3.73's or 4.10s?

BigO'Deal · January 10th, 2012, 02:17 PM

i have an automatic and its my weekend cruiser in the summer. occaisonaly i drive it eveyday depends. i want the best gear to get up quick and high end power isnt really a factor. so whats the best gear ratio for a semi stock AOD weekend cruiser? i was thinkng 4.10s but some people are saying i will be buying new tires every 4 months but i have Nitto NT555's arent those good street radials? also they say my MPG will drop drasticaly and it will turn into a fridy night special instead of a weekend cruiser. any help will be appreciated! thanks.
oh... and im thinking about buying a hurst automatic inline shifter so i can rip through the gears so will traction be a variable?

black02 · January 10th, 2012, 02:20 PM

I have 3.73s didn't loose much mpg and I daily drive it

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StangBanger302 · January 10th, 2012, 02:32 PM

People are stupid for saying you'll buy new tires every 4 months. Just because you have different gears doesn't mean you floor it all the time. Go for the 4:10s. I wouldn't get anything less in an automatic.

ALEXLOPEZ62188 · January 10th, 2012, 05:45 PM

4.10.

Lethal LX · January 10th, 2012, 10:11 PM

In an auto? 4.10 for sure. If it's going to see more race action 4.30's!

1LOUDGT · January 11th, 2012, 06:01 AM

4.10 rear end gear kit. Find a reputable installer. You won’t be able to wipe the smile off your face. Keep in mind if you’re thinking about a five lug conversion this is the time to do it.

fast5.0lx · January 11th, 2012, 06:38 AM

I have a 5 speed and I use 4.10's and I love it. So I can't imagine 4.10's in an auto being to much. I think that if you go 3.73's your going to regret it and wish you went the other route.

crowbar73 · January 11th, 2012, 08:18 AM

I have 4.10's in mine with an aod and i love it. It's not bad running around town. I wanna say it turns about 2500 rpm at 70 mph roughly. Just make sure whoever puts them in sets them up right. The ones in my car now are very noisy so i'm getting ready to have a new set put in and done right.

thisguysride · January 11th, 2012, 12:11 PM

Originally Posted by crowbar73

I have 4.10's in mine with an aod and i love it. It's not bad running around town. I wanna say it turns about 2500 rpm at 70 mph roughly. Just make sure whoever puts them in sets them up right. The ones in my car now are very noisy so i'm getting ready to have a new set put in and done right.

i opologize for thread jacking but this may be usefull to both of us, some one told me that if i change the rear end and done put a tune on the car i will find that the car shifts funny, i dont see how this would be, but since you guys have already changed em out did you have any problems

slow90 · January 11th, 2012, 12:32 PM

4.10 2800 stall kit XD

black02 · January 11th, 2012, 03:47 PM

The speedo won't read right if you don't use a tune mine is 10 fast might be why

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1LOUDGT · January 12th, 2012, 06:08 AM

You’ll need to swap the speedo gear as well to read proper MPH.

SSG Pate · January 13th, 2012, 10:22 PM

410 gears you will not be disapointed.

January 10th, 2012, 02:17 PM	#1
BigO'Deal Newbie 1990 Mustang LX Never ran it Join Date: Dec 2011 Location: South Bend, Indiana Posts: 28 iTrader: 0 reviews	3.73's or 4.10s? i have an automatic and its my weekend cruiser in the summer. occaisonaly i drive it eveyday depends. i want the best gear to get up quick and high end power isnt really a factor. so whats the best gear ratio for a semi stock AOD weekend cruiser? i was thinkng 4.10s but some people are saying i will be buying new tires every 4 months but i have Nitto NT555's arent those good street radials? also they say my MPG will drop drasticaly and it will turn into a fridy night special instead of a weekend cruiser. any help will be appreciated! thanks. oh... and im thinking about buying a hurst automatic inline shifter so i can rip through the gears so will traction be a variable?

