91913-456 SPEEDWAY MOTORS Bolt Ring Pinion Gm

Review SPEEDWAY MOTORS Gm Bolt 7.5 Ring And Pinion 4.56 Ratio Series for GM 2010–2027

The Speedway Motors 91913-456 GM 10-bolt rear end housing is a high-quality aftermarket part designed to fit 1965-1987 GM cars and trucks. This housing is suitable for use with a 7.5-inch ring gear and a 4.56:1 ratio, making it an excellent choice for those seeking improved acceleration and better overall performance. The housing comes with a 27 spline output shaft, which is compatible with various types of drivetrains and differentials.

This product is manufactured using new, high-tensile steel, ensuring excellent strength and durability. The 10-bolt design provides added rigidity and improved weight distribution, enhancing the overall performance of the vehicle. The housing is also precision-machined to ensure a perfect fit and optimal function.

The 91913-456 GM 10-bolt rear end housing is designed to be a direct replacement for the factory unit, making installation straightforward and hassle-free. It comes with all necessary hardware, including new bolts, seals, and gaskets, to ensure a proper installation and a leak-free operation.

Additionally, this housing is compatible with various aftermarket differentials and limited-slip units, allowing customization and upgrades to enhance the performance of the vehicle. For those seeking improved traction and better handling, this housing is the perfect starting point.

The Speedway Motors 91913-456 GM 10-bolt rear end housing is an excellent choice for those seeking a high-quality, durable, and reliable replacement for their factory unit. With its strong construction, precise machining, and compatibility with various aftermarket upgrades, this housing is sure to provide enhanced performance and improved driving experience.

The Speedway 91913-456 GM 10-bolt rear end with a 7.5 ring gear and 4.56 ratio, 27 spline-3 output, is a popular choice for those looking to upgrade their vehicle's rear end for better performance and towing capacity. Here are some potential advantages and disadvantages of purchasing this particular rear end:

1. Improved Performance: The 4.56 ratio offers better acceleration and towing capabilities compared to the standard 3.42 ratio. This makes it an excellent choice for those who frequently tow trailers or haul heavy loads.

2. Durability: The 10-bolt design is known for its strength and durability. This rear end can handle high torque and horsepower, making it a popular choice for performance applications.

3. Versatility: This rear end is compatible with a wide range of GM vehicles, making it a versatile option for those who may need to swap it between different vehicles.

4. Affordability: Compared to other high-performance rear ends, the 10-bolt 4.56 is relatively affordable, making it an attractive option for those on a budget.

1. Limited Compatibility: This particular rear end is only compatible with GM vehicles that use the 10-bolt design. This may limit the number of applications for some users.

2. Larger Ring Gear: The larger ring gear may require the use of aftermarket drivetrain components, such as a custom driveshaft, which can add to the cost.

3. Potential Noise: Some users have reported increased noise levels from the 10-bolt design, particularly when towing or under heavy loads.

The Speedway 91913-456 GM 10-bolt rear end with a 7.5 ring gear and 4.56 ratio is a solid choice for those looking for improved performance, durability, and versatility in their rear end assembly. While it may have some limitations and potential drawbacks, such as compatibility issues and noise levels, the benefits it offers, particularly in terms of acceleration and towing capacity, make it a worthwhile investment for many vehicle owners.

If you're looking to upgrade your vehicle's rear end for better performance and towing capabilities, the Speedway 91913-456 GM 10-bolt rear end with a 7.5 ring gear and 4.56 ratio is an excellent option to consider. Just be sure to double-check its compatibility with your specific GM vehicle and factor in any necessary additional costs for drivetrain components or customizations. Overall, this rear end offers a great balance of affordability, durability, and performance, making it a smart choice for many applications.

Details:

Yes, I recommend this product. Looks like quality material went into the product all way around even in packaging. 7.50 diameter ring gear. Application this part fits 1975-79 omega.

1.438 diameter pinion. The gears looked great and were packaged securely. Part # 91913-456 condition new brand Speedway motors sold each details info important note: 3.23 and numerically higher ring pinion ratios are designed for use with a 3 series carrier. Headquarters.

specifications differentialsdepo:

• for makes: Gm
• for years: 2010–2027
• brand: Speedway Motors
• mpn: 91913-456
• type: Differential Ring Pinions
• item length: 15.00
• california prop 65 warning: True

shipping differentialsdepo:

• carrier: ups
• transit: 3-7 days
• service: ups ground
• class: standard
• type: fixed

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

returns differentialsdepo:

• paid by: seller
• time: 30 days
• policy: returns accepted

offer differentialsdepo:

• sold #: 14
• availability: in stock
• price: $366.99
• item condition: New
• options: ship-to-home
• started: november 17, 2025
• in stock #: 1

payments differentialsdepo:

• other
• credit card: visa
• wallet: paypal

seller differentialsdepo:

• city: lincoln, nebraska
• # reviews: 337679
• rating: 99.5%