3.27 vs 3.73 vs 4.10 (took a couple hrs 2 complete... enjoy)

TheBusher · August 4th, 2007, 09:46 PM

--------------------------------------------------------------------------------
So I've got two things wrokin' against me here...
1. I'm a big nerd and I love seeing the numbers (results)
2. I am bored as hell at work and can't do shit about it

I have compiled a list comparing 3.27 vs 3.73 vs 4.10 gears and showing what your speed is at various RPM's. Not sure if anyone is really gonna care about the info I have provided but I thought a few people might want to compare this info and it might help them decide on what gears to go with (maybe?). Cuz like I said I like seeing things in numbers. The following information is for a stock 2004 GT with stock size rims and tires (245/45/17) and the TR-3650 tranny.

------------------------------------3.27's--------------3.73's------------4.10's
--------------------------{1st-----41.49---------------36.37------------33.09
--------------------------{2nd----70.12---------------61.47------------55.92
(MPH @ 6,000 rpm)--{3rd----106.24--------------93.14------------84.73
--------------------------{4th-----140.24--------------122.94----------111.85
--------------------------{5th-----226.19--------------198.29----------180.40

------------------------------------3.27's--------------3.73's------------4.10's
--------------------------{1st-----39.76---------------34.86------------31.71
--------------------------{2nd----67.20---------------58.91------------53.59
MPH @ redline--------{3rd----101.81--------------89.26------------81.20
(5,750 rpm)-----------{4th-----134.39--------------117.82----------107.19
--------------------------{5th-----216.76--------------190.03----------172.88

------------------------------------3.27's--------------3.73's------------4.10's
--------------------------{1st-----36.30---------------31.83------------28.95
--------------------------{2nd----61.35---------------53.79------------48.93
MPH @ peak HP------{3rd-----92.96---------------81.50------------74.14
(5,250 rpm)-----------{4th-----122.71--------------107.57-----------97.87
--------------------------{5th-----197.91--------------173.51-----------157.85

------------------------------------3.27's--------------3.73's------------4.10's
--------------------------{1st-----27.66---------------24.25------------22.06
--------------------------{2nd----46.75---------------40.98------------37.28
MPH @ peak torque--{3rd-----70.83--------------62.09------------56.49
(4,000 rpm)-----------{4th-----93.49---------------81.96------------74.56
--------------------------{5th-----150.79-------------132.20-----------120.27

------------------------------------3.27's-------------3.73's-------------4.10's
rpm @ 80 MPH in 5th gear---{2,122-------------2,421--------------2,661
rpm @ 60 MPH in 5th gear---{1,591-------------1,815--------------1,996
rpm @ 40 MPH in 5th gear---{1,061-------------1,210--------------1,331
rpm @ 40 MPH in 4th gear---{1,711-------------1,952--------------2,146

Ok, now that I'm finished you can go ahead and ridicule me for being a nerd and having way too much time on my hands. For those of you who choose not to do so, I hope you enjoy the information that I have provided.

TheUNZippee! · August 4th, 2007, 09:50 PM

Although I'm an S197 guy, TB, excellent writeup. Well done.

flapster · August 9th, 2007, 01:01 PM

Great post, but you aren't done! The Cobra and Mach 1 came with 3.55 gears...the Mach used the 3650 and the Cobra had a 6 speed. Where are those numbers? Come on, you have a couple more hours!

TheBusher · August 9th, 2007, 05:59 PM

Originally Posted by flapster

Great post, but you aren't done! The Cobra and Mach 1 came with 3.55 gears...the Mach used the 3650 and the Cobra had a 6 speed. Where are those numbers? Come on, you have a couple more hours!

Yeah *sigh*... I'm workin' on it...

tlr96 · August 9th, 2007, 11:13 PM

hey nice right up man! but where the numbers for 96-98 stangs with the t-45? you have more time to kill right?

TheBusher · August 10th, 2007, 12:21 AM

Originally Posted by tlr96

hey nice right up man! but where the numbers for 96-98 stangs with the t-45? you have more time to kill right?

I've actually finished this one I just need to post it up.

Invictus · August 10th, 2007, 03:25 AM

sticky!

tlr96 · August 10th, 2007, 08:43 AM

Originally Posted by TheBusher

Originally Posted by tlr96

hey nice right up man! but where the numbers for 96-98 stangs with the t-45? you have more time to kill right?

I've actually finished this one I just need to post it up.

cool, lookin forward to seeing it!

FOR POINT SIX · August 11th, 2007, 06:13 AM

Great writeup!!!!

