After extensive research comparing manufacturer specifications, published flow bench data, and aggregated owner feedback from forums and review sites, we have evaluated the top cylinder head options for the Ford 351 Cleveland engine. Our analysis focuses on airflow potential, casting quality, valve train geometry, and real-world reliability to help you choose the right heads for your build. Below are our findings, ranked by overall performance and value.
| Photo | Product | Score | Buy |
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AFR 205 SBF 351C Aluminum Cylinder Heads Top Pick 205cc intake runner, 64cc combustion chamber, assembled with 2.08/1.60 valves |
9.2 | 🛒 Check Price |
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Edelbrock Performer RPM 351C Aluminum Cylinder Heads Best Value 170cc intake runner, 60cc combustion chamber, 2.02/1.60 valves |
8.8 | 🛒 Check Price |
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ProMaxx 351 Cleveland Aluminum Cylinder Heads Best Budget 185cc intake runner, 64cc chamber, 2.05/1.60 valves, assembled |
8.1 | 🛒 Check Price |
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BluePrint Engines BPE351C Aluminum Cylinder Heads Best for Street 185cc intake runner, 64cc chamber, 2.05/1.60 valves, assembled |
8.4 | 🛒 Check Price |
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Dart 351 Cleveland Aluminum Cylinder Heads Best for Race 225cc intake runner, 68cc chamber, 2.19/1.71 valves, CNC ported |
9.0 | 🛒 Check Price |
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Ford Performance M-6049-C351 351C Iron Cylinder Heads Best OEM Replacement Stock 2V design, 62cc chamber, 2.04/1.64 valves, cast iron |
7.8 | 🛒 Check Price |
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CHI 351 Cleveland Aluminum Cylinder Heads Best High-Flow 220cc intake runner, 70cc chamber, 2.19/1.71 valves, CNC ported |
8.7 | 🛒 Check Price |
1. AFR 205 SBF 351C Aluminum Cylinder Heads: Top Pick
In our evaluation, the AFR 205 heads consistently top the charts for airflow and power potential. Based on owner feedback and the spec sheets, these heads flow over 300 cfm out of the box, making them ideal for street/strip engines targeting 500+ horsepower. The 205cc intake runner is well-suited for 393 to 408 stroker combinations, and the 64cc chamber works with flat-top pistons for pump-gas-friendly compression ratios.
However, the high cost is a real limitation. If you are building a mild 351C with a stock cam and exhaust manifolds, these heads are overkill and will not realize their potential. We recommend them only for serious performance builds where every horsepower matters.
- Excellent out-of-the-box flow numbers exceeding 300 cfm on the intake side
- Precision CNC-machined combustion chambers for consistent quench and detonation resistance
- Includes high-quality valve springs, retainers, and seals for immediate installation
Pros: Superior airflow for high-horsepower builds; Bolt-on ready with no porting required for most applications; Strong reputation for durability and consistency
Cons: Premium price point may be prohibitive for budget builds
2. Edelbrock Performer RPM 351C Aluminum Cylinder Heads: Best Value
We researched the Edelbrock Performer RPM heads as a popular choice for street-driven 351Cs. The 170cc intake runner is a good match for stock displacement engines and moderate cams, providing responsive throttle and strong torque from idle to 6000 RPM. Owner feedback highlights their reliability and ease of installation, often requiring no modifications to the valvetrain.
The trade-off is that these heads will choke a high-RPM race engine. If your build includes a solid roller cam and plans for 7000+ RPM shifts, look elsewhere. For a daily driver or weekend cruiser, these are an excellent balance of cost and performance.
- Proven Performer RPM design balances low-end torque with top-end power
- As-cast runners reduce cost while still delivering strong flow
- Compatible with stock rocker arms and pushrods for easy swap
Pros: Excellent value for the performance gained; Works well with mild to moderate camshafts; Good low- and mid-range torque for street driving
Cons: Smaller runners limit peak horsepower above 6500 RPM
3. ProMaxx 351 Cleveland Aluminum Cylinder Heads: Best Budget
In our comparison, the ProMaxx heads offer a cost-effective upgrade for those on a tight budget. They flow significantly better than factory 2V castings and can support up to 450 horsepower with the right combination. Owner reviews note that they are a direct bolt-on for most 351C engines and come with decent springs for mild cams.
However, we found reports of inconsistent port finish and occasional casting flash that may require light porting. If you expect show-quality CNC work or need maximum flow for competition, these may disappoint. They are best suited for a budget street rebuild where cost savings are paramount.
- Affordable option without sacrificing basic flow improvements over stock
- CNC bowl blend improves airflow consistency
- Includes quality valve springs suitable for cams up to .600 lift
Pros: Budget-friendly price point for budget builds; Decent flow increase over stock 2V heads; Pre-assembled saves time and money
Cons: Casting quality can be inconsistent, requiring minor clean-up; Not ideal for high-performance race applications
4. BluePrint Engines BPE351C Aluminum Cylinder Heads: Best for Street
We evaluated the BluePrint Engines heads for their street-oriented design. They are assembled with stainless valves and quality springs, making them a reliable drop-in upgrade. Owner feedback emphasizes their smooth performance and compatibility with stock manifolds and accessories. The 185cc runner size is a good middle ground for mild to moderate builds.
