Ford Racing 3.73 Gears and Bama Tuner (05-09 GT)

Ford Racing 3.73 Gears and Bama Tuner (05-09 GT)
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OUR PRICE$549.99(kit)
Market Price $685.99You Save 20% ($136.00)
Item # 99152
Ships in 2-3 business days

Accessories Options

Free Tunes For Life

Accessories Options

Add Custom Tunes

Accessories Options

Add Traction-LOK Rebuild Kit w/ Carbon Discs
PRICE WITH OPTIONS $549.99

Product Features

  • Money Saving Combo Kit
  • SCT SF3 Power Flash Tuner with 3 Custom Bama Tunes
  • Free Tunes For Life
  • Ford Racing 3.73 Gears - 8.8"
  • Motive Gears 8.8" Rear End Installation and Bearing Kit
  • 3 quarts Royal Purple Max Gear 75w140 Gear Oil
  • Free Personalized ID Plaque (pictured above)
  • Fits 2005-2009 V8 Mustangs
More Power for Less Money. Do you want the ultimate power package for your Mustang? Well look no further, because it has arrived. American Muscle introduces the kit that will launch you into quarter mile times that you have never dreamed of possible; designed to give the best possible performance upgrade for your car, without having to empty your wallet. Kit includes: (click on each item for full product description) Ford Racing 3.73 Gears: Great for street, road, or race use; this 3.73 8.8" Ford Racing ring and pinion gear set is stronger than the stock OEM unit! Motive Gears 8.8" Rear End Installation and Bearing Kit: The perfect installation kit for rebuilding or modding yor Mustangs 8.8" rear end. 3 quarts of Royal Purple 75w140 Synthetic Gear Oil: Max-Gear® is an ultra-tough, high performance, GL-5 automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power output throughout the drive train SCT SF3 Power Flash Tuner: Proven SCT Technology + Free Custom Bama Tunes = all the difference in the world. Increased HP and torque. From the factory, the manufacturer programs their vehicles to cater to the needs of the daily driver, not the performance enthusiast. After loading the custom Bama Tune on a vehicle, even a bone stock, unmodified Mustang will realize noticeable gains in HP, Torque, and Fuel Economy. Increase your mod's potential. Factory computer settings are calibrated for the original factory components. When making performance modifications, you need to recalibrate the vehicle's computer to realize the full potential that these modifications can achieve. Free tunes for life! Every customer that purchases a tuner is enrolled in the "Free tunes for life" program. Any time that you make additional mods to your vehicle, our team of SCT certified Bama Custom Tuners will create new tunes for you. Custom Bama Tunes specific to your vehicle. When you order a tuner, you aren't just getting a tuner - you are getting the tuner and 3 dyno-tested custom Bama tunes: Street (87-93 octane) - the street tune is designed as a daily driver program that focuses in on increasing mid-range power. It does give up a few HP at higher RPMs, but that's why there is a Performance file. Automatic vehicles are further enhanced by making adjustments to the transmission's shift points and firmness. Performance (87-93 octane) - The Performance program is designed to add power at 3000 RPMs and higher, focusing more on the top end horsepower and all out performance driving. Timing, fuel and throttle response settings are slightly more aggressive than the street tune. This is a great track tune but also works well for daily drivers that are looking for a little more "get up and go" than the street tune. The automatic transmission settings are the same as in the street tune. Race (91 - 93 octane) - The race tune will ensure the largest increase in vehicle performance. Using the highest grade of fuel available in your area is mandatory. This file is designed for "Race only Use" as the timing, fuel, and throttle response settings are very aggressive. in fact, the adjustments are so aggressive, that we do not recommend it for daily driving as it may cause your vehicle to try to jump out from a stop and easily spin the tires. Finally, with the automatics, we implement entirely new shift points and firmness settings to further enhance the all-out performance of the vehicle. Nitrous (91-unleaded race gas) - Our nitrous option can be added to any of our previously mentioned tune options, but only for 91-octane unleaded fuel. Easy to load; easy to restore. Not only are the custom tunes easy to load on your vehicle, it is just as easy to restore your factory settings. When you load your custom tune on the vehicle, the tuner automatically stores your vehicle's factory settings. To return the vehicle to its factory settings, just plug the tuner back in, select the option to restore the factory settings, and you're done. SCT SF3/XCalibrator 3 Power Flash Tuner Features: Handheld Tuner based off of SCT's premier LiveWire Tuner Reads / Clears DTC Trouble Codes Avg. HP gain on a stock Mustang with 91 Octane = 22 HP Enhanced data logging with 8 times the onboard memory (128MB Total!) of previous handhelds in the SCT lineup Upgraded 4-line backlit display Custom tuning applications for: 2005-2009 GT, Bullitt and GT500 models

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.

**NOTE: Programming custom tunes may take 3-4 business days. We recommend ordering other products separately to avoid delay. Some heavily modified cars are not tunable with a mail order tune. Click for details.

Approximate RPM for 2005-2009 GT Manual
Gear Speed
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 1408 1721 2034 2347


Approximate RPM for 2005-2009 GT Automatic
Gear Speed
25 MPH 35 MPH 45 MPH 55 MPH 65 MPH 75 MPH
1 3704 5185 6667      
2 2634 3688 4741 5795 6849  
3 1771 2480 3189 3897 4606 5314
4 1150 1610 2070 2531 2991 3451
5 817 1143 1470 1797 2123 2450

Installation Time:

(approx) 4 Hours

Difficulty Level:

Mechanical expertise or professional installation required.

What's in the box?

  • SCT SF3/X3 Power Flash Tuner
  • (1) One USB PC Interface Cable
  • Ford Racing 3.73 Gears
  • Motive Gears 8.8" Rear End Installation and Bearing Kit
  • (3) quarts Royal Purple Max Gear 75w140 Gear Oil
  • Free Tunes For Life

Manufacturer Installation Guides:

Downloading a Tune to Your SCT Device

Customer Submitted Installation Guides:

Differential Gears - Installation Instructions

What's in the box?

  • SCT SF3/X3 Power Flash Tuner
  • (1) One USB PC Interface Cable
  • Ford Racing 3.73 Gears
  • Motive Gears 8.8" Rear End Installation and Bearing Kit
  • (3) quarts Royal Purple Max Gear 75w140 Gear Oil
  • Free Tunes For Life
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Fitment:
  • GT 05, 06, 07, 08, 09
  • GT500 07, 08, 09
  • Bullitt 08, 09
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Known Exceptions:
Fits Mustangs equipped with a 8.8" rear end only.

Customer Reviews