How do I know what axle my Ford truck has?

How to Find Out the Axle Ratio on a Ford Pickup

1. Open the front door on the driver’s side.
2. Locate the Truck Safety Compliance Certification Label on the door pillar near the door latch.
3. Locate the two-digit code in the box labeled “AXLE,” which is just below the bar code.

How do I identify my Ford rear end?

The model number is located on the top right hand corner of the tag, J210-S, for example. Locate the identification tag on Ford manufactured rear end units. According to Fordification.com, the tag is located on the driver’s side of the unit, mounted vertically, facing the front of the vehicle.

Is a 3.31 axle ratio good?

So here’s the short take on how to choose the best axle ratio: That’s because the 3.31 ratio keeps the engine rpm lower than would the 3.55 ratio. Likewise, a 3.55 ratio would get better mpg at highway speeds than it would equipped with 3.73s – all other things being equal.

How do I identify my axle?

To figure out exactly what axle you have, you can look for the Dana stamped bill of materials number. This stamped number can usually be found on the righthand side or on the longer axletube on the same side of the tube as the differential cover, facing the rear of the truck.

How do I identify my Dana axle?

Is Ford 8.8 limited slip?

Like other Ford axles, the 8.8-inch came in both 28-spline and 31-spline versions. Aftermarket lockers are available to adapt the 8.8-inch open rear to limited-slip. If you find one with the correct axle width, you can build it to your own specifications easily.

How do I know what my axle ratio is?

Method 1: Count the number of teeth on the ring gear and the pinion. Divide the number of the ring gear’s teeth by the number of the pinion’s teeth. This will give you the axle ratio.

What does an axle code on a Ford truck mean?

Ford axles codes contain one or two character. Any code beginning with a letter (an alpha code) indicates the vehicle is equipped with a limited slip differential, except as shown below. Some pickup trucks with axle codes that are numbers only (numeric codes) are equipped with limited slip differentials.

What does the number 4l11 mean on a Ford axle?

The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. It also has a 9-inch ring gear. The axle tag typically has two lines of numbers and letters stamped on it.

What is the Axle code for a 2004 Ford Excursion?

2004 Ford Super Duty Axle Codes: 31 — 3.73 non-limited slip, F-250/Excursion 32 — 4.10 non-limited slip, F-250 41 — 3.73 non-limited slip, F-350

Where do I find the rear axle code?

Rear axle codes can be found on the Safety Standard Certification label attached to the left drivers side door lock post. The code appears as a number or letter/number combination in the ‘Axle’ column of the label.