What is the difference between a 31 spline and a 28 spline?
When it comes to automotive components, understanding the differences between various specifications can be crucial for both performance and compatibility. One such distinction that often arises in discussions about drivetrain components is between 31 spline and 28 spline axles. In this article, we will explore what these terms mean, their applications, and how they can affect your vehicle's performance.
What Are Splines?
Splines are ridges or teeth on a drive shaft or axle that allow for a secure connection between two components, such as a differential and an axle shaft. The number of splines refers to the count of these ridges, which can significantly influence the strength and torque capacity of the axle.
Key Differences Between 31 Spline and 28 Spline
The primary differences between 31 spline and 28 spline axles can be summarized as follows:
- Strength: A 31 spline axle is generally stronger than a 28 spline axle due to its increased number of splines. This allows for better torque distribution and reduces the likelihood of failure under heavy loads.
- Applications: 31 spline axles are often found in high-performance vehicles and trucks that require enhanced durability, while 28 spline axles are more common in standard vehicles and lighter applications.
- Compatibility: When upgrading or replacing axles, it's essential to ensure that the spline count matches the differential and other drivetrain components to avoid compatibility issues.
Choosing the Right Spline Count for Your Vehicle
When deciding between a 31 spline and a 28 spline axle, consider the following factors:
- Vehicle Use: If you plan to use your vehicle for heavy towing, off-roading, or racing, a 31 spline axle may be the better choice for its added strength.
- Budget: Upgrading to a 31 spline axle may involve additional costs, including the need for compatible components. Assess your budget and needs before making a decision.
- Future Modifications: If you anticipate future upgrades to your vehicle's powertrain, opting for a 31 spline axle from the start can save you from needing to replace components later.
Conclusion
Understanding the differences between 31 spline and 28 spline axles is essential for making informed decisions about your vehicle's drivetrain. Whether you're upgrading for performance or simply replacing worn components, knowing the right spline count can help ensure your vehicle operates smoothly and efficiently.
Frequently Asked Questions
How much power can 30-spline axles handle?
"This will give you a figure that represents the maximum amount of torque transmitted to both axles if you launched at your engine's torque peak and dead-hooked out of the hole. A 30-spline axle is rated at 6,200 lb-ft, a 31-spline at 7,000, a 33-spline at 8,200, a 35-spline at 9,600, and a 40-spline at 12,000.
How do you know if a spline is 28 or 31?
The obvious differences in 28 and 31 spline axles will be the number of splines! When you count the number of teeth (splines) on each axle, you can find out which option you have. 31 Spline Axles also tend to be larger in diameter to accommodate the increased amount of splines.
Are all Ford 8.8-31 spline?
A common weak spot in the Ford 8.8 rear axle is its 28-spline axleshafts (1.18 inches in diameter). Stronger 31-spline axles are available from the aftermarket, but they require a new carrier and side gears to be installed, negating any cost-savings.
What is the diameter of a 31 spline?
31 spline shafts have a major diameter of 1.333" at the splines.
How do you know what size spline to use?
The spline size needed depends on the size of the channel in your screen frame, as well as what type of screen you use. The best way to ensure you have the correct size spline is to measure the diameter of the existing spline in the frame and then purchase the same size.
What is the diameter of a 28 spline axle?
1.2083
Axles Schmaxles
| STRENGTH COMPARISON OF COMMON O.E. AUTOMOTIVE & RACING SPLINES | ||
|---|---|---|
| # Teeth | Pressure Angle | Major Diameter |
| 28 | 45 deg | 1.2083 |
| 31 | 45 deg | 1.3333 |
| 33 | 45 deg | 1.4167 |
Are more splines stronger?
Generally, more splines means a larger-diameter, stronger shaft (the 14-bolt 30-spline is an exception).
What is the difference between 28 spline and 31 spline?
The obvious differences in 28 and 31 spline axles will be the number of splines! When you count the number of teeth (splines) on each axle, you can find out which option you have. 31 Spline Axles also tend to be larger in diameter to accommodate the increased amount of splines.
Do splines add strength?
Synopsis: Splines are a well-known technique for adding strength to miter joints, but there are times when a visible spline spoils the look of a box; for example, when you have carefully matched grain wrapped around all four sides.
Why is the Ford 8.8 rear end so popular?
And Broncos especially the four-wheel drive models and those with bigger engines. But not always because mine's a 300. And it's got an 8.8.