The limitation is that they are not optimized for all-out racing. Enthusiasts seeking maximum airflow for a stroker motor may find them restrictive. For a dependable street car that sees occasional track time, these are a solid choice.
- Designed for reliable street performance with stock-like driveability
- Stainless steel valves and hardened seats for unleaded fuel
- Comes with a 1-year warranty for peace of mind
Pros: Good torque and response for daily driving; Durable construction with quality components; Warranty adds confidence
Cons: Flow numbers are not class-leading for race use
5. Dart 351 Cleveland Aluminum Cylinder Heads: Best for Race
Our research shows that Dart heads are a go-to for serious racers. The 225cc CNC runners flow over 340 cfm, supporting 700+ horsepower. The thick casting and premium materials provide durability under extreme stress. Owner feedback from racing circles confirms they hold up well with nitrous and superchargers.
The downside is that these heads are overkill for a street engine. They will kill low-end torque with a mild cam and require a high-stall converter and steep gears. We recommend them only for dedicated race cars or high-end street/strip builds with aggressive cams.
- CNC-ported runners deliver exceptional high-RPM airflow
- Thick deck and robust casting for high-boost or nitrous applications
- Straight spark plug angle allows for larger bore headers
Pros: Top-tier flow for extreme horsepower; Can handle forced induction and high cylinder pressures; Excellent build quality and consistency
Cons: High cost and need for large camshaft to utilize potential
6. Ford Performance M-6049-C351 351C Iron Cylinder Heads: Best OEM Replacement
We researched the Ford Performance iron heads for those restoring a 351C to original condition. They are exact reproductions of the factory 2V castings, making them ideal for concours or stock rebuilds. Owner feedback highlights their durability and ease of installation with original parts.
The performance limitations are significant. These heads flow much less than even budget aluminum heads, and the added weight hurts handling and acceleration. If you want more than stock power, skip these. They are best for purists who value originality over performance.
- Factory-correct replacement for restoration projects
- Durable cast iron construction resists cracking
- Direct bolt-on using stock rocker arms and intake
Pros: Authentic restoration appearance; Lower cost than aluminum options; Proven longevity
Cons: Poor flow compared to aluminum heads; Heavy weight adds over 50 lbs per head
7. CHI 351 Cleveland Aluminum Cylinder Heads: Best High-Flow
We evaluated CHI (Cleveland Heads International) as a premium option from Australia. Their 220cc heads are designed for large displacement 351C builds and flow exceptionally well. Owner feedback praises their ability to make power across a broad RPM range, thanks to optimized runner shapes. The CNC version offers even better flow for race applications.
The main drawback is availability and cost. These heads can be harder to source in the US and may come with higher shipping. If you have a high-horsepower build and are willing to pay for top-tier engineering, CHI is worth considering. For budget or mild builds, the premium may not be justified.
- As-cast and CNC options available for various budgets
- Excellent flow numbers with good velocity for mid-range torque
- Strong castings with thick walls for durability
Pros: High-flow design suitable for stroker engines; Good mid-range torque despite large runners; Australian-made quality with proven track record
Cons: Limited availability in North America; Higher price point than some competitors
Frequently Asked Questions
What are the key differences between 2V and 4V 351 Cleveland heads?
The 2V (two-valve) heads have smaller intake ports and valves, producing better low-end torque and fuel economy. The 4V (four-valve) heads have larger ports and valves for high-RPM power, but they require specific intake manifolds and often reduce low-end torque. Most aftermarket aluminum heads are based on 2V or 4V designs, so choose based on your camshaft and intended RPM range.
Can I use 351 Cleveland heads on a 302 or 351 Windsor engine?
No, 351 Cleveland heads have a different bolt pattern and water jacket layout than Windsor engines. They require a Cleveland-specific block or an adapter plate. However, some aftermarket heads are designed for both Cleveland and Windsor applications, but they are rare. Always verify compatibility before purchase.
Do I need to upgrade my valvetrain when installing new heads?
It depends on the heads. Many aftermarket heads come fully assembled with valve springs, retainers, and seals that match common camshaft profiles. However, if your cam lift exceeds the spring’s recommended max lift, you must upgrade springs. Also, consider pushrod length and rocker arm geometry, as different heads may require different pushrod lengths.
What is the best combustion chamber size for street use?
For a street 351C with flat-top pistons, a 64cc chamber typically yields around 10.5:1 compression, which is pump-gas friendly. Larger chambers (70cc) lower compression for boosted applications, while smaller chambers (58cc) increase compression for race gas. Match chamber size to your piston dish and desired compression ratio.
Are aluminum heads worth the extra cost over iron?
Aluminum heads offer weight savings (about 50 lbs total), better heat dissipation, and higher flow potential. They also allow higher compression without detonation due to better thermal conductivity. Iron heads are cheaper and more durable for street use but limit performance. For most performance builds, aluminum is worth the investment.
Our Verdict
After comparing specifications, owner feedback, and industry data, our top pick is the AFR 205 SBF 351C Aluminum Cylinder Heads for their exceptional flow and build quality, suited for high-performance builds. For the best value, the Edelbrock Performer RPM 351C heads offer a great balance of cost and street-friendly power. Choose based on your horsepower goals and budget.
