Choosing the right aluminum cylinder head for a Chevrolet small-block 350 can unlock better airflow, improved combustion, and more horsepower. This guide highlights five high-quality aluminum SBC heads designed to fit 302/327/350/383/400 engines and related small-block platforms. Each option emphasizes 200cc intake runners, 64–68cc combustion chambers, and square ports to balance performance with stock compression where applicable. Read on to compare features, compatibility, and potential benefits across different builds.
| Product | Brand | Key Features | Compatibility |
|---|---|---|---|
| DNA Motoring CYLH-SBC-350 Aluminum Bare Cylinder Head | DNA Motoring | 200cc intake runner, 68cc chamber, square ports, straight spark plug angle | SBC 302/327/350/383/400 up to 1986 |
| Auto Dynasty Aluminum Bare Cylinder Head | Auto Dynasty | 200cc intake runner, 68cc chamber, square intake/exhaust ports, CNC precision | SBC 302/327/350/383/400 up to 1986 |
| VEVOR Aluminum Engine Cylinder Head Assembly | VEVOR | Industrial-grade aluminum, manganese bronze valve guides, hardened seats, CNC machined | Small-block Chevy SBC 327/350/383 (Corvette/Camaro/Z06) |
| Speedmaster PCE281.2010 SBC Head | Speedmaster | 205cc intake, 64cc chamber, straight hydraulic flat assembled head | Chevy SBC 350 |
| SBC 350 Bare Aluminum Head 200cc Intake | ND | 200cc intake, 64cc chamber, square ports, fits 302/327/350/383/400 | Chevy SBC 302/327/350/383/400 up to 1986 |
The selections above focus on aluminum heads with 200cc intake runners and combustion chambers designed to preserve or enhance compression for older small-block Chevy builds, while delivering improved airflow compared with stock castings. Each option presents a balance between price, manufacturing precision, and fitment for classic mid-80s and earlier SBC models. The buying considerations section later helps weigh these choices across performance goals, installation needs, and long-term reliability.
DNA Motoring CYLH-SBC-350 Aluminum Head
Product overview aligns with a 200cc intake runner and a 68cc combustion chamber, featuring square ports and a straight spark plug angle. This head is intended for small-block Chevrolet engines 302/327/350/383/400 made in 1986 or earlier. The design supports performance gains in engines that retain stock compression while seeking improved airflow and combustion efficiency. Compatibility with common performance upgrades makes this a straightforward option for street to light performance builds.
Auto Dynasty Aluminum Head for SBC
This head features a 200cc intake runner and a 68cc combustion chamber, with square intake and exhaust ports and CNC precision machining. The head is designed for SBC engines 302/327/350/383/400 up to 1986, offering improved airflow and sealing characteristics compared with many OEM castings. The combination of raised precision and optimized chamber volume aims to deliver smoother operation and reliable performance in traditional street/drag builds.
VEVOR Engine Cylinder Head Assembly
VEVOR offers a complete aluminum head assembly suitable for small-block Chevrolet engines such as SBC 327/350/383 (Corvette, Camaro, Z06). It emphasizes CNC precision machining for the combustion chamber, intake, and exhaust passages, with provisions for proper valve heights and sealing. The build uses premium aluminum alloy for better heat dissipation and durability, with manganese bronze valve guides and hardened valve seats to support long-term reliability in performance-oriented applications.
Speedmaster PCE281.2010 SBC Head
Speedmaster’s 281-series assembled head features a 205cc intake runner and a 64cc chamber with straight hydraulic flat valve geometry. This design is marketed as “Track Proven” for longevity across road, race, and recreation uses. While the listing emphasizes performance and reliability, it remains essential to verify compatibility with your specific intake manifold and accessory setup, particularly when pairing with other high-flow components.
ND SBC 350 Bare Aluminum Head
This head is designed for SBC engines up to 1986, providing a 200cc intake runner and 64cc combustion chamber. The 64cc chamber size is aimed at preserving stock compression on older builds while delivering improved breathing through square ports. The assembly materials and design focus on maintaining reliable valve seating and airflow, suitable for hot-rod, street, or mild-performance applications where weight savings and heat dissipation matter.
269 Motorsports SBC Valve Cover Stud Kit
While not a head itself, this valve cover stud kit complements aluminum SBC heads by providing secure, durable mounting hardware. It uses hardened 304 stainless steel for corrosion resistance and reliability in high-temperature engine environments. Proper hardware ensures valve covers seal consistently, reducing oil leaks and maintenance needs in performance builds.
Buying Guide: Key Purchase Considerations
When selecting aluminum heads for a Chevy 350, consider the following:
- Intake runner and chamber sizing: 200cc intake runners with 64–68cc chambers are common for preserving compression on pre-1987 SBC engines while delivering improved airflow. Choose based on your target compression ratio and fuel type.
- Port configuration and port matching: Square ports typically align with many factory manifolds and headers for older SBCs. Check port dimensions and match to your intake and exhaust components to avoid leaks or performance bottlenecks.
- Valve geometry and material: Hardened seats, bronze valve guides, and stainless valves improve durability under higher RPM and heat. CNC-machined components offer consistent seating and sealing, aiding reliability.
- Compatibility: Ensure the head is designed for SBC models up to 1986 and verify compatibility with your intake manifold, header, and valve-cover hardware. Some heads exclude Vortec-style manifolds or require specific gaskets.
- Track and usage intent: Some heads emphasize track performance, while others focus on street drivability and longevity. Align features with your build goals, whether drag racing, weekend cruising, or hot-rodding.
- Hardware and ancillary components: Valve covers, studs, and gaskets should be selected to match head design and the engine’s accessory layout. Proper hardware prevents leaks and valve train wear.
- Installation considerations: Aluminum heads are lighter than iron but require careful torque sequencing, gasket selection, and cooling strategies to prevent warping or warpage under heat cycling.
- Budget vs. performance: Prices vary with CNC precision, material quality, and whether the head is bare or assembled. Balance cost with intended output and reliability for your application.
Across the options above, you can expect improvements in airflow, throttle response, and potential peak power for classic SBC builds. Always verify compatibility with your existing block, cam, and intake system, and consider professional installation if you’re upgrading valve trains or performing a full cylinder-head swap.