Does your classic Chevy 350 engine feel a little… tired? Maybe it’s not as powerful as it used to be, or perhaps you’re dreaming of giving it a serious muscle car boost. If you’re nodding your head, then you’ve probably started looking into upgrading your engine’s heads. But wow, choosing the right heads for a Chevy 350 can feel like navigating a maze! There are so many types, sizes, and brands, and it’s easy to get overwhelmed and make a choice that doesn’t quite fit your needs.
Choosing the wrong heads can lead to wasted money, disappointing performance, and even engine problems down the road. You want your Chevy 350 to roar to life, not sputter! That’s where this guide comes in. We’re here to break down the world of Chevy 350 heads into simple, easy-to-understand pieces. You’ll learn what makes a good set of heads and how to pick the ones that will truly unlock your engine’s potential.
By the time you finish reading, you’ll feel confident in your knowledge and ready to select the perfect heads for your project. We’ll cover the important stuff like airflow, combustion chambers, and valve sizes, all explained in a way that makes sense. Let’s dive in and get your Chevy 350 breathing fire!
Our Top 5 Heads For A Chevy 350 Recommendations at a Glance
Top 5 Heads For A Chevy 350 Detailed Reviews
1. IMOOA One Pair Bare Angle Plug Cylinder Head For Chevy Small Block 283-400 Aluminum 205cc Intake Runner & 64cc Chamber
Rating: 8.9/10
Upgrade your Chevy small block engine with the IMOOA One Pair Bare Angle Plug Cylinder Heads. These heads are made from strong aluminum and are designed for engines from 283 up to 400 cubic inches made before 1986. They feature an angle spark plug design for better performance. The large valves and well-shaped runners help your engine breathe easier and make more power.
What We Like:
- Great Power Potential: The 2.020-inch intake and 1.600-inch exhaust valves, along with the 205cc intake runners, allow for better airflow, which can boost your engine’s horsepower.
- Durable Build: Made from high-quality aluminum, these heads are built to last. They also have tough bronze valve guides and strong ductile iron valve seats for extra durability.
- Wide Compatibility: These heads fit a good range of Chevy small block V8 engines (283, 302, 305, 327, 350, 383, and 400) made up to 1986, making them a versatile choice for many projects.
- Improved Spark Plug Angle: The angle spark plug design can help with more complete fuel burning, leading to better efficiency and performance.
What Could Be Improved:
- Bare Heads: These are “bare” heads, meaning they don’t come with valves, springs, or other components. You’ll need to buy these separately, which adds to the overall cost and complexity of installation.
- Older Engine Compatibility Only: They are designed for engines up to 1986. If you have a newer Chevy small block, these won’t be a direct fit.
These IMOOA cylinder heads offer a solid upgrade for your classic Chevy small block. They provide a good foundation for building a more powerful and reliable engine.
2. Speedmaster PCE435.1005 Compatible with Chevy SBC 350 Straight Plug Solid FT Cylinder Head Top End Engine Combo Kit
Rating: 8.6/10
Rev up your Chevy SBC 350 with the Speedmaster PCE435.1005 Straight Plug Solid FT Cylinder Head Top End Engine Combo Kit! This kit is designed to give your engine a powerful boost. Speedmaster is known for blending old and new tech to make cool parts. Their team works hard to invent new things. This kit is “Track Proven,” meaning it’s built to last on the road, the race track, or just for fun. They aim for near-perfect products. Plus, you get a 12-month limited worldwide warranty for peace of mind.
What We Like:
- Boosts engine performance for Chevy SBC 350.
- Combines classic and modern technology.
- Built for tough use (road, race, recreation).
- Comes with a 12-month warranty.
- Speedmaster focuses on innovation.
What Could Be Improved:
- Installation might require some mechanical skill.
- Specific compatibility details should be double-checked for your exact engine model.
This Speedmaster engine combo kit offers a fantastic upgrade for your SBC 350. It’s a solid choice for enthusiasts seeking enhanced performance and durability.
3. DNA Motoring CYLH-SBC-350 Aluminum Bare Cylinder Head Compatible with Chevy SBC 302/327/350/383/400
Rating: 8.7/10
This DNA Motoring CYLH-SBC-350 Aluminum Bare Cylinder Head is a fantastic upgrade for your classic Chevy small-block engine. If you’re looking to boost your engine’s power and performance, this bare aluminum cylinder head is designed to do just that. It fits many popular SBC engines from 1986 and earlier, offering a significant improvement over older cast iron heads.