+1

brianstang · August 13th, 2007, 01:05 AM

what would all that be for an automatic

TheBusher · August 13th, 2007, 11:11 AM

Originally Posted by brianstang

what would all that be for an automatic

You know I would love to do automatics too, but I can't seem to find the gear ratios for the autos. If someone can give me this info I would gladly make a write up for autos.

prodrifterx · January 24th, 2008, 09:32 PM

these are gear ratios for a 1999 mustang Transmission
Gear Ratios 5-Speed Manual 4-Speed Automatic
1st Gear=============3.35=========2.84
2nd Gear=============1.99=========1.56
3rd Gear=============1.33=========1.00
4th Gear=============1.00=========0.70
5th Gear=============0.68
Reverse Gear=========3.15=========2.32
Axle Ratio===========3.27:1=======3.27:1

would some one do the same calculations (3.27, 3.55, 3.73, 4.10) for these two transmissions?

neverfastenough1 · January 24th, 2008, 10:19 PM

Originally Posted by prodrifterx

these are gear ratios for a 1999 mustang Transmission
Gear Ratios 5-Speed Manual 4-Speed Automatic
1st Gear=============3.35=========2.84
2nd Gear=============1.99=========1.56
3rd Gear=============1.33=========1.00
4th Gear=============1.00=========0.70
5th Gear=============0.68
Reverse Gear=========3.15=========2.32
Axle Ratio===========3.27:1=======3.27:1

would some one do the same calculations (3.27, 3.55, 3.73, 4.10) for these two transmissions?

Here you lazy bum. Jk, I ain't figuring that stuff out! Here is a link to the calculators. Just remember, when you put the gear in you have to multiply the tranny gear ratio by the rear ratio. For instance, first ger on the manual tranny with a 4.10 rear, you would put 13.375 in the gear ratio spot. In 4th on the manual you would just use 4.10.

Tires, Gears, MPH and RPM Relationship Between

TurboLX · January 24th, 2008, 10:27 PM

Kudos!

prodrifterx · January 24th, 2008, 10:38 PM

that works too.... thank you.
+1

neverfastenough1 · January 24th, 2008, 11:14 PM

Anytime.

TheBusher · January 25th, 2008, 07:16 AM

Originally Posted by Invictus

sticky!

'bout time

HurricaneJesus · January 25th, 2008, 11:09 AM

OK so according to this my car already has 3.73's....guess the previous owner did it but never documented it. I was planning on getting 4.10s but you think I should skip it and do cams now or what?

neverfastenough1 · January 26th, 2008, 03:35 PM

Originally Posted by HurricaneJesus

OK so according to this my car already has 3.73's....guess the previous owner did it but never documented it. I was planning on getting 4.10s but you think I should skip it and do cams now or what?

You won't see a significant gain with one gear size. Not enough that I personally would spend the money or take the time to go from 3.73 to 4.10. Don't know what your car has already, but maybe you should start your own thread to try to get some more answers.

prodrifterx · January 26th, 2008, 03:58 PM

Originally Posted by HurricaneJesus

OK so according to this my car already has 3.73's....guess the previous owner did it but never documented it. I was planning on getting 4.10s but you think I should skip it and do cams now or what?

and what i posted was transmission and rear end stock info for a 1999 mustang. which uses t5/t45 trans and 4r70 (idk if thats the right call# and such) auto trans.

August 4th, 2007, 09:46 PM	#1
TheBusher Hardcore Enthusiast 2002 Chevrolet Impala ??? Join Date: Jul 2007 Location: Fort Collins, Colorado Posts: 2,242 iTrader: 0 reviews	3.27 vs 3.73 vs 4.10 (took a couple hrs 2 complete... enjoy) -------------------------------------------------------------------------------- So I've got two things wrokin' against me here... 1. I'm a big nerd and I love seeing the numbers (results) 2. I am bored as hell at work and can't do shit about it I have compiled a list comparing 3.27 vs 3.73 vs 4.10 gears and showing what your speed is at various RPM's. Not sure if anyone is really gonna care about the info I have provided but I thought a few people might want to compare this info and it might help them decide on what gears to go with (maybe?). Cuz like I said I like seeing things in numbers. The following information is for a stock 2004 GT with stock size rims and tires (245/45/17) and the TR-3650 tranny. ------------------------------------3.27's--------------3.73's------------4.10's --------------------------{1st-----41.49---------------36.37------------33.09 --------------------------{2nd----70.12---------------61.47------------55.92 (MPH @ 6,000 rpm)--{3rd----106.24--------------93.14------------84.73 --------------------------{4th-----140.24--------------122.94----------111.85 --------------------------{5th-----226.19--------------198.29----------180.40 ------------------------------------3.27's--------------3.73's------------4.10's --------------------------{1st-----39.76---------------34.86------------31.71 --------------------------{2nd----67.20---------------58.91------------53.59 MPH @ redline--------{3rd----101.81--------------89.26------------81.20 (5,750 rpm)-----------{4th-----134.39--------------117.82----------107.19 --------------------------{5th-----216.76--------------190.03----------172.88 ------------------------------------3.27's--------------3.73's------------4.10's --------------------------{1st-----36.30---------------31.83------------28.95 --------------------------{2nd----61.35---------------53.79------------48.93 MPH @ peak HP------{3rd-----92.96---------------81.50------------74.14 (5,250 rpm)-----------{4th-----122.71--------------107.57-----------97.87 --------------------------{5th-----197.91--------------173.51-----------157.85 ------------------------------------3.27's--------------3.73's------------4.10's --------------------------{1st-----27.66---------------24.25------------22.06 --------------------------{2nd----46.75---------------40.98------------37.28 MPH @ peak torque--{3rd-----70.83--------------62.09------------56.49 (4,000 rpm)-----------{4th-----93.49---------------81.96------------74.56 --------------------------{5th-----150.79-------------132.20-----------120.27 ------------------------------------3.27's-------------3.73's-------------4.10's rpm @ 80 MPH in 5th gear---{2,122-------------2,421--------------2,661 rpm @ 60 MPH in 5th gear---{1,591-------------1,815--------------1,996 rpm @ 40 MPH in 5th gear---{1,061-------------1,210--------------1,331 rpm @ 40 MPH in 4th gear---{1,711-------------1,952--------------2,146 Ok, now that I'm finished you can go ahead and ridicule me for being a nerd and having way too much time on my hands. For those of you who choose not to do so, I hope you enjoy the information that I have provided.

