How much horsepower can a 28 spline Ford 9-inch handle?
The Ford 9-inch rear axle is a popular and durable choice for high-performance applications, and the 28 spline version can handle a significant amount of horsepower. According to industry experts, a properly built and maintained 28 spline Ford 9-inch rear axle can reliably handle up to around 800 horsepower.
Understanding the Ford 9-Inch Rear Axle
The Ford 9-inch rear axle is known for its strength, durability, and versatility. It was used in a wide range of Ford vehicles, from muscle cars to heavy-duty trucks, and has become a favorite among enthusiasts and racers. The 28 spline version, in particular, is a robust option that can support higher levels of power and torque.
Factors Affecting Horsepower Capacity
The maximum horsepower a 28 spline Ford 9-inch can handle depends on several factors, including:
- Axle Components: The quality and condition of the axle shafts, bearings, differential, and other internal components play a crucial role in determining the axle's strength and durability.
- Gear Ratio: The gear ratio of the differential affects the amount of torque transmitted to the wheels, which can impact the overall horsepower capacity.
- Axle Housing: The strength and construction of the axle housing itself are important, as it needs to withstand the forces generated by high-horsepower applications.
- Proper Installation and Maintenance: Ensuring the axle is properly installed, aligned, and maintained is essential for maximizing its performance and longevity.
With the right components, gear ratio, and proper installation and maintenance, a 28 spline Ford 9-inch rear axle can reliably handle up to around 800 horsepower. However, it's important to note that individual results may vary, and it's always best to consult with a qualified professional for specific recommendations.
Upgrading and Modifying the Ford 9-Inch
For those seeking to push the limits of their Ford 9-inch rear axle, there are various upgrade and modification options available. These can include upgrading to stronger axle shafts, installing a higher-capacity differential, or even swapping the entire axle assembly for a more robust aftermarket unit. However, these modifications should be carefully considered and performed by experienced professionals to ensure the safety and reliability of the final setup.
Why is the Ford 9-inch so strong?
The size of the ring gear is another key element of the 9-inch's strength. At 9 inches in diameter (hence the name), it is larger than many other factory rearend options, such as the GM 10-bolt or 12-bolt rear axles, giving it a larger surface area to distribute the forces of torque.
What is the most popular spline size?
For standard screening material, 0.140” and 0.160” spline are the most commonly used sizes. For thicker screening products, 0.125” is the most common.
How much horsepower can a Ford 9 inch rear end handle?
800 horsepower
QA1's Ford 9-Inch
QA1's 9-inch housing is fabricated with a focus on strength and lightweight performance, rated to handle up to 800 horsepower.
What are the benefits of the Ford 9 inch rear end?
Additionally, the 9-inch housing's strength accommodates the increased loads from more robust braking systems without compromising its integrity. Another major advantage of the 9” is its ability to accept a wide range of gear ratios, thanks to the third-member design.
Are more splines stronger?
Generally, more splines means a larger-diameter, stronger shaft (the 14-bolt 30-spline is an exception).
How much power can a Ford 9-inch 28 spline handle?
They're good to 800 hp, if built properly. The next step beyond that would be the high end, completely redesigned, Mark Williams billet-aluminum housing. "It's the same deal with common production 28-spline axles.
Is 28 or 31 spline better?
31 spline axles which are about 30% stronger than the 28 spline axles making them a popular aftermarket upgrade for Fox, SN95, and New Edge Mustang owners.
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 much HP can Ford 10 speed handle?
1,000 horsepower
GPZ's high torque capacity, great torque transfer capabilities and enhanced durability have enabled the 10R80 to handle upwards of 1,000 horsepower without increasing the clutch capacity by using additional friction surfaces. The 10R80 transmission platform is now more than five years old.
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 |