What We Like:
- It’s made of high-grade aluminum, making it much lighter than iron heads. This can help your engine rev faster.
- The advanced port design helps more air flow into your engine, leading to better performance.
- It features bronze valve guides and hardened seats for durability.
- The 68cc combustion chambers are designed to improve performance and keep the stock compression ratio for engines made in 1970 and earlier.
- The 2.020″ intake valves and 1.600″ exhaust valves are a good size for increased airflow.
- It has a straight spark plug angle, which is a common and easy-to-work-with design.
What Could Be Improved:
- This is a “bare” head, meaning it doesn’t come with valves, springs, or other components. You’ll need to buy those separately.
- The square intake and exhaust ports might require some port matching to your intake and exhaust manifolds for the best results.
- It’s designed for engines made in 1986 and earlier. If your engine is newer, it might not be compatible without modifications.
Overall, the DNA Motoring CYLH-SBC-350 is a strong option for enthusiasts wanting to upgrade their classic Chevy engine’s breathing capabilities for more power.
4. Flotek 101505 Aluminum Cylinder Head for Small Block Chevy
Rating: 9.1/10
The Flotek 101505 Aluminum Cylinder Head is a fantastic upgrade for your Small Block Chevy engine. It’s built with strong aluminum for better performance and is ready to bolt on. This head is designed to help your engine breathe easier, giving you more power and a smoother ride.
What We Like:
- It’s made from tough aluminum, making it lighter than iron heads.
- The large valves (2.020 inch intake and 1.600 inch exhaust) help your engine get more air and fuel.
- The 180cc intake runners are a good size for many street performance applications.
- The 64cc combustion chambers help create a good compression ratio for more power.
- It comes fully assembled and ready to install, saving you time and effort.
What Could Be Improved:
- While great for many, serious racers might want even larger intake runners for extreme power builds.
- For some, the price might be a stretch for a budget build.
This Flotek cylinder head is a solid choice for anyone looking to boost their Small Block Chevy’s performance. It offers a great balance of features and value for street-driven vehicles.
5. Speedmaster PCE281.2010 Compatible with Chevy SBC 350 205cc 64cc Straight Hydraulic Flat Assembled Cylinder Heads
Rating: 8.7/10
Ready to give your Chevy SBC 350 engine a serious upgrade? The Speedmaster PCE281.2010 Assembled Cylinder Heads are built for performance. These heads combine old-school charm with modern engineering to make your engine run better. Speedmaster is known for creating cool parts that blend classic and new ideas. Their team works hard to invent new things, not just in what they sell, but in how they do it. These heads are made to handle tough conditions, whether you’re on the road, the track, or just having fun.
What We Like:
- Track Proven Durability: These heads are built tough and have been tested to last through hard use on the road and the race track.
- Innovative Design: Speedmaster mixes old and new technology to create unique and high-performing parts.
- Ready to Go: They come fully assembled, saving you time and effort.
- Peace of Mind: A 12-month limited worldwide warranty is included, so you can buy with confidence.
What Could Be Improved:
- Specific Application: These heads are designed for Chevy SBC 350 engines, so they won’t fit other types of engines.
- Technical Details: While the performance benefits are clear, understanding the exact engineering behind the “unique DNA” might require further research for some users.
If you’re looking to boost the power and reliability of your Chevy SBC 350, these Speedmaster cylinder heads are a fantastic option. They offer proven performance and innovative design to help you get the most out of your engine.
Unlocking Power: Your Guide to Chevy 350 Heads
So, you’re looking to give your Chevy 350 engine a boost? Replacing or upgrading your cylinder heads is a fantastic way to do it! Cylinder heads are like the lungs of your engine, controlling how air and fuel get in and how exhaust gets out. This guide will help you pick the best heads for your needs.
Key Features to Look For
When you’re shopping for Chevy 350 heads, keep these important features in mind:
- Valve Size: Bigger valves let more air and fuel into your engine. This can mean more power. For most street cars, standard sizes are good. If you want serious performance, look for larger valves.
- Combustion Chamber Size: This is the space where the air and fuel mix and ignite. A smaller chamber can increase compression, giving you more power. A larger chamber can lower compression, which is better for some engines or if you use lower octane fuel.
- Port Design: The intake and exhaust ports are the pathways for air and exhaust. Smooth, well-designed ports help air flow better. This means your engine breathes easier and makes more power.
- Bolt Pattern: Make sure the bolt pattern matches your intake manifold. Most Chevy 350 heads use a standard pattern.
