How can I tell if i have 4.10 gears?

AirMan89 · November 14th, 2011, 10:23 AM

Bought this mustang a while back its an 03 mustang gt.. its lowered and has an after market clutch and some other mods.. Im just wondering if maybe the gears in it are 4.10... anyway I would be able to tell?

supermachone · November 14th, 2011, 10:30 AM

60 mph should be right at 2,000 RPM in 5th, at least thats how it is on mine, 70 would be closer to 2500

give me a second and ill try to find the gear/mph chart on the site

SNmustang95 · November 14th, 2011, 10:31 AM

Or, they could have written it on the differential. Thats what they did with mine.

supermachone · November 14th, 2011, 10:33 AM

go here and compare

3.27 vs 3.73 vs 4.10 (Took A Couple Hrs 2 Complete... Enjoy)

4.6DreameR · November 14th, 2011, 10:41 AM

Your 5th gear ratio should be .62 because it is 03+
Remember that when calculating anything

95mustangGT/SVT · November 14th, 2011, 10:46 AM

Easy check. Jack up the axle then spin the driveshaft by hand. If it takes 3.5 revolutions of the d-shaft for one complete revolution of the tire you have 3.55. If it takes 3.73 turns then you have 3.73's. Finally if you turn the driveshaft a little over 4 times to make the tire spin once then you have 4.10's

BLUE91GT · November 14th, 2011, 10:47 AM

Jack the car up on jack stands, mark the driveshaft with chalk or a marker. Put car in N and slowly spin the tire 1 full turn while counting how many times the mark on the driveshaft goes around. 4+ a little more is 4.10 gears.

Eagle2000GT · November 14th, 2011, 12:45 PM

^^This is the only way to be sure. There are too many other variables that affect the speed/rpm comparison. One of which is making sure your speedometer and tach read correctly.

Orange2V · November 14th, 2011, 01:00 PM

PaladinMicro

This tool comes in handy!

November 14th, 2011, 10:23 AM	#1
AirMan89 Regular 2003 Mustang GT Convertib Join Date: Aug 2011 Posts: 310 iTrader: 0 reviews	How can I tell if i have 4.10 gears? Bought this mustang a while back its an 03 mustang gt.. its lowered and has an after market clutch and some other mods.. Im just wondering if maybe the gears in it are 4.10... anyway I would be able to tell?

November 14th, 2011, 10:30 AM	#2
supermachone Shake N' Bake 1984 Corvette Kessel Run @ Less Than 12 Parsecs Join Date: Sep 2007 Location: Kansas Posts: 5,076 iTrader: 2 reviews	60 mph should be right at 2,000 RPM in 5th, at least thats how it is on mine, 70 would be closer to 2500 give me a second and ill try to find the gear/mph chart on the site __________________ BONER CREW EMPLOYEE - PACKAGE INSPECTOR #1

November 14th, 2011, 10:33 AM	#4
supermachone Shake N' Bake 1984 Corvette Kessel Run @ Less Than 12 Parsecs Join Date: Sep 2007 Location: Kansas Posts: 5,076 iTrader: 2 reviews	go here and compare 3.27 vs 3.73 vs 4.10 (Took A Couple Hrs 2 Complete... Enjoy) __________________ BONER CREW EMPLOYEE - PACKAGE INSPECTOR #1

November 14th, 2011, 10:47 AM	#7
BLUE91GT Enthusiast 2002 Mustang GT Join Date: Sep 2008 Location: SONOMA COUNTY Posts: 508 iTrader: 1 reviews	Jack the car up on jack stands, mark the driveshaft with chalk or a marker. Put car in N and slowly spin the tire 1 full turn while counting how many times the mark on the driveshaft goes around. 4+ a little more is 4.10 gears. __________________ 02 GT- TF TB/ upper, flows, steeda triax, steeda UDP, BBK CAI, H&R SS springs, Steeda SFC, Poly bushings, AGX shocks/struts, MM CC plates, Steeda bump steer, Chrome Cobra R's, Rear control arm kit.

November 14th, 2011, 12:45 PM	#8
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	^^This is the only way to be sure. There are too many other variables that affect the speed/rpm comparison. One of which is making sure your speedometer and tach read correctly. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

November 14th, 2011, 10:46 AM	#6
95mustangGT/SVT Enthusiast 2001 Gt Join Date: Aug 2010 Location: PA Posts: 915 iTrader: 0 reviews	Easy check. Jack up the axle then spin the driveshaft by hand. If it takes 3.5 revolutions of the d-shaft for one complete revolution of the tire you have 3.55. If it takes 3.73 turns then you have 3.73's. Finally if you turn the driveshaft a little over 4 times to make the tire spin once then you have 4.10's

November 14th, 2011, 01:00 PM	#9
Orange2V Regular 04 GT Join Date: Oct 2011 Location: SOMD Posts: 279 iTrader: 0 reviews	PaladinMicro This tool comes in handy! __________________ Orange2V Build Thread

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