30060 GENERAL MOTORS Bolt Posi Spline Up C10 K10 Chevy Blazer

Review GENERAL MOTORS Chevy Bolt Truck 8.875 Inch Oem Posi 30 Spline Series 3.73 And Up for CHEVY BLAZER C10 K10 2012

Introducing the premium 30060 Chevy 12-bolt Posi 8.875 rear end, specifically designed for 1963 to 1987 C10 and K10 Blazers, as well as other applicable GM vehicles. This 3.73:1 gear ratio unit is an excellent upgrade for those seeking improved performance and better handling.

The Posi 8.875 rear end comes with a limited-slip differential, ensuring power is distributed evenly between the wheels during cornering. This feature effectively eliminates wheel hop and torque steer, delivering enhanced traction and stability on the road or off the beaten path. The differential housing is constructed from high-strength steel, ensuring durability and longevity.

Featuring 30 spline axles, this rear end is compatible with a wide range of aftermarket driveshafts, making it an ideal choice for custom builds and restorations. Additionally, the 8.875-inch width provides ample clearance for large tires and wheels, allowing for impressive off-road capabilities.

The 30060 Chevy 12-bolt Posi 8.875 rear end is designed to work seamlessly with various transmission options, including the Powerglide, Turbo 350, 400, and 700R4 transmissions. Its versatility and compatibility make it an excellent upgrade for a wide range of applications, from daily drivers to high-performance builds.

This premium rear end is shipped complete with all necessary hardware and seals, ensuring a hassle-free installation process. Additionally, it comes with a one-year manufacturer's warranty, providing peace of mind and confidence in your purchase.

In summary, the 30060 Chevy 12-bolt Posi 8.875 rear end is a top-tier performance upgrade for your C10 or K10 Blazer. With its enhanced traction, durability, and compatibility, this rear end delivers superior handling, power, and versatility for both on-road and off-road adventures.

buying a 30060 Chevy 12-bolt 8.875 posi 30 spline rear end for a C10 or K10 Blazer with a 3.73 gear ratio can be a good option for those looking to improve their vehicle's performance. Here are some pros and cons to consider:

1. Improved Traction: The posi (limited slip) differential provides better traction during cornering and acceleration, making the vehicle more responsive and stable.

2. Increased Power Transmission: The 30 spline axles are stronger and can handle more power than the standard 28 spline axles, allowing for better power transmission to the wheels.

3. Durability: The 12-bolt design is known for its durability and has been used in various Chevy vehicles for decades.

4. Availability: These rear ends are widely available on the aftermarket and can be easily sourced from various suppliers.

1. Cost: The cost of a new 30060 rear end can be higher than that of a standard 12-bolt rear end due to the added features and stronger axles.

2. Installation Complexity: Installing a 30060 rear end may require additional modifications to the vehicle, such as adjusting the suspension or aligning the driveshaft, which can add to the cost and complexity of the project.

3. Weight: The stronger axles and differential may add some weight to the rear end of the vehicle, which could impact fuel economy and handling.

In conclusion, the decision to buy a 30060 Chevy 12-bolt 8.875 posi 30 spline rear end for a C10 or K10 Blazer with a 3.73 gear ratio ultimately depends on your specific needs and priorities. If you are looking for improved traction, power transmission, and durability, then this option may be worth the investment. However, if cost and installation complexity are concerns, then you may want to consider other options or modifications. Ultimately, it is essential to weigh the pros and cons carefully and consult with a professional mechanic or trusted automotive advisor before making a decision.

Details:

Series 4 for a 3.73, 4.10, 4.56 etc on up gear ratio. Good used condition, may need disassembly cleaning, it has been on the shelf for a long time. Quick shipping. Years 1964-1979 or so.

This is from a truck 12 bolt, will not fit car bolt. Rama steel Eaton gm limited slip unit.

specifications differentialsdepo:

• for models: C10, K10, Blazer
• for makes: Chevy
• for years: 2012
• brand: General Motors
• mpn: 30060
• part type: Bolt Motor
• gear ratio: 3.73
• country/region of manufacture: United States
• vintage part: Yes
• universal fitment: No
• placement on vehicle: Rear

shipping differentialsdepo:

• transit: 3-6 days
• service: ups ground
• class: standard
• type: fixed
• carrier: ups

offer differentialsdepo:

• options: ship-to-home
• quantity: 1
• sold #: 18
• availability: in stock
• started: april 13, 2025

seller differentialsdepo:

• city: mesa, arizona
• # reviews: 1189
• rating: 100.0%

payments differentialsdepo:

• credit card: discover
• wallet: google-pay
• other

general differentialsdepo:

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

returns differentialsdepo:

• policy: no returns