The Best Heads for a 350 SBC, Tested

If you’re looking to boost the performance of your 350 small block Chevy (SBC), selecting the right cylinder head is crucial. The heads directly influence airflow, combustion efficiency, and ultimately, your engine’s power output.

This guide reviews some of the best heads available on Amazon, highlighting their features, benefits, and suitability for different applications. Whether you’re restoring a classic, building a high-performance street machine, or upgrading for durability, you’ll find valuable insights here.

Speedmaster PCE281.2009 Aluminum Cylinder Heads – Power-Boosting Performance

The Speedmaster PCE281.2009 heads are designed specifically for small block Chevy 350 engines, making them an excellent choice for those seeking a straightforward upgrade. These heads come assembled, saving you time and ensuring proper setup from the start.

With a 64cc combustion chamber and 205cc intake runners, these heads are optimized for horsepower and torque gains. The aluminum construction helps reduce weight, making your engine more responsive and easier to handle, especially in performance applications. Their hydraulic roller cam compatibility ensures smooth operation and increased durability.

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• Small Block Chevy 350 w/Hydraulic Roller Cam
• Assembled Head
• 64cc Combustion Chamber
• 205cc Intake Runner
• Angle Plug

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VEVOR Engine Cylinder Head Assembly – Precision and Durability

The VEVOR cylinder head assembly is a fully assembled replacement option, crafted from high-quality aluminum alloy. Designed to fit Chevy SBC 327/350/383 engines, it aims to improve airflow and engine smoothness significantly.

Thanks to CNC-machined combustion chambers and passages, airflow is smoother, which can translate into better throttle response and power. The inclusion of manganese bronze valve guides and hardened seats enhances longevity and sustained performance, making it suitable for both daily driving and performance upgrades.

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• Perfect Fit: Replaces the original cylinder head assembly to resolve failure and damage issues. As a cylinder head for small block Chevrolet engines, it fits the following models: SBC 327/350/383 Corvette, Camaro, Z06. You will experience unprecedented smoothness in engine operation.
• Precise Manufacturing: Utilizes CNC precision machining for the combustion chamber, intake, and exhaust passages. Compared to standard casting, this cylinder head provides smoother airflow and high precision with excellent sealing. Ensures that all components (such as valves, threaded holes, etc.) are correctly positioned, sized, and angled, avoiding issues such as improper valve heights. Passed sealing tests to ensure correct installation and operation.
• Long Service Life: The cylinder head assembly is crafted from premium materials to extend its lifespan. Made with industrial-grade aluminum alloy, it offers excellent impact resistance, wear resistance, and rapid heat dissipation to prevent overheating. We also include manganese bronze valve guides and hardened valve seats to maintain engine performance stability. Upgrade from disappointing old cylinder heads with our reliable option.
• Fully Assembled: The cylinder head assembly comes fully assembled with all necessary components, including valve spring seats, inner springs, outer springs, valve locks, valve seals, valve seats, intake valves, and exhaust valves. This reduces the likelihood of installation errors and ensures ease of use. It is carefully packaged and ready to be delivered to you. Please keep the installation environment clean and have a professional perform the installation.
• Efficient Solution for Common Issues: If your vehicle experiences abnormal vibrations, severe oil leaks, aging or deformation, or excessive spark plug oil deposits, consider replacing it with this high-quality engine cylinder head. It will enhance horsepower, improve fuel efficiency, and reduce emissions.

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DNA MOTORING Aluminum Bare Cylinder Head – Versatile and High-Flow

Designed for a range of small-block Chevy engines from 302 to 400 cubic inches, the DNA MOTORING heads are an excellent choice for custom builds and performance upgrades. Made from high-grade aluminum, they are lighter than traditional iron heads, reducing overall engine weight.

The 200cc intake ports and 68cc chambers are engineered for improved airflow, while the 3-angle valve seat enhances fuel atomization and combustion efficiency. Compatibility with both stock and performance parts makes these heads versatile for various builds.

