SPEEDMASTER Outlet Gm Shaft Mount Rocker Arms 840136524632 1.7

( Brand: Speedmaster ), ( Type: 261 Rocker Arm ), ( UPC: 840136524632 )

Review SPEEDMASTER Outlet Chevy Gm Shaft Mount 1.7 Ratio Super Aluminum Rocker Arms fits STREET LS3

The Chevy GM LS3 Shaft Mount 1.7: Street Rocker Arms, part number 840136524632, are an essential upgrade for any performance enthusiast looking to enhance the power output and efficiency of their LS3 engine. These rocker arms are designed specifically for use with Chevrolet and GM applications, providing a perfect fit and reliable operation.

These rocker arms feature a shaft mount design, which allows for easy installation and alignment with the engine's shaft. The 1.7 ratio provides optimal valve control for high-performance applications, ensuring that the engine can breathe efficiently and effectively. The rocker arms are made from high-strength steel, ensuring durability and the ability to handle increased power loads.

The Chevy GM LS3 Shaft Mount 1.7: Street Rocker Arms are also designed with a unique spherical bearing race, which allows for greater articulation and reduced friction. This results in smoother operation and reduced wear on the components, leading to longer engine life and improved performance.

The rocker arms are also finished with a durable and corrosion-resistant coating, protecting them from the elements and ensuring that they continue to perform at their best, even in the most demanding conditions. The precision machining and attention to detail ensure a perfect fit and easy installation, making these rocker arms an excellent choice for any LS3 engine upgrade.

Overall, the Chevy GM LS3 Shaft Mount 1.7: Street Rocker Arms, part number 840136524632, are a high-performance upgrade for any LS3 engine, providing improved power output, efficiency, and durability. These rocker arms are designed to provide optimal valve control, reduced friction, and easy installation, making them an essential addition for any serious performance enthusiast.

Pros and Cons of Buying Chevy LS3 Shaft Mount Rocker Arms (Speedmaster Outlet Part Number 840136524632)

The Chevy LS3 engine is known for its power and performance. Upgrading its components can enhance its capabilities further. One such upgrade is the replacement of stock rocker arms with shaft mount rocker arms. In this article, we will discuss the pros and cons of buying Speedmaster Outlet's part number 840136524632 LS3 shaft mount 1.7:1 street rocker arms.

1. Improved Air-Fuel Mixture: Shaft mount rocker arms provide better valvetrain geometry, allowing for a more efficient intake and exhaust cycle. This leads to improved combustion and better power output.

2. Increased RPM Capability: Shaft mount rocker arms can handle higher RPMs than stock rocker arms, making them ideal for high-performance applications.

3. Enhanced Durability: The shaft mount design reduces the stress on the pushrods and lifters, allowing for increased durability and longevity.

4. Quicker Valve Response: Shaft mount rocker arms offer quicker valve response, resulting in smoother engine operation and better overall performance.

1. Cost: Shaft mount rocker arms are more expensive than stock rocker arms. The Speedmaster Outlet part number 840136524632, for instance, is pricier than the stock Chevy LS3 rocker arms.

2. Complex Installation: Installing shaft mount rocker arms requires more time and effort than a standard rocker arm swap. It may involve modifications to the engine, such as drilling and tapping the cylinder heads.

3. Potential Clearance Issues: Depending on the specific engine and intake setup, clearance issues may arise when installing shaft mount rocker arms. Careful attention must be paid to ensure proper clearance between the rocker arms and intake components.

The Speedmaster Outlet 840136524632 LS3 shaft mount 1.7:1 street rocker arms offer several advantages, including improved power output, increased RPM capability, enhanced durability, and quicker valve response. However, they come with a higher cost, a more complex installation process, and potential clearance issues. Ultimately, the decision to purchase these rocker arms depends on the individual's performance goals, budget, and technical capabilities.

If you are looking for improved performance, increased power output, and durability for your Chevy LS3 engine, then upgrading to shaft mount rocker arms like the Speedmaster Outlet part number 840136524632 is a worthwhile investment. However, ensure that you have the necessary skills, tools, and resources to handle the installation process and address any potential clearance issues. If you're unsure, consider consulting a professional mechanic or engine builder for guidance.

Details:

Chevy GM LS3 Shaft Mount 1.7 Ratio Super Street Aluminum Rocker Arms. For a full information, please see the original listing, Item condition: Used, Cosmetic Status: Heavy Wear and Tear, Packaging Original Packaging, Components All Included, Inspector Notes: Unit previously installed, overall good working unit.

specifications rockeareng:

• for models: Ls3, Street
• for makes: Chevy
• brand: Speedmaster
• type: 261 Rocker Arm
• upc: 840136524632

general rockeareng:

• condition: Used
• Engines Engine Parts > Valvetrain Components > Rocker Arms Parts

payments rockeareng:

• wallet: Paypal
• credit card: Discover
• other

shipping rockeareng:

• class: Standard, Expedited
• type: Calculated
• transit: 3-7 Days
• service: FedEx Ground / FedEx Home Delivery, FedEx Express Saver
• carrier: FedEx
• cost: $51.74

returns rockeareng:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

offer rockeareng:

• options: Ship-to-home
• sold: 0
• started: June 3, 2026
• quantity: 1
• availability: In Stock

seller rockeareng:

• # reviews: 88241
• city: Rialto, California
• rating: 98.6%

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