If you ordered the free upgrade w/5-speed you got the "Z" 3.08 gears. If you ordered the upgrade for the AOD, you got the "E" 3.27 ratio. It made no difference what body style you had. FYI, A friend of mine has a '91 GT vert 5-speed with 3.08's.
Full Answer
What is the rear end gear ratio of a Ford Mustang?
The Ford Mustang rear end specifications have changed quite a bit since the beginning of the Fox Chassis in 1979. From the measly 2.26:1 gear found in some of the first years of the Fox Body Mustang to the 3.73:1 ratio found in some of the most current performance models, Ford has offered factory gear choices to fit almost every driving style!
What is the best gear ratio for a Cobra Mustang?
SVT Cobra Mustangs and Shelbys offer ideas for potential upgrades. A lower gear ratio (2.73, 3.08, etc.) will have a slower acceleration. But lower rear gear ratios allow for higher top speeds and better fuel economy. Higher gears are sometimes referred to as shorter gears and lower gears as taller.
What kind of transmission does a Ford Mustang have?
Automatic Transmission. Again, no special laboratory results behind this one, just real world satisfaction. The gold standard for automatic Mustangs is an axle ratio of 4.10:1. This extra bit of gear makes up for the lower first gear of the transmission and the slip of the converter. This is for street and strip use.
What is the stock axle ratio in a Mustang?
The stock axle ratio in a Mustang can vary anywhere from 2.73:1 to 3.73:1, depending on year, model and additional options selected when the vehicle was originally built/purchased. Typically, owners change the gear to a steeper one, such that the car accelerates harder off the line.
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What is the best gear ratio for Mustang GT?
What Gear Ratio Should I Buy? Most owners tend to choose a 3.55, 3.73, or 3.90 for a Mustang that is daily driven. If you are serious about speed, then you might consider the 4.10 or a 4.30.
What Mustangs have 8.8 rear end?
Then, from 1986-2010, the Ford Mustang 8.8 rear end went into all V8 Mustangs, and the Ford 7.5” rear end now went into all 4-cylinder (2.3L) up to 1993 and V6 Mustangs (3.8L). Every version and model of the Mustang from 2011 to the current 2022 Mustang received an 8.8 rear end.
How much gears does a Ford Mustang have?
A Ford Mustang, when taken care of adequately, can last about 200,000 miles. The average miles driven per year is about 12,000 miles, making the average Mustang last about 16 years, once again, if it is maintained well. The car itself is built well, so making it last long is up to the owner to take good care of it.
What kind of differential does a Mustang have?
The majority of Mustangs come equipped with a limited-slip type differential called Traction-Lok from Ford. A limited slip differential maintains traction by “sensing” when one wheel is slipping, locking the wheels together and thereby redirecting greater torque to the non-slipping wheel.
Is 3.55 or 3.73 gears better?
A numerically higher axle ratio provides a mechanical advantage to send more of the engine's available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.
Are Ford 8.8 rear ends strong?
Ford 8.8 Strength ComparisonThe truth is that the Ford 8.8 is virtually a clone of the Chevy 12-bolt and therefore almost as strong. Most rear axles are described by their ring-gear diameters, with larger being better.
What makes a Mustang a GT?
If your Mustang has a "GT" appended to the end of the name that likely means your vehicle isn't only fast and powerful, but it's also built to comfortably accommodate the occupants.
What is high mileage for a Mustang GT?
According to Motor and Wheels, an average Ford Mustang can make it to 200,000 miles. They explain that with the proper care and attention to maintenance, it can go even longer. One owner of a 1996 Mustang GT got 300,000 miles out of it with only clutch problems during his ownership.
What transmission does the Mustang GT have?
Mustang offers three available transmissions, the 10-speed automatic, TREMEC® six-speed manual, and the TREMEC seven-speed dual-clutch transmission, each designed to get the most out of your vehicle.
Does Mustang GT have limited-slip differential?
