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Ford Performance Ring Gear and Pinion Kit - 3.73 Gears (94-98 GT)

Market Price $179.99 You Save 8% ($15.00)
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$164.99

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  • Item 24001G94
  • MPN# M-4209-88373N

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    Features & Details

    • Ford Racing Quality
    • Strong Forged Construction
    • 3.73 Gear Ratio
    • 8.8" Ring Gear Diameter
    • For Street or Track Use
    • Fits 1994-1998 GT and Cobra Mustangs
    Improve ET's and low end torque. Are you looking to get more low end grunt off the line and lower ET's at the same time? Then look no further than installing a set of steeper gears in your Pony. Ford Racing Ring and Pinion Gears are perfect for street, road, or race use.

    Superior Quality. These Ford Racing 3.73 Mustang ring and pinion gears feature a super strong forged construction, CNC cut & lapped gear teeth, and a black oxide finish to resist corrosion.

    Recommended Upgrade. Changing the rear axle gear ratio will throw off the calibration of your Mustangs speedometer, but a new Speedometer Gear is an inexpensive way to fix this issue.

    Application. This Ford Racing Ring and Pinion Gear set will fit all 1994 to 1998 V8 Mustangs including the GT and Cobra models. A master bearing kit is recommended by most installers, especially on high mileage vehicles, see drop down option above.

    Technical Note. Installation costs will vary, but a good rule of thumb is between $250 and $300. Be sure to work with a reliable shop that you trust for installations. You can also save money on your installation labor by having your Trac-Lok rebuilt at the same time as your gears are installed, see drop down option above.

    Fitment: 1994 1995 1996 1997 1998 Details

    What's in the Box
    • (1) Ring gear
    • (1) Pinion gear
    Installation Info
    Tech Specs

    Approximate RPM for 1994-1995 GT


    Manual
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3876 5427 6977      
    2 2289 3205 4120 5036 5951 6867
    3 1100% 2142 2754 3366 3978 4590
    4 1150 1610 2070 2531 2991 3451
    5 771 1079 1387 1695 2004 2312


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 2761 3865 4969 6073    
    2 1687 2362 3037 3712 4386 5061
    3 1150 1610 2070 2531 2991 3451
    4 767 1074 1380 1687 1994 2301


    Approximate RPM for 1996-1998 GT


    Manual
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3888 5443 6998      
    2 2301 3221 4141 5061 5981 6902
    3 1518 2126 2733 3340 3948 4555
    4 1150 1610 2070 2531 2991 3451
    5 782 1095 1480 1721 2034 2347


    Automatic
    Gear @25 MPH @35 MPH @45 MPH @55 MPH @65 MPH @75 MPH
    1 3267 4573 5880      
    2 1783 2496 3209 3922 4636 5349
    3 1150 1610 2070 2531 2991 3451
    4 805 1127 1449 1771 2093 2416
    Will it fit my Mustang?

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    11 Questions / 19 Answers

    Ask a Question

    Does anyone know if I need a tuner or speedometer gear to fix calibration of speedometer gear. For 96 mustang gt automatic transmission

    JosephM

    • When installing the Ford Performance 3.73 Gears, your speedometer will need to be re calibrated. This can be accomplished by replacing the speedometer gear, or utilizing a Ford Performance Speed cal. A tune would be unable to correct the speedometer for models prior to 1999.

      Rob D

    Helpful (2)

    Anyone know what speedometer gear I need for my 96 mustang gt with automatic transmission. Don't have a 8 tooth drive gear?

    JosephM

    • 1983-1989 Automatic Transmissions require a 7 tooth gear. 990-1998 Automatic Transmissions require a 8 tooth gear.

      AM MikeW

    Helpful (1)

    what speedo gear will I need for my 96 gt with a manual t-45?

    stixx

    • The T45's from 1996-1998 came with a 8 tooth drive gear and would require a speedometer gear with more than 23 teeth. To get the vehicle to calibrate correctly for this Ford Performance Ring Gear and Pinion Kit, you would need a 21 tooth speedometer gear and a 7 tooth drive gear. Ford Speedo Gear - 21 Tooth - item 53682 https://www.americanmuscle.com/speedo-gear-21tooth-manual.html

      AMJEFF

    Show 1 more answer Helpful (0)

    I want to put 3.73 gear on my 96 mustang gt automatic transmission but it say to replace the speedometer gear and I need a 8 tooth gear but American music don't carry this item can someone help me with this issue.