- Accessory Bolt Holes: Some heads have extra holes for mounting accessories like power steering pumps or alternators. Check if you need these.
Important Materials
The material of your cylinder heads matters a lot.
- Cast Iron: This is the traditional material. It’s strong and affordable. Cast iron heads are heavy. They handle heat well. Many stock Chevy 350 engines come with cast iron heads.
- Aluminum: These heads are much lighter than cast iron. This can improve your car’s handling. Aluminum also transfers heat better, which can help prevent overheating. They often offer better performance potential. However, aluminum heads usually cost more.
Factors That Improve or Reduce Quality
Several things affect the quality of cylinder heads.
- Manufacturing Precision: How accurately the heads are made is crucial. Good machining ensures a perfect seal and optimal airflow. Poorly made heads can leak or not perform as well.
- Porting and Polishing: Some aftermarket heads come with ports that are already smoothed and shaped for better airflow. This is a sign of higher quality.
- Valve Seats and Guides: The material and fit of valve seats and guides are important for durability and sealing. High-quality components last longer.
- Brand Reputation: Stick with well-known brands. Companies with a good track record usually produce reliable, high-quality parts.
- Design for Purpose: Heads are designed for different uses. A head designed for towing will have different features than one made for drag racing. Choosing the right design for your needs is key.
User Experience and Use Cases
How you plan to use your Chevy 350 will determine the best heads for you.
- Daily Driver: For a car you drive every day, you want a balance of performance and reliability. Heads with good airflow and a standard combustion chamber size are usually a great choice. They won’t sacrifice fuel economy too much.
- Weekend Cruiser/Show Car: If your car is more for fun and showing off, you might want heads that offer a noticeable power increase. Larger valves and a slightly smaller combustion chamber can give you that extra punch.
- Racing/Performance Enthusiast: For serious performance, you’ll want heads with aggressive port designs, larger valves, and a combustion chamber size that maximizes compression for your fuel. Aluminum heads are often preferred here for weight savings and heat dissipation.
- Towing/Hauling: If your 350 powers a truck or vehicle used for towing, you’ll want heads that provide good low-end torque. This means a design that promotes strong airflow at lower engine speeds.
By considering these features, materials, quality factors, and your intended use, you can find the perfect heads to make your Chevy 350 roar!
Frequently Asked Questions about Chevy 350 Heads
Q: What is the most important feature to consider?
A: The most important feature is how the heads are designed for the type of performance you want. Bigger valves and better port design usually mean more power.
Q: Are aluminum heads always better than cast iron?
A: Not always. Aluminum heads are lighter and can offer better performance, but they cost more. Cast iron heads are cheaper and very durable.
Q: How does combustion chamber size affect my engine?
A: A smaller combustion chamber increases compression. This can give you more power but might require higher octane fuel. A larger chamber lowers compression.
Q: What does “porting and polishing” mean for cylinder heads?
A: It means smoothing and shaping the inside passages (ports) where air and fuel go. This helps the engine breathe better and makes more power.
Q: Can I use any intake manifold with any Chevy 350 heads?
A: Usually, yes, but always check the bolt pattern. Most aftermarket heads use a standard pattern, but it’s good to be sure.
Q: How do I know what size valves I need?
A: For a street-driven car, stock or slightly larger valves are usually fine. For racing, you might need much larger valves to get more air in.
Q: Will upgrading my heads improve my gas mileage?
A: Sometimes, better airflow can make the engine more efficient, which might slightly improve mileage. However, if you use the extra power, your mileage could decrease.
Q: What are “as-cast” heads?
A: These are heads that are cast into their shape. They are usually less expensive. Aftermarket heads often have improved port designs beyond the basic casting.
Q: How much do Chevy 350 heads typically cost?
A: Prices vary a lot. Basic cast iron heads might be a few hundred dollars. High-performance aluminum heads can cost over a thousand dollars.
Q: Can I install new heads myself?
A: It’s a moderately difficult job. If you have good mechanical skills and the right tools, you can do it. Otherwise, it’s best to have a professional mechanic do the installation.
In conclusion, every product has unique features and benefits. We hope this review helps you decide if it meets your needs. An informed choice ensures the best experience.
If you have any questions or feedback, please share them in the comments. Your input helps everyone. Thank you for reading.
I’m the recipe developer and food photographer behind Air Fryer at Tiffany’s. I’m also a wife, mom to two adventurous little boys, registered nurse, and live in the great Midwest. Join me as I show you new ways to use your air fryer that you never knew possible.