Since then, limited-slip differentials have become a standard feature in Mustangs. GTs have had a standard limited-slip differential since 1986, and four and six-cylinder Mustangs have had one since 2011.
How do you tell if you have a 7.5 or 8.8 rear end?
5:487:21Learning the visual difference between the Ford 7.5 and 8.8 rear ...YouTubeStart of suggested clipEnd of suggested clipBut when you look at the rear end back there see the nine o'clock and 3 o'clock positions yep it'sMoreBut when you look at the rear end back there see the nine o'clock and 3 o'clock positions yep it's rounded 7.5 boo the second-gen Rangers had rear ends that were 8.8 if they had the v6.
Why do Mustangs slip so much?
2:085:075 Reasons Why Mustangs Always Crash!! - YouTubeYouTubeStart of suggested clipEnd of suggested clipPoor tires and surface quality can also lead to crashes. Number four they often have a very basicMorePoor tires and surface quality can also lead to crashes. Number four they often have a very basic rear suspension setup.
What gears do Mustangs need?
Forced induction Mustangs don’t need a steep gear since they have the power to get moving. A 3.27 or 3.08 set are both good for acceleration and top end speed
What is the best transmission ratio for a Mustang?
For manual transmission Mustangs, a 3.73:1 is typically the gold standard. There isn’t a particularly scientific reason behind this but rather, there is a huge amount of real world experience that says 3.73’s work great with manual ‘Stangs (aka, many satisfied owners). They offer great performance around town and off the line. The majority of Mustangs come with a ratio of 2.73-3.31 from the factory. 3.73’s are available from the factory depending on package options. If you have such an equipped Mustang and still feel that 3.73’s are not enough, the next jump is up to 4.10’s. However, 4.10:1 is a real steep gear. For street use, I personally wouldn’t recommend it with a manual transmission. A 3.55:1 gear is another solid choice for 5/6-speeds. In terms of performance versus RPM, there isn’t a huge difference between 3.55’s and 3.73’s, therefore the majority of people simply go 3.73:1.
How do My Aftermarket Rims Affect Gear Ratios?
The larger the overall tire height (tire sidewall height x2 plus the wheel diameter), the slower the car will accelerate. This is because the wheel takes more force to turn. As a result, the gears will feel steeper than the previous setup. The reverse is also the same. If a smaller tire height is incorporated, the wheel will spin faster and the gears will feel shorter than before.
Why Change my Gears?
Swapping the rear end gear is a classic hotrod mod. By changing the axle ratio, vehicle acceleration can be increased or decreased or, top end speed can be increased or decreased. There is an inverse relationship between acceleration and top speed. If you want more acceleration, top speed will be sacrificed. If a higher speed limit is desired, than acceleration will take a bit of a hit. The stock axle ratio in a Mustang can vary anywhere from 2.73:1 to 3.73:1, depending on year, model and additional options selected when the vehicle was originally built/purchased.
What is the stock axle ratio on a Mustang?
If a higher speed limit is desired, than acceleration will take a bit of a hit. The stock axle ratio in a Mustang can vary anywhere from 2.73:1 to 3.73:1, depending on year, model and additional options selected when the vehicle was originally built/purchased.
What does rear gears dictate?
Your rear gears dictate at what speed you top out and how fast you take off from a light. The right ratio can round out your highway cruiser or top dragster builds.
Does a gear change increase the engine's output?
Typically, owners change the gear to a steeper one, such that the car accelerates harder off the line. A gear change does not increase the engine’s output but instead manipulates it across the power band. In a nutshell, if you’re looking to be pushed back further into your seat when you stomp the ‘Go’ pedal, a gear change will do exactly that.
What axles did the 2005 Mustang have?
The 2005-2010 V6 Mustangs with a Ford 7.5 rear end used 28 spline rear axles, however, the 2005-2010 V8 Mustangs with 8.8” rear ends were upgraded and came standard with the stronger 31 spline rear axles. For 2011-2014 Mustangs, both the V6 and 5.0L V8 Mustang were now equipped with 31 spline axles.