    JosephM

    • There are two options aside from the speedo gears we carry to adjust your speedometer. One being a speedometer recalibration tool, the other being customer tunes. I will link both below: https://www.americanmuscle.com/ford-speedo-tool-9410.html https://www.americanmuscle.com/x4-custom-tuner-9698gt.html However with that being said, I would suggest to go with the custom tuner. Not only will it adjust your speedometer, but being that you have an automatic, it will also readjust your shift points.

      JeffAM

    Helpful (0)

    I'm just curious. I bought these gears and they are currently being installed. Is there a break in period for rear end gears or no? I've heard both and if yes then how long?

    GageR

    • hey Gage, There is a break in period for new gears. You don't want to do really any aggressive driving for about 500 miles. Thats about the time needed for the car to adjust

      Cobra_Machine04

    Helpful (0)

    hi i have a 1996 3.8 v6 mustang will these gears fit it please . also is the ring gear a bolt on or a heat up and sweat on ring please as i cant see well enough in your pictures thankyou

    deanpayton

    • The Ford Performance 3.73 Gears (94-98 GT) will not fit your 96 v6. This will be for the GTs that have a 8.8" rear end. The V6 will have a 7.5" rear end. You will need the Motive Performance Plus 3.73 Gears (94-98 V6) item number 21107G94.

      Ricky36

    Helpful (0)

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    Customer Reviews (72) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$500-$1000

    • Performance Gain 4.678571 4.7
    • Fit 4.75 4.8



    • 3/5

      Installation Time: Weekend

      May 07, 2018

      Buy a different brand

      couldn't get a consistent wear pattern throughout the ring gear. the threads started coming off the pinion from replacing the nut so many times, which is why I settled for the best wear pattern i could get. makes a weird pulsating sound but still runs decently well. Id buy a higher quality gear next time.

      NotStan

      Year: 1998 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      January 23, 2018

      MORE get up and go

      these gears rock! though it COMPLETELY threw off my speedo and for the life of me i cant fix it, these are great

      P0L4R8E4R

      Year: 1998 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      June 17, 2017

      Works great

      I installed this at the same time i built my engine. These gears helped to make my car feel like a stump pulling torque monster!

      Jethro

      Year: 1995 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      June 16, 2017

      Great set up

      So I purchased this gear set up for my 97 GT. I've already done a full 97 Cobra swap to it but knew she needed a little more. The gears have helped a ton. Car is happy with the set up aswell. Likes that top end! The gear choice is worth it for a Daily and when you try and do race car stuff. Good enough I purchased 3.73s for my 02 GT aswell

      Shiiltta

      Year: 1997 Submodel: GT

      Helpful (2)

    • 5/5

      June 15, 2017

      New gears

      The gears added a lot more pick up between 1st-3rd gear. 5th gear definitely has a better pull. Well worth it

      Chaddyboii

      Year: 1998 Submodel: GT

      Helpful (2)

    • 4/5

      June 08, 2017

      Great gears if installed right lol

      Thes gears gave my almost stock 95 mustang auto 5.0 a more of a jump then the stock gears catches up allot faster. I know allot of people recommend 410s for autos but this is what i would recommend if you plan on changing over to a stick one day. Only bad thing was i should of got someone better then i did to install them because now i have a wine.

      95StangNC

      Year: 1995 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      March 20, 2017

      Good product

      Already have 3.73 gears in my 2002 mustang gt I bought these as a gift for my dad's birthday for his 1995 gt and he loves them.. AM is always my first choice when I'm dealing with the weekend beast. BTW if you get any gears other than stock I recommend you get aluminum drive train because with the stock drive train you will have a lot of vibration with the 3.73 gears.

      Preston

      Year: 2002 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      February 16, 2017

      Perfect

      American Muscle shipped it very quick. Great product. Install isnt to bad, did it in a few hours. Will need a new cover gasket and can reuses old shims if in good shape. Remember which one came from where and how. I also replaced all bearings at the same time.

      BenjaminR

      Year: 1997 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      October 18, 2016

      So far so good!,

      Happy with it so far, Fast shipping, good product

      Mbgarage

      Year: 1995 Submodel: GT

      Helpful (2)

    • 5/5

      July 06, 2016

      Great product

      Always good quality from Ford racing, had professionally installed for 300$ , parts self supplied.

      Speedyg

      Year: 1998 Submodel: GT

      Helpful (2)

    • 5/5

      June 16, 2016

      Great Gear

      I purchased the 373 gear for my 95 mustang. I wanted a good all around gear that wouldn't sacrifice power. Absolutely NO power lost, but there was a noticeable torque and throttle response gain. Quick and Quiet...No gear noise. A must have when upgrading you Stang.

