91048601 SPEEDWAY MOTORS Mini Spool Gm

Review SPEEDWAY MOTORS Gm 10-bolt Mini Spool for GM 1970-76

The Speedway Motors 91048601 1970-1976 GM 10-bolt Mini Spool is a high-performance differential assembly designed for enthusiasts who want to enhance the power transfer and handling capabilities of their early-model GM vehicles. This differential is a direct replacement for the stock 10-bolt unit, offering several upgrades that make it an ideal choice for those looking to improve their ride's acceleration, traction, and overall driving dynamics.

The heart of this differential is the mini spool, which is a solid axle assembly that eliminates the differential action between the left and right wheels during hard cornering, resulting in reduced wheel hop and improved power transfer. The mini spool's design is based on the legendary Detroit Tru-Trac differential, ensuring reliable and durable performance.

This Speedway Motors 10-bolt differential also features high-quality, heat-treated gears made from SAE 4320 steel for increased strength and durability. The gears are precision-cut and honed to ensure a perfect fit and smooth operation. Additionally, the differential comes with a set of new bearings, seals, and other necessary hardware to ensure a proper installation and operation.

The housing of this differential is made from cast iron, providing excellent heat dissipation and strength. It is also surface-treated for enhanced durability and corrosion resistance. The housing comes with new mounting brackets, making it a straightforward installation.

The Speedway Motors 1970-1976 GM 10-bolt Mini Spool is a high-performance upgrade for early-model GM vehicles that delivers improved power transfer, reduced wheel hop, and enhanced handling capabilities. It is a direct replacement for the stock 10-bolt differential, making it an ideal choice for those seeking to enhance their ride's performance. With its high-quality components and durable construction, this differential is sure to provide reliable and consistent performance, making it an excellent investment for any GM enthusiast.

Pros and Cons of Buying a Speedway 91048601 1970-76 GM 10-Bolt Mini Spool

The Speedway 91048601 1970-76 GM 10-Bolt Mini Spool is a popular aftermarket rear end upgrade for classic cars. This part is known for its durability, strength, and performance enhancements. Here are some pros and cons to consider before making a purchase.

1. Improved Performance: A mini spool eliminates the torque steer and axle hop that are common with open differential setups. This results in better traction, improved handling, and smoother power delivery.

2. Durability: The Speedway 91048601 10-Bolt Mini Spool is constructed from high-quality materials and is designed to withstand the rigors of high-performance driving. It can handle more power than the stock differential, making it an excellent choice for upgraded engines.

3. Customizability: The mini spool is a versatile upgrade that can be used in various applications, including drag racing, autocross, and street driving. It can also be used with different gear ratios to suit different driving styles and track conditions.

4. Affordability: Compared to other aftermarket rear end options, the Speedway 91048601 10-Bolt Mini Spool is relatively affordable. It is an excellent option for those on a budget looking to improve their car's performance.

1. Limited Slip Differential: A mini spool does not have the ability to distribute power evenly between the wheels like a limited slip differential. This can lead to wheel hop and power oversteer in certain driving conditions, especially during aggressive acceleration.

2. Installation Complexity: Installing a mini spool requires some technical expertise and specialized tools. It involves removing the differential cover, installing the spool, and reassembling the differential. This process can be time-consuming and may require professional assistance.

3. Noise: A mini spool can generate more noise than a stock differential due to the lack of a differential lock. This noise can be annoying for some drivers and may require the use of a muffler or other noise reduction measures.

The Speedway 91048601 1970-76 GM 10-Bolt Mini Spool is a high-performance upgrade that can significantly enhance the driving experience of classic cars. It offers improved performance, durability, and customizability at a relatively affordable price. However, it comes with some drawbacks, such as limited slip action, installation complexity, and increased noise.

If you are looking for a high-performance rear end upgrade for your classic car and are comfortable with the installation process, the Speedway 91048601 10-Bolt Mini Spool is an excellent choice. It offers significant performance enhancements and can handle the power of upgraded engines. However, if you prioritize a smooth ride and quiet operation, you may want to consider other options, such as a limited slip differential or a posi unit. Ultimately, the decision depends on your driving style, budget, and preferences.

Details:

Economical way for all race cars to lock the reared. Part # 91048601 condition new brand Speedway motors sold each details info works on 70-76 Gm 10-bolt rear ends with 8.5 ring gear and 28-spline axles. Headquarters. Economical way to lock the rear end without expense of a full spool, 1970-76 Chevy, 10-bolt, 28 axle spline, 8.5 ring gear diameter, stronger and easier solution than welding spider gears.

Item details: 8.5 ring gear, 28 spline. Yes, I recommend this product. If it was easy anybody could do. Will not work in posit rear ends.

No, I would not recommend this product. Specs material type steel sold in quantity each spline count 28 mfg.

specifications differentialsdepo:

• for makes: Gm
• for years: 1970-76
• brand: Speedway Motors
• mpn: 91048601
• type: Differential Spools
• item length: 5.00

general differentialsdepo:

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

seller differentialsdepo:

• city: lincoln, ne
• rating: 99.3%
• # reviews: 317104

offer differentialsdepo:

• price: $83.99
• item condition: New
• sold #: 23
• options: ship-to-home
• started: february 11, 2025
• availability: in stock

shipping differentialsdepo:

• service: economy, expedited
• transit: 3-3 days
• class: economy, expedited
• type: fixed

payments differentialsdepo:

• credit card: diners-club
• other
• wallet: paypal

returns differentialsdepo:

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