What is the gear ratio for a 2005 Ford F350 dually?
The rear axle ratio on a 2005 Ford F-350 dual-rear-wheel (dually) truck is not fixed; there isn’t a single gear ratio that covers all builds. Most 2005 F-350 DRW models used common axle ratios around 3.73, 4.10, or 4.30:1, with 4.56:1 appearing on some specific configurations.
In detail, Ford offered several axle options for the 2005 F-350 Super Duty, influenced by the engine choice, drivetrain (2WD vs 4x4), and whether the truck carried a towing package. To know the exact ratio on a given truck, owners should verify the axle tag, door sticker, or VIN through a dealer or a reliable decoder. The ratio affects towing performance, acceleration, and fuel economy, especially on heavy-duty duty cycles typical of dual-rear-wheel trucks.
Common rear axle ratios for the 2005 F-350 DRW
Before listing the typical ratios, note that exact figures can vary by model and production run. Use the vehicle’s axle tag or VIN to confirm the precise number for any specific truck.
- 3.73:1
- 4.10:1
- 4.30:1
- 4.56:1 (less common, on certain configurations)
Across 2005 F-350 DRW configurations, the 4x4 and diesel variants frequently featured 4.10:1, while other trims or engine choices could use 3.73:1 or 4.30:1 depending on the factory option list. Always verify for the exact build.
How to verify your truck's gear ratio
To confirm the precise axle ratio on your 2005 F-350 dually, use these methods.
Axle tag
Look for a stamped axle tag on the differential cover or axle tube. The tag or stamp will typically display the ratio (for example, “3.73” or “4.10”). If the cover is sealed, you may need to remove it to read the tag.
Door sticker
Check the driver’s door jamb sticker for an axle ratio field. Some trucks list the rear axle ratio there, sometimes alongside the front axle ratio or other drivetrain specs.
VIN decode or dealer contact
Provide the VIN to a Ford dealer or use a reputable online VIN decoder to retrieve the exact axle ratio. VIN-based builds can reveal the factory-installed gearing and options for that specific truck.
Summary
In short, the 2005 Ford F-350 dually did not have a universal gear ratio. Common rear axle ratios included 3.73:1, 4.10:1, 4.30:1, and occasionally 4.56:1, depending on the truck’s configuration. For an exact figure, check the axle tag, door sticker, or use a VIN-based lookup from Ford or a trusted decoder.