      BlownNGone

      Year: 1995 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      March 26, 2016

      AWESOME GEAR

      This ford racing gear is by far the greatest mod completed the break in and wow my pony pulls hard just word of advice don't use aftermarket oil go to the dealer and get the Ford synthetic 75/140 three quarts and differential additive especially in the break in process not a job you want to do twice!

      Punisher98

      Year: 1998 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      August 19, 2015

      Great option for daily driver

      Bought my 98 GT used with 38k miles on it. It came with 2.73 and a Trac-Loc. I wanted a gear that gave great performance, but didn't want to lose streetability. Replaced my 2.73 with the Ford Racing 3.73 and it was a great choice. My RPM's at 70 MPH with 2.73's were at 1700. With 3.73, 70 MPH was around 2300 or 2400 RPM. I'm very happy with this gear and glad I didn't do 4.10's. Will 4.10's accelerate better? Yes. But at 70 MPH you's be up around 2700 RPM. First gear with the 3.73 is pretty low as it is. I wouldn't want anything more than that.

      Denis

      Year: 1998 Submodel: GT Merrimack, NH

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $1000+

      August 05, 2015

      3.73 combined with Ford Racing Limited Slip Diff

      Ever since I got my Mustang in 2010, I have had a whooshing sound from the differential. Then a few years ago, a moan/squeal when I turned left at speeds under 40 MPH, replaced some suspension before my uncle figured it out that the limited slip in there was failing. Went ahead and ordered these gears and the Ford Racing Limited Slip-31 spline with the Ford Racing install kit and the bearings for the axles. Also got rear axles because I was unsure what was installed, turned out it was stock axles of 28 spline instead of 31 spline diff I was installing and most likely stock ring and pinion (3.27) with limited slip. Trouble was, I have the ABS option, had to order Moser axles so it was in the shop a little longer than expected. In the end, Holy Cow! What a difference 3.73 gears made, I was shocked and still am shocked at how much power I gained. I feel like the car gained horsepower really. Huge difference that I was not expecting because I thought the gear would have modified already, guess I was wrong. Well worth it and it runs quiet now! That was best of all and no more squeal/moan when I turn left, I now hear the engine more and exhaust, just what I like to hear, along with the Mach 460 Sound System. Cost of install higher because I replaced everything back there except the housing.

      MustangGT98

      Year: 1998 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      July 09, 2014

      Gear Installation

      I don't think I would recommend the install kit for what it costs. I ended up still buying new pinion bearings, seals and the sorts at a local parts store. The gears went in nicely though. If you have any mechanical aptitude, the install is pretty easy. It took me about 3 hours. Setting the crush sleeve is the hardest part of the whole job. I will say though, that the gears were a welcome change to the way the car runs now. I was worried the 3.73 would be to low, but highway rpms in 5th gear are 2600 at 75 (this is with the corrected speedo). I am really pleased with the turn out and the shipping was quick was which was even better. I would recommend these to anyone with a 5 speed manual.

      lightweightstickers

      Year: 1997 Submodel: GT Grand Junction, CO, USA

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $1000+

      May 01, 2014

      Can feel the difference in pull....

      But I don't think my OEM clutch can handle it, seems to slip when I try and take off, make sure you have a better clutch..my install was 1069, but that's because I had axle shafts that needed replacing also, without that, would have been 5-600, I think I could have done 4.10s though, at 65mph I'm at 2200rpm, would recommend for sure

      yezmar

      Year: 1997 Submodel: GT San Francisco Bay Area, CA, USA

      Helpful (2)

    • 5/5

      Installation Time: Full Day

      April 20, 2014

      98 cobra

      I decided with these 373s after talking to some local performace shops,i was thinking about 410s but glad I went with these,you get better gas milage,plus your not racing the engine all the time,an to top things off,i can go on a trip.notice a big difference in 2nd & 3rd gear pulls are much stronger!

      allen

      Year: 1998 Submodel: Cobra boise

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      January 27, 2013

      Great Gear!

      Great gear! really brings out the low end. definitely pulls alot harder through 3rd.

      acknfoolish

      Year: 1997 Submodel: GT

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      May 09, 2012

      dont fear the gear

      Unbelievable difference in acceleration! When I get on it I can't even finish 1st without tires spinning and I always churp in second. Definitely feel the g-force.

      Staak105

      Year: 1995 Submodel: Cobra Stratford, CT

      Helpful (6)

    • 4/5

      Installation Time: Shop Install

      April 01, 2012

      awesome

      my five speed moves out the hole fast now. it helped realy good on my coming out the door and didnt hurt my top end. a must have also.

      YaYa

      Year: 1996 Submodel: GT Dyersburg, TN, USA

      Helpful (2)

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