What does axle code L9 mean?

electronic rear locking differential
Answered on Apr 14, 2022. Your Ford l9 axle code indicates you have an electronic rear locking differential and a 3.73 ratio. The codes on that sticker all tell you something about your vehicle, from the wheel size to the exterior paint color.

How do I know if I have an 8.8 or 9.75 rear end?

While the Super 8.8’s cover has a bulge for the ring gear, it’s not anywhere near as pronounced as the 9.75’s. Once you know what to look for, it’s pretty simple to tell the two rear ends apart. You’ll just have to throw on your reading glasses and take a look under your truck to figure out the difference.

Is 3.55 a good gear ratio?

BEST TOWING RATIO: In general, the best towing axle ratio for most of the post-2010 pickups is in 3.55 or 3.73. Those ratios provide very good acceleration with gas V-8s and diesels.

What does l9 mean on F150?

A l9 axle code on your Ford F150 tells you what kind of differential and ratio your truck has. Based on Ford axle charts, it looks like you have an electronic locking differential and a 3.55 ratio.

What did the 8.8 rear end come in?

First appearing in 1977, the 8.8 is found in almost all Ford V8 cars from ’86 on, and in V6 Rangers and Explorers. There are 24 different Fords that offered the 8.8 rear axle. The weakest points of the 8.8 are the 28-spline axles (1.18 inches in diameter).

How do I identify my axle?

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. The number can be used to identify the axle, the year of manufacture, and the model vehicle the axle originally came from.

Is a 3.55 axle ratio good for towing?

It’s pure mechanics. BEST TOWING RATIO: In general, the best towing axle ratio for most of the post-2010 pickups is in 3.55 or 3.73. Those ratios provide very good acceleration with gas V-8s and diesels.

What kind of axle do I have?

Stamped Number on the 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 much can a 3.55 axle tow?

The standard 2021 Ram 1500 axle ratio of 3.21: has a maximum towing capacity of 8,230 pounds. Increasing the axle ratio to 3.55:1 pushes the towing capacity to 9,930.

What is a 3.55 axle ratio?

Understanding Axle Ratios Technically, the number should be expressed as a ratio, such as 3.55:1, meaning the drive shaft turns 3.55 times for each turn of a wheel. But that gear ratio would most commonly be referred to as “3.55” or simply “three fifty-five.”

Which is better 3.31 or 3.55 axle ratio?

Normally, the 3.31 would get you better gas mileage, on highway. But, with the 3.55 you will get a bit more pulling power so less time at higher RPM to get your trailer moving and when going uphill. If most of your towing is flat highway, the 3.31 should do you fine.