January 10th, 2012, 02:32 PM	#3
StangBanger302 Hardcore Enthusiast 1992 Mustang LX 13.0 @ 105 Join Date: Jun 2010 Location: New York Posts: 2,230 iTrader: 0 reviews	People are stupid for saying you'll buy new tires every 4 months. Just because you have different gears doesn't mean you floor it all the time. Go for the 4:10s. I wouldn't get anything less in an automatic. __________________ As I lay rubber down the street I pray for traction I can keep But if I spin, and begin to slide Please dear God, protect my ride

January 10th, 2012, 05:45 PM	#4
ALEXLOPEZ62188 Mustang Fanatic 1989 Mustang LX Join Date: Feb 2011 Location: Apple Valley, CA Posts: 409 iTrader: 0 reviews	4.10. __________________ 89 Mustang LX: 347 AFR Comp Cam TFS Track Heat 359rwhp 395rwtq

January 11th, 2012, 06:01 AM	#6
1LOUDGT Enthusiast 2006 GT 11.99@114 Join Date: Sep 2006 Location: Orlando, FL. Posts: 802 iTrader: 0 reviews	4.10 rear end gear kit. Find a reputable installer. You won’t be able to wipe the smile off your face. Keep in mind if you’re thinking about a five lug conversion this is the time to do it. __________________ 2006 GT (Fastest) 2004 COBRA (Faster) 1990 LX 5.0 (Fast)

January 11th, 2012, 06:38 AM	#7
fast5.0lx Regular 1988 Mustang GT 31.35@55 Join Date: May 2006 Location: Lovington NM Posts: 120 iTrader: 0 reviews	I have a 5 speed and I use 4.10's and I love it. So I can't imagine 4.10's in an auto being to much. I think that if you go 3.73's your going to regret it and wish you went the other route. __________________ 88 gt 5spd. twisted wedge 170's, tfs stage1 cam, fms 1.72rr, edey rpm air gap intake, holley 650 ultra dp, full msd ignition, BBK full length headers, off-road x-pipe, mac pro-dump exhaust, 4.10 gears, pro 5.0 short shifter

January 10th, 2012, 02:20 PM	#2
black02 Enthusiast 02 Mustang GT convt 27.12 @55 Join Date: Jul 2011 Location: Newburgh Ny/Hartford Ct Posts: 687 iTrader: 3 reviews	I have 3.73s didn't loose much mpg and I daily drive it Sent from my Autoguide iPhone app

January 10th, 2012, 10:11 PM	#5
Lethal LX Newbie Join Date: Jan 2012 Posts: 12 iTrader: 0 reviews	In an auto? 4.10 for sure. If it's going to see more race action 4.30's!

January 11th, 2012, 08:18 AM	#8
crowbar73 Regular 1989 Mustang GT Join Date: Jul 2007 Location: Waynesboro, VA Posts: 132 iTrader: 0 reviews	I have 4.10's in mine with an aod and i love it. It's not bad running around town. I wanna say it turns about 2500 rpm at 70 mph roughly. Just make sure whoever puts them in sets them up right. The ones in my car now are very noisy so i'm getting ready to have a new set put in and done right. __________________ He is no fool who gives what he cannot keep to gain what he cannot lose." Jim Elliot Garage: http://www.moddedmustangs.com/forums...-member-10915/

January 11th, 2012, 12:32 PM	#10
slow90 Newbie 1990 mustang gt Join Date: Dec 2011 Location: south side indy Posts: 33 iTrader: 0 reviews	4.10 2800 stall kit XD __________________ JUST 8 HAMPSTERS RUNNIN ON WHEELS.

January 11th, 2012, 03:47 PM	#11
black02 Enthusiast 02 Mustang GT convt 27.12 @55 Join Date: Jul 2011 Location: Newburgh Ny/Hartford Ct Posts: 687 iTrader: 3 reviews	The speedo won't read right if you don't use a tune mine is 10 fast might be why Sent from my Autoguide iPhone app

January 12th, 2012, 06:08 AM	#12
1LOUDGT Enthusiast 2006 GT 11.99@114 Join Date: Sep 2006 Location: Orlando, FL. Posts: 802 iTrader: 0 reviews	You’ll need to swap the speedo gear as well to read proper MPH. __________________ 2006 GT (Fastest) 2004 COBRA (Faster) 1990 LX 5.0 (Fast)

January 13th, 2012, 10:22 PM	#13
SSG Pate Premium Member 00 Mustang GT Vert/88 5.0 Join Date: Sep 2010 Location: Tennessee Posts: 1,766 iTrader: 3 reviews	410 gears you will not be disapointed. __________________ Proud Iraq and Afghanistan War veteran Powered By MMR 4.75L Stroker, Tuned at Kurgan Motorsports

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