August 4th, 2007, 09:50 PM	#2
TheUNZippee! Moderator Join Date: Jan 2007 Location: Canada Posts: 61,816 Blog Entries: 1 iTrader: 0 reviews	Although I'm an S197 guy, TB, excellent writeup. Well done. __________________

August 9th, 2007, 11:13 PM	#5
tlr96 Hardcore Enthusiast 1996 Mustang GT Join Date: Mar 2007 Location: Effingham, IL Posts: 1,796 iTrader: 0 reviews	hey nice right up man! but where the numbers for 96-98 stangs with the t-45? you have more time to kill right? __________________ view my garage for pics and modifications listen to my exhaust video 1 video 2 video 3

August 11th, 2007, 06:13 AM	#9
FOR POINT SIX Enthusiast Join Date: Aug 2006 Location: Nashville TN Posts: 679 iTrader: 0 reviews	Great writeup!!!! +1 __________________ http://www.myspace.com/forpointsix My Garage

January 24th, 2008, 10:27 PM	#14
TurboLX I Post Entirely Way Too Much 1988 Mustang LX Turbo Join Date: Oct 2006 Location: NY Posts: 8,792 Blog Entries: 1 iTrader: 0 reviews	Kudos! __________________ 1988 LX Coupe 2.5L, GT35R, 44mm WG, 32psi, C16.

August 9th, 2007, 01:01 PM	#3
flapster Look Ma! My First Post! Join Date: Aug 2007 Posts: 1 iTrader: 0 reviews	Great post, but you aren't done! The Cobra and Mach 1 came with 3.55 gears...the Mach used the 3650 and the Cobra had a 6 speed. Where are those numbers? Come on, you have a couple more hours!

August 10th, 2007, 03:25 AM	#7
Invictus Hardcore Enthusiast 1999 Mustang Join Date: Jul 2006 Posts: 1,355 iTrader: 0 reviews	sticky!

August 13th, 2007, 01:05 AM	#10
brianstang Regular 1998 mustang gt 1/8= 9.3@ 78 Join Date: Jul 2007 Location: centerville, ia Posts: 158 iTrader: 0 reviews	what would all that be for an automatic

January 24th, 2008, 09:32 PM	#12
prodrifterx Enthusiast Join Date: Sep 2007 Location: Pasadena, MD Posts: 748 iTrader: 0 reviews	these are gear ratios for a 1999 mustang Transmission Gear Ratios 5-Speed Manual 4-Speed Automatic 1st Gear=============3.35=========2.84 2nd Gear=============1.99=========1.56 3rd Gear=============1.33=========1.00 4th Gear=============1.00=========0.70 5th Gear=============0.68 Reverse Gear=========3.15=========2.32 Axle Ratio===========3.27:1=======3.27:1 would some one do the same calculations (3.27, 3.55, 3.73, 4.10) for these two transmissions?

January 24th, 2008, 10:38 PM	#15
prodrifterx Enthusiast Join Date: Sep 2007 Location: Pasadena, MD Posts: 748 iTrader: 0 reviews	that works too.... thank you. +1

January 24th, 2008, 11:14 PM	#16
neverfastenough1 Hardcore Enthusiast 2002 Mustang GT Join Date: May 2007 Location: Savannah, Ga Posts: 2,777 iTrader: 3 reviews	Anytime. __________________

January 25th, 2008, 11:09 AM	#18
HurricaneJesus Regular 2002 Mustang GT 13.9 @ 100.77 Join Date: Jan 2008 Location: Springfield Posts: 84 iTrader: 0 reviews	OK so according to this my car already has 3.73's....guess the previous owner did it but never documented it. I was planning on getting 4.10s but you think I should skip it and do cams now or what? __________________ Some jams to jam out to. www.myspace.com/swampcastle

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