Ever wondered what makes a Small Block Chevy engine roar to life? A big part of that power comes from the cylinder heads! These metal marvels are like the lungs of your engine, breathing in air and fuel, and then pushing out exhaust. But choosing the right ones can feel like a puzzle with a million pieces.
Many car enthusiasts get stuck when they need to pick new heads for their beloved Chevy. There are so many brands, sizes, and features! It’s easy to feel overwhelmed, and picking the wrong ones can lead to less power, a rougher ride, or even costly mistakes. You want your engine to run its best, and the heads play a huge role in that.
This post is here to help! We’ll break down what makes Small Block Chevy heads tick. You’ll learn about the different types and what to look for so you can choose the perfect set for your needs. By the end, you’ll feel confident in your decision and ready to unlock more power from your engine.
Our Top 5 Small Block Chevy Heads Recommendations at a Glance
Top 5 Small Block Chevy Heads Detailed Reviews
1. Flotek Cylinder Head
Rating: 8.7/10
Looking to boost your Small Block Chevy’s performance? The Flotek Cylinder Head (102-505) is a fantastic choice. This assembled aluminum head comes ready to bolt on, bringing improved airflow and power to your engine. It features a 2.020-inch intake valve and a 1.600-inch exhaust valve. The 180 cc intake runners and 64 cc combustion chambers are designed for optimal performance, and the 1.460-inch springs handle the demands of a performance engine. Plus, it’s made right here in the United States, ensuring quality construction. Installation is straightforward, and this head is built to last.
What We Like:
- The aluminum construction makes it lightweight.
- It’s designed for better airflow, which means more power.
- The assembled design saves you time and effort.
- It’s proudly made in the USA.
- The valve sizes and port volumes are well-tuned for performance.
What Could Be Improved:
- For some builders, the 64 cc chamber might require a bit more compression tuning.
- While good for many applications, those seeking extreme race-level flow might look at larger options.
This Flotek Cylinder Head is a solid upgrade for your Small Block Chevy. It offers a great balance of performance and value for many engine builds.
2. Speedmaster PCE435.1005 Compatible with Chevy SBC 350 Straight Plug Solid FT Cylinder Head Top End Engine Combo Kit
Rating: 8.6/10
Unleash the power of your Chevy SBC 350 with the Speedmaster PCE435.1005 Cylinder Head Top End Engine Combo Kit. This kit combines old-school style with modern technology, delivering exciting performance for your engine. Speedmaster is all about creating cool parts that blend vintage looks with new ideas. Their team works hard to make their products and their methods innovative.
What We Like:
- This kit is “Track Proven,” meaning it’s built to last on the road, at the races, and for fun.
- Speedmaster focuses on making parts that are closer to perfect.
- It comes with a 12-month limited worldwide warranty for peace of mind.
- The unique design draws inspiration from both classic and new automotive trends.
What Could Be Improved:
- Specific details on the exact horsepower gains are not detailed in the product title.
- Installation complexity might vary depending on your existing engine setup and mechanical skill.
- The “solid FT cylinder head” aspect might require specific knowledge for optimal tuning.
This Speedmaster combo kit offers a compelling upgrade for your SBC 350. It promises durability and a unique aesthetic, backed by a solid warranty.
3. DNA Motoring CYLH-SBC-350 Aluminum Bare Cylinder Head Compatible with Chevy SBC 302/327/350/383/400
Rating: 8.9/10
Upgrade your classic Chevy engine with the DNA Motoring CYLH-SBC-350 Aluminum Bare Cylinder Head. This bare head is designed for Chevrolet SBC 302, 327, 350, 383, and 400 small-block engines made in 1986 and earlier. It’s made of high-grade aluminum, making it lighter than old iron heads. This means better performance and handling for your ride. The advanced port design helps air flow better, giving your engine more power.
What We Like:
- Made from strong, lightweight aluminum, it’s much lighter than iron heads.
- The 2.020″ intake and 1.600″ exhaust valves, along with the 200cc intake runners, boost airflow for more power.
- The 68cc combustion chambers help improve performance and keep the stock compression for older engines.
- It features bronze valve guides and hardened seats for durability.
- The 3-angle valve seat design enhances performance.
- The square intake and exhaust ports are designed for better air entry and exit.
What Could Be Improved:
- As a bare cylinder head, it requires the purchase of additional components like valves, springs, and rocker arms, adding to the overall cost and assembly time.
- It’s specifically for engines made in 1986 and earlier, so it won’t fit newer SBC models.
This cylinder head is a solid choice for anyone looking to boost the performance of their older Chevy small-block engine. It offers great features for the price, but be ready to source the extra parts needed to complete the build.
4. Flotek 101505 Aluminum Cylinder Head for Small Block Chevy
Rating: 8.5/10
If you’re looking to give your small block Chevy engine a serious boost, the Flotek 101505 Aluminum Cylinder Head is a fantastic option. This assembled cylinder head is built with performance in mind, featuring larger valves and a well-designed intake port to help your engine breathe better and make more power. Its aluminum construction also means it’s lighter than traditional iron heads, which can improve overall vehicle performance.
What We Like:
- The 2.020 inch intake and 1.600 inch exhaust valves are a good size for increasing airflow.
- The 180 cc intake runner volume is great for street performance and moderate racing applications.
- The 64 cc combustion chamber helps create a good compression ratio, leading to more power.
- Aluminum construction makes it lighter than cast iron heads.
- It comes fully assembled, saving you time and hassle.
What Could Be Improved:
- For extreme racing applications, some builders might prefer larger intake runner volumes.
- While good for many, those seeking maximum horsepower might want to research custom porting options.