How many splines are in a 2001 Mustang?
All 79-04 Ford Mustang Rear Ends were equipped with 28 spline axles with the exception of the 2001 and 03-04 SVT Cobras. They came from Ford with 31 spline axles in their IRS rear end.
How to find rear axle ratio?
Another way to determine your rear axle gear ratio is to open the door and look for the Vehicle Certification (VC) tag. Mustang rear end code characters that indicate whether your car has a limited-slip differential or an (open) conventional differential as well as your rear axle gear ratio can be found on the lower right section of the VC tag, labeled “AX”. This tag, also known as the “data plate”, can be found on the driver side door lock face or the B-pillar depending on the year that you Mustang.
What is the rear end of a 1979 Mustang?
If you own a 1979 to current Mustang, then it came equipped with one of the two Ford rear ends – Mustang 7.5” rear end or the Ford Mustang 8.8” rear end. All 1979 Mustang rear axles through the 1985 fox body Mustangs featured the 7.5” rear, with the exception of the very first year of the Fox that was equipped with a “carry-over” 6.75” rear end from the Mustang II that was only behind the 4-cylinder and 6-cylinder variants.
What is the differential on a Mustang 99-01?
The 99-01 and the 03-04 Mustang SVT Cobras were equipped with an Independent Rear Suspension (IRS) that used the Ford 8.8” differential . Starting in 2011, the V6 (3.7L) was upgraded to feature the same Ford 8.8” rear end found in the V8 (5.0L Coyote) Mustangs.
What is the rear end ratio of a Ford Mustang?
The Ford Mustang rear end specifications have changed quite a bit since the beginning of the Fox Chassis in 1979. From the measly 2.26:1 gear found in some of the first years of the Fox Body Mustang to the 3.73:1 ratio found in some of the most current performance models, Ford has offered factory gear choices to fit almost every driving style! Use this guide to have your Mustang gear ratio explained!
What was the gear ratio on the Fox Chassis?
Gear ratios went through a number of changes and options through the first years of the Fox Chassis. Some very tall gears were used in 1980 and 81 having 2.26:1 ring and pinion gears with 1981 also having the 3.08:1 option. Starting in 1982, the tallest gear option you would find in the rear end of this pony car was a 2.73:1.
What is the drive shaft on a Mustang?
Your driveshaft connects to the smaller pinion gear. This pinion gear then turns the larger ring gear using interlocking teeth. This is what turns the rear axle and with it, your Mustang’s rear wheels.
Why is the rear ratio of a Mustang so bad?
The downside of higher gears is that you’ll also sacrifice some top speed. Because this makes the engine work harder , it can be bad for it long term. This is why people usually stay close to their Mustang’s stock rear ratio.
Why is the Mustang mid range?
It’s because of fuel efficiency that most Mustang owners select a middle-range gear. This offers good cruising mpg and sufficient power.
How many times does a rear gear rotate?
If you have a rear gear ratio of 3.31, the driveshaft rotates 3.31 times for each wheel rotation. (Transmission gear ratios also affect this, but those can be ignored for now).
What is a lower gear ratio?
A lower gear ratio (2.73, 3.08, etc.) will have a slower acceleration. But lower rear gear ratios allow for higher top speeds and better fuel economy. Higher gears are sometimes referred to as shorter gears and lower gears as taller. This literally refers to the size of the gear.
How does a Mustang drivetrain work?
The basics of your Mustang’s drivetrain are pretty straightforward. Power comes from your Mustang’s engine then travels to the transmission, which rotates the driveshaft. In order for the driveshaft’s rotation to travel to the rear wheels, your Mustang relies on a differential. The input of the differential is a ring and pinion gear.
What is the best rear gear ratio for a car?
You’ll want a rear gear ratio that is good for straight-line acceleration but also can cruise on the highway. Most enthusiasts in this category find that a 3.73 gear ratio is right for them. If you also want to get relatively good fuel economy, a 3.55 is a good compromise.