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• 【Fitment】Compatible with Chevy SBC 302, 327, 350, 383 and 400 small-block engines manufactured in 1986.
• 【Specifications】Intake Valve Diameter: 2.020" | Exhaust Valve Diameter: 1.600" | Intake Port Volume: 200cc | Combustion Chamber Volume: 68cc | Intake Port: Square | Exhaust Port: Square | Spark Plug Angle : Straight | 23 Degree Intake & Exhaust Valve Angles | 3-Angle Valve Seat
• 【High Quality】High grade aluminum, bronze valve guides, hardened seats, advance port design for greater air flow. Lighter than Iron Heads, each Head weighs 10.33 kg. Dual pattern valve covers will accept either center bolt or perimeter bolt valve covers.
• 【High Performance】This head is 200cc intake runner with a 68cc combustion chamber, 68cc combustion chambers improve performance and retains stock compression on 1970 and earlier. This head has a thick deck design so they can be used on nitrous, turbocharged and supercharged applications.
• 【Note】This cylinder head does not have 400 stem holes. May require drilling if necessary. With pre-drilled accessory bolt holes. Valves, springs, retainers, hardware not included.

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Auto Dynasty Aluminum Bare Cylinder Head – Budget-Friendly Power

The Auto Dynasty heads are designed to improve performance without breaking the bank. These heads are compatible with SBC engines up to 1986, featuring a 200cc intake runner and 68cc chamber that promote efficient airflow and power gains.

Being lightweight at just over 10 kg per head, they reduce engine stress and improve handling. Their square ports and 3-angle valve seats contribute to better fuel combustion, making them suitable for street performance and mild racing applications.

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• Vehicle Compatibility – Cylinder Head Compatible with SBC engines 302/327/350/383/400 small block chevy engines up to 1986. Not compatible with Vortec style intake manifolds
• High-Performance – Featuring a 200cc intake runner, this cylinder head enhances power while retaining stock compression for 1970 and earlier models
• Optimized Combustion – With a 68cc combustion chamber and square intake and exhaust ports, this design ensures efficient airflow and optimal performance
• Lightweight Design – Lighter than iron heads, each head weighs just 10.33kg. Featuring a 3-angle valve seat and a straight spark plug angle, this design ensures superior performance and efficiency
• Product Specifics – Intake Valve Diameter: 2.020inch | Exhaust Valve Diameter: 1.600inch | Intake Port Volume: 200cc | Combustion Chamber Volume: 68cc | Intake Port: Square | Exhaust Port: Square | Spark Plug Angle : Straight

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IMOOA Angle Plug Cylinder Head – Classic Design Meets Performance

The IMOOA heads feature an angled spark plug design, offering a classic aesthetic combined with modern performance features. Compatible with Chevy small block engines up to 1986, these heads have a 64cc combustion chamber and 205cc intake runners for improved airflow.

Their aluminum construction ensures weight savings, and the precise valve sizes support a range of performance modifications. This makes them ideal for rebuilds, restorations, or mild performance upgrades.

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• Compatible with Chevy Small Block 283, 302, 305, 327, 350, 383, and 400 V8 engines up to 1986.
• Features an angle spark plug style.
• The intake valve diameter measures 2.020 inches, and the exhaust valve diameter is 1.600 inches.
• The combustion chamber volume is 64cc, while the intake runner volume is 205cc.
• Constructed from high-grade aluminum with bronze valve guides and ductile iron valve seats for durability.

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Buyer’s Guide: What to Consider

Choosing the right cylinder head for your 350 SBC depends on your specific goals, budget, and build complexity. The right balance between airflow, weight, and compatibility ensures your engine performs at its best.

This section highlights key factors to consider, helping you make an informed decision tailored to your needs.

• Material Composition: Aluminum heads are lighter and dissipate heat better than cast iron, leading to improved performance and durability. Ensure the material matches your build's needs.
• Flow Characteristics: Look for heads with optimized port design and valve seat angles, such as 3-angle seats or high-flow ports, to maximize airflow and combustion efficiency.
• Compatibility: Verify that the heads fit your engine's specifications, including bore size, valve size, and compatibility with your intake manifold and other components.
• Intake and Exhaust Port Size: Larger ports improve airflow for high-performance builds but may require additional modifications. Balance port size with your intended use.
• Chamber Size: The combustion chamber volume influences compression ratio and power. Smaller chambers increase compression but may require higher octane fuel.
• Finish and Coatings: Heads with corrosion-resistant coatings or anodized finishes provide longevity and maintain performance over time.
• Ease of Installation: Consider whether the heads come assembled or require setup. Fully assembled heads save time and reduce installation errors for amateurs.

Conclusion

Upgrading your 350 SBC with the right cylinder heads can significantly enhance engine performance, responsiveness, and efficiency. Each of the reviewed options offers unique benefits suited to different applications, from budget-friendly rebuilds to high-performance street machines.

By considering factors like material, airflow, compatibility, and ease of installation, you can select a set of heads that best complements your engine build and performance aspirations. Investing in quality heads ensures that your engine will deliver reliable power and durability for years to come.