Question: How Do I Find My Axle Code?

Do front and rear axle ratios have to match?

Final drive ratios must be the same.

A diff doesn’t have a ratio and is always the same, ie, One wheel stopped, the other side twice the speed.

Any difference in final drive ratios front to rear will cause failure unless a centre diff is running the DIFFERENCE of speeds..

How do I know what rear axle I have?

It’s worth noting that rear axles can sometimes be positively identified by a casting number and date stamped on the differential cover or axle tube. However, road debris, dirt, grime, and general age can obscure these numbers.

What does the 8th digit in a VIN number mean?

The 8th Eighth Digit in the VIN Vehicle Identification Number Indicates Engine.

How do you decode a VIN number?

How to decode a VIN?Digits 1 through 3 combined is the WMI, (World Manufacturer Identifier).Digits 4 through 8 represent the vehicle descriptor section.Digit 9 is a check digit.Digits 10 through 17 is the Vehicle Identifier Section.The 11th digit is the manufacturer’s plant code.More items…•

Is 3.42 or 3.73 better?

The 3.42 is fine for towing smaller boats, plus you will get better gas mileage for everyday driving. If I were towing frequently on hilly roads, I might would go for the 3.73 for better gas mileage while towing, but the 3.42 should be fine with a 205.

How do I find my axle spline?

If you have your axles removed, count the number of splines on the axle. It’s helpful to mark one of the splines with a marker when counting the number. Determining the float type of your differential can help narrow down your search. The float type is the method in which your axles are secured into the housing.

Does VIN number tell gear ratio?

The vehicle identification number (VIN) is a 17-digit code that is used to identify and track every automobile produced. Each number and letter contained within a VIN reveals information about the vehicle, such as the make, model, production year and engine size. … The VIN will not give you gear ratios in most cases.

How do I find my Ford axle ratio?

Open the front door on the driver’s side. Locate the Truck Safety Compliance Certification Label on the door pillar near the door latch. Locate the two-digit code in the box labeled “AXLE,” which is just below the bar code. Match the code on the label to the corresponding rear axle ratio.

How do you read a Ford axle code?

If you open the drivers door and look at the door jamb, you’ll see a sticker like the one shown below: You’ll see that the area labeled (F) is for the Axle Code.

Are 3.73 or 4.10 gears better?

Vice versa, if the gear ratio is lower it has worse acceleration but a higher top speed. So, by changing your gear ratio, no power levels are being changed, just the torque….WHICH GEAR RATIO IS FOR YOU?3.73 RATIO4.10 RATIOLower torqueHigher torqueBetter gas mileageWorse gas mileageHigher top speedLower top speed1 more row•May 12, 2020

How do I know what axle My truck has?

Pop a couple of axle stands under your truck and have a look at the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter your Ford, Dodge or Chevy differential has. They can also be identified by whether the center section is an integral or dropout design.

How do I find my axle ratio?

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.

How do I identify my Chevy rear axle?

Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box.

What is axle code?

The number of axles in the tables in this section are derived from the axle code shown on the vehicle’s Certificate of Registration. This code is used to record the layout and number of axles and wheels on vehicles. Non-driven axles are included (eg retractable, tag, lazy, pusher axles etc).

How can I tell what gear ratio I have without pulling cover?

So an easy way to determine your actual gear ratio is to check the tag attached to the differential cover by the cover bolts. On the tag there should be some numbering such as 3.54 or 3.73, either of those numbers will give you the stock axle ratio.

Is 3.55 or 3.73 gears better?

3.55 will give you a little better gas mileage on the highway and slightly more highway oriented performance. 3.73 may be better for towing, lower end power (off the line acceleration), and may result in worse gas mileage on the highway.