TX Posts: 202	I am considering going with 4.10's but with a blower in mind (Kenne Bell) I am not sure i'll even waste the time and money. Going from factory 3.55's to 3.90's, doesn't seem like it'll make a big difference. Currently I am crossing the traps in the top of 3rd. With 4.10's I would be at or near the top of 4th. A blower would cause me to exhaust my RPM when I cross the traps. perhaps. Has anyone done a 3.55 - 3.90 swap have anything good to say? __________________ 2006 GT www.centraltexasstangs.com \|Bassani X\|Flowmaster AB\|Demolet CAI\|SCT-Bama Tune\|CMCV Deletes\|287rwhp/300rwtq (without CMCV's or Xpipe) Mustang Dyno

04-10-2007, 08:34 PM	#15
FordGT08 Registered User Join Date: Jan 2007 Location: San Antonio Posts: 1,453	4.10s all the way

05-05-2007, 06:09 PM	#18
PMP Registered User Join Date: Apr 2007 Location: Austin, Texas Posts: 120	PMP gear sevice is second to none. We can help you guys out with questions and service, just shoot us a PM. We also sell some tools for the guy who wants to do this at home. -PMP

05-05-2007, 09:52 PM	#20
FordGT08 Registered User Join Date: Jan 2007 Location: San Antonio Posts: 1,453	thats why you stick to the track...american muscle!!!!

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