The Flotek 101505 is a well-rounded cylinder head that offers significant performance gains for your small block Chevy. It’s an excellent upgrade for anyone wanting more power and better engine efficiency.
5. IMOOA One Pair Bare Angle Plug Cylinder Head For Chevy Small Block 283-400 Aluminum 205cc Intake Runner & 64cc Chamber
Rating: 8.5/10
Give your Chevy Small Block engine a serious power boost with the IMOOA One Pair Bare Angle Plug Cylinder Head. This head is crafted from strong aluminum and designed for engines from 283 to 400 cubic inches, made before 1986. It features an angle spark plug design for better ignition and improved performance. The large intake valves (2.020 inches) and exhaust valves (1.600 inches) let your engine breathe easier, while the 205cc intake runners and 64cc combustion chambers are tuned for maximum efficiency and power.
What We Like:
- Boosts engine performance and power.
- Built tough with aluminum, bronze valve guides, and iron valve seats.
- Works with many popular Chevy Small Block V8 engines.
- Angle spark plug design offers better ignition.
- Large valves and runners improve airflow.
What Could Be Improved:
- Only fits Chevy Small Block engines made up to 1986.
- Bare head requires additional components for installation.
This cylinder head is a solid upgrade for anyone looking to enhance their classic Chevy V8. It offers a good balance of performance and durability for many projects.
Your Guide to Small Block Chevy Heads
Upgrade Your Engine’s Power and Performance
Thinking about giving your Small Block Chevy engine a boost? Cylinder heads are a fantastic place to start. They’re like the lungs of your engine, controlling how much air and fuel get in and how quickly exhaust gases get out. Upgrading them can make a big difference in how your car runs.
1. Key Features to Look For
When you’re shopping for new heads, keep these important features in mind:
- Port Size: Bigger ports let more air and fuel into the engine. This can mean more power. Think of it like a bigger straw for your drink – more can go through faster.
- Combustion Chamber Size: This is the space where the magic happens – where the fuel and air ignite. A smaller chamber can give you more compression, which often means more power.
- Valve Size: Larger valves also help the engine breathe better. They let more air and fuel in and exhaust out.
- Bolt Pattern: Make sure the heads you choose match your engine block. Most Small Block Chevys use standard bolt patterns.
- Intake and Exhaust Port Shape: The shape of these openings can affect how well air and fuel flow. Some shapes are better for low-end power, while others are better for high-speed power.
2. Important Materials
Cylinder heads are usually made from one of two main materials:
- Aluminum: These heads are lighter than iron heads. This can help with your car’s overall weight, which can improve handling and speed. Aluminum also helps cool the engine better.
- Cast Iron: These are the original material for most Chevy engines. They are stronger and often cheaper than aluminum. However, they are heavier.
3. Factors That Improve or Reduce Quality
Several things affect the quality of cylinder heads:
- Manufacturing Precision: How accurately the heads are made matters. Good precision means better sealing and airflow.
- Porting and Polishing: Sometimes, the inside passages (ports) are smoothed out and shaped to improve airflow. This can greatly increase performance.
- Valve Job: This is how the valves sit in the head. A good valve job ensures a tight seal, which is crucial for power and efficiency.
- Material Quality: The quality of the aluminum or iron used can impact durability and performance.
4. User Experience and Use Cases
Who uses these heads and why?
- Street Performance: Many car owners upgrade their heads for better acceleration and a more powerful sound for their daily drivers or weekend cruisers.
- Racing: Racers often choose high-performance heads with large ports and valves to get every bit of power out of their engines for drag racing or track days.
- Restoration Projects: Some people might choose heads that look like original equipment for a classic car restoration.
- Budget Builds: Simpler, cast-iron heads can be a good option for those on a tighter budget who still want some improvement.
Choosing the right heads depends on what you want to do with your car. Do you want a little more pep for cruising, or are you aiming for serious horsepower on the track?
Frequently Asked Questions (FAQ)
Q: What is a Small Block Chevy?
A: A Small Block Chevy is a type of V8 engine made by Chevrolet. It’s known for being compact and powerful.
Q: Do I need new heads to get more power?
A: Cylinder heads are a major part of engine performance. Upgrading them is one of the best ways to get more power.
Q: How much does a set of Small Block Chevy heads cost?
A: Prices can range a lot, from a few hundred dollars for basic iron heads to over a thousand dollars for high-performance aluminum ones.
Q: Can I install these myself?
A: Installing cylinder heads takes some mechanical skill and the right tools. If you’re not comfortable with engine work, it’s best to have a professional do it.
Q: Will new heads affect my gas mileage?
A: Performance heads that let more air and fuel in can sometimes use more fuel. However, a well-tuned engine with better heads can sometimes be more efficient.
Q: What is “flow rate”?
A: Flow rate tells you how much air the cylinder head can move at different amounts of pressure. Higher flow rate usually means more power.
Q: What does “compression ratio” mean?
A: It’s how much the air and fuel mixture gets squeezed before it ignites. A higher compression ratio can make more power but might require higher octane fuel.
Q: Are aluminum heads always better than iron heads?
A: Not necessarily. Aluminum heads are lighter and cool better. Iron heads are stronger and often cheaper. The “better” choice depends on your goals and budget.
Q: What’s the difference between “out-of-the-box” heads and “port-matched” heads?
A: “Out-of-the-box” heads are ready to go. “Port-matched” heads have had their intake and exhaust ports carefully shaped and smoothed to work perfectly with your intake manifold and exhaust headers, giving you better performance.
Q: How do I know which heads are right for my engine?
A: Consider your engine’s size, what you use your car for (street driving, racing), and your budget. Reading reviews and talking to engine builders can help you make the best choice.
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.