Plymouth Cuda Rear Axle Gear Ratio Tags

A correct axle tag is a finishing detail that helps preserve useful identification information during a Cuda or Barracuda restoration. This category includes Mopar tags marked for 3.23, 3.55 and 3.91 ratios on 8-3/4-inch axle applications, together with 3.54 and 4.10 tags listed for 9-3/4-inch Dana 60 applications. Match both the axle type and the ratio. Two tags with similar numbers are not automatically interchangeable.

Match the Tag to the Installed Axle

Start by identifying the rear axle currently in your vehicle. A classic Plymouth may have received a replacement axle or a different gear set over the years. Original vehicle documentation can help establish how the car was built, but it does not prove that the original gearing remains installed. For an accurate restoration record, confirm the present assembly and ratio before selecting a reproduction tag.

The 3.54 Dana 60 tag and 3.55 tag listed for an 8-3/4-inch axle are separate choices, even though the numbers are close. Choose the marking and application that describe your assembly, rather than whichever listing looks closest to the ratio you remember. If the axle has been rebuilt, the rebuilder’s documentation may provide the information needed to make that choice.

Replacement Tags Are Identification Details

A replacement gear ratio tag does not alter the gear ratio or establish the condition of the differential. It identifies the specification you have verified. Retain any original tag and photograph its markings before cleaning or disassembly. If those markings disagree with the car’s current configuration, resolve the difference before fitting a new tag.

Check individual listings for photographs, attachment details and supplied quantities. Do not assume that mounting hardware or additional identification tags are included. When replacing missing hardware, use the correct service information for the axle rather than treating the reproduction tag as an installation guide.

Organize Your Drivetrain Restoration Records

Record the axle type, installed ratio, any known rebuild information and the selected part number together. This is especially helpful for a car with an engine, transmission or rear axle swap. A clearly documented assembly makes future parts selection easier and helps keep appearance details consistent with the actual mechanical configuration.

Compare the product description with the original tag’s shape and markings when available. For a factory-style restoration, the small details deserve the same application check as larger drivetrain components. If you are uncertain whether your car has the 8-3/4-inch assembly or a Dana 60, identify that first so the replacement tag accurately represents the vehicle.

Explore more Plymouth Cuda restoration parts or contact Josh's Muscle Car Parts with your model year and component details for help identifying a listing.