fits make: Chevrolet.

( Manufacturer Part Number: 3987376 ), ( Part Type: Cylinder Head ), ( Surface Finish: Cast Iron ), ( Country/region Of Manufacture: United States )
The Chevrolet NOs Double Hump Cylinder Head 492 (3987376) is a high-performance upgrade for any enthusiast looking to enhance the power and efficiency of their Chevrolet engine. This cylinder head is specifically designed for the 492 cubic inch big block engine, offering a unique double hump design that allows for increased combustion chamber volume and improved airflow.
The double hump design of this cylinder head is a standout feature, providing an enhanced combustion chamber that can accommodate larger valves and increased fuel injection. This allows for more efficient combustion, resulting in increased horsepower and torque. The cylinder head is also equipped with 2.200-inch intake valves and 1.940-inch exhaust valves, which provide ample flow for high-performance operation.
The Chevrolet NOs Double Hump Cylinder Head 492 is made from high-quality aluminum alloy, ensuring durability and lightweight construction. It features a CNC-ported and polished intake and exhaust ports, which provide a smooth airflow path and reduce turbulence. The head also includes 1.650-inch intake and 1.650-inch exhaust valve reliefs, allowing for the use of aftermarket valve springs and retainers.
This cylinder head is compatible with Chevrolet big block engines from 1965 to 1974, offering a versatile upgrade option for a wide range of vehicles. It is easy to install, requiring only basic engine modification, and comes with all necessary hardware for a seamless installation. The Chevrolet NOs Double Hump Cylinder Head 492 is a must-have upgrade for any Chevrolet enthusiast looking to take their engine to the next level.
Pros of buying a 3987376 Chevrolet NOs double hump cylinder head 492:1. Increased horsepower and torque: The double hump design of the cylinder head allows for increased combustion chamber volume, which can lead to more powerful engine performance.
2. Improved airflow: The double hump design also allows for better airflow into the engine, which can help improve engine efficiency and performance.
3. Enhanced appearance: The NOs double hump cylinder head has a distinctive appearance that can give your engine a unique and aggressive look.
Cons of buying a 3987376 Chevrolet NOs double hump cylinder head 492:1. Cost: The NOs double hump cylinder head is a high-performance part, and as such, it can be quite expensive.
2. Compatibility: Not all engines are compatible with the NOs double hump cylinder head, so it's important to make sure it will fit your specific engine before making a purchase.
3. Installation: Installing the NOs double hump cylinder head can be a complex and time-consuming process, and it may require specialized tools and knowledge.
Conclusion: If you are looking to improve the power and performance of your Chevrolet engine, the NOs double hump cylinder head 492 can be a great option. However, it is a high-performance part that comes with a high price tag and requires careful consideration before making a purchase. Make sure to research the compatibility of the cylinder head with your specific engine, and consider whether the installation process is something you are comfortable with.
Recommendation: If you are considering buying a 3987376 Chevrolet NOs double hump cylinder head 492, we recommend doing your research and consulting with a knowledgeable automotive professional to ensure that it is the right fit for your engine and your needs. It's also a good idea to compare prices from multiple sources to ensure that you are getting the best deal.
They are in excellent condition. For sale is a pair of cast iron small block Chevy cylinder heads. They have never been assembled. Had them for many years and now have no use.