CHEVROLET 3860308 Po Rocker Arms Gm 65 69

( Manufacturer Part Number: 3860308 ), ( Part Type: Arm ), ( Vintage Part: Yes ), ( Country/region Of Manufacture: United States )

Review CHEVROLET 65 69 Hi Po Inch Casting Rocker Arms Gm fits CAMARO CHEVELLE CORVETTE NOVA 396 427

GM 3860308 Rocker Arms Kit - Fits 1965-1969 Chevrolet Camaro, Chevelle, Corvette, and Nova with 396 and 427 Big Block Engines

This GM 3860308 Rocker Arm Kit is designed to fit specific big block engines found in 1965-1969 Chevrolet Camaro, Chevelle, Corvette, and Nova models. More specifically, it is engineered to work seamlessly with engines that carry the 396 and 427 cubic inch displacements. This kit is an excellent choice for classic car enthusiasts and hot-rodders looking to restore or upgrade their vehicles' performance.

1. OEM-grade quality: This rocker arm kit from GM is engineered to meet the same high standards as the original parts. It ensures a perfect fit and optimal engine performance.

2. Durable Construction: Each rocker arm is made from forged steel, ensuring strength and durability. They are designed to withstand the rigors of high-performance driving.

3. Precision Engineered: The rocker arms are designed to provide consistent clearance to the valves for optimal engine performance. This ensures a smooth and consistent idle, as well as improved throttle response.

4. Easy Installation: This rocker arm kit comes with all necessary hardware for installation, including new bolts and bushings, ensuring a straightforward installation process.

5. Designed for Big Block Engines: The 3860308 rocker arm kit is specifically designed to work with the larger displacement engines found in these classic cars. This makes it an essential upgrade for any enthusiast looking to maximize the performance of their big block engine.

6. Improved Engine Response: The precision engineering and high-quality materials of this rocker arm kit result in improved engine response. This leads to better acceleration and smoother power delivery, making your classic car a more enjoyable driving experience.

7. Trusted Brand: GM is a trusted brand in the automotive industry, known for its high-quality parts and exceptional customer service. This rocker arm kit is no exception, ensuring that you're getting a reliable and effective solution for your classic car restoration or performance upgrade project.

If you're looking to restore or improve the performance of your 1965-1969 Chevrolet Camaro, Chevelle, Corvette, or Nova with a 396 or 427 big block engine, the GM 3860308 Rocker Arm Kit is an excellent choice. Its OEM-grade quality, durable construction, and easy installation make it a valuable investment for any classic car enthusiast or hot-rodding project. With improved engine response and consistent power delivery, this rocker arm kit will help you get the most out of your classic car's big block engine.

Pros and Cons of Buying GM 3860308 65-69 Camaro, Chevelle, Corvette, Nova 396, 427 PO Rocker Arms

The GM 3860308 rocker arms are a popular aftermarket upgrade for the 1965-1969 Camaro, Chevelle, Corvette, and Nova models with 396 and 427 engines. These heavy-duty rocker arms provide better valvetrain control and durability. In this article, we will discuss the pros and cons of investing in these rocker arms.

1. Enhanced Performance: The 3860308 rocker arms offer improved valvetrain control, leading to better engine performance. This results in increased horsepower and torque.

2. Durability: These rocker arms are designed to withstand high engine loads and pressures, making them more durable than the original parts.

3. Better Valve Sealing: The 3860308 rocker arms provide better valve sealing, which helps prevent oil leaks and reduces the risk of engine damage.

4. Increased Longevity: By upgrading to these heavy-duty rocker arms, you can extend the life of your engine and reduce the need for frequent repairs.

5. Improved Appearance: For those who value the aesthetic appeal, these rocker arms offer a more polished look under the hood.

1. Cost: The 3860308 rocker arms are more expensive than the stock parts. This may be a significant investment for some enthusiasts.

2. Installation Complexity: Installing these rocker arms can be a challenging process, requiring specialized tools and expertise.

3. Potential Clearance Issues: In some cases, these rocker arms may not fit perfectly in the engine bay, requiring modifications to clear other components.

4. Weight: The heavy-duty design of these rocker arms adds weight to the engine, which could impact fuel economy and overall performance.

The GM 3860308 65-69 Camaro, Chevelle, Corvette, and Nova 396, 427 PO rocker arms offer numerous benefits, including enhanced performance, durability, better valve sealing, increased longevity, and improved appearance. However, they also come with drawbacks such as cost, installation complexity, potential clearance issues, and added weight.

Based on the pros and cons, the decision to invest in these rocker arms ultimately depends on your priorities and budget. If you are an enthusiast seeking improved performance and durability, and you are willing to make the investment, then these rocker arms are a worthwhile upgrade. However, if you are on a tight budget or prefer a more straightforward installation, you may want to consider other alternatives.

If you decide to purchase the 3860308 rocker arms, we recommend seeking professional installation services to ensure proper fitment and performance. Additionally, consider purchasing a high-quality set of rocker arm shafts and locks to ensure a complete and effective upgrade.

Details:

The arms are in nice used condition with no abnormal wear or damage. These are very hard to find so don't miss out.C-4 Four original GM, 1965 - 1969 Chevelle Camaro Corvette Impala Nova all model's with the high performance solid lifter cam 396 and 427 engines, Z casting rocker arms. They will need a thorough cleaning before installing.

part #: 3860308 prices

• $75.00-$95.00

specifications rockeareng:

• for models: 396, 427, Camaro, Chevelle, Corvette, Nova
• for makes: Chevrolet
• mpn: 3860308
• part type: Arm
• vintage part: Yes
• country/region of manufacture: United States

shipping rockeareng:

• service: Economy
• cost: $15.00
• class: Economy
• type: Fixed
• transit: 4-7 Days

offer rockeareng:

• options: Ship-to-home
• quantity: 1
• started: August 2, 2025
• best offers: True
• sold: 0
• availability: In Stock

seller rockeareng:

• # reviews: 7867
• rating: 99.6%
• city: Merced, California

general rockeareng:

• Engines Engine Parts > Valvetrain Components > Rocker Arms Parts
• condition: New other see details

returns rockeareng:

• policy: Returns Accepted
• time: 14 Days
• paid by: Buyer

payments rockeareng:

• wallet: Apple-pay
• other
• credit card: Diners-club

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