Upgrading to aluminum cylinder heads is one of the most effective ways to unlock performance from a small block Chevy. They reduce weight, improve airflow, and allow higher compression ratios. We researched manufacturer specifications, industry standards, and aggregated owner feedback to compare the top options on the market. This guide covers seven real products available on Amazon, evaluated for performance, durability, value, ease of installation, and safety. Whether you’re building a street cruiser or a track monster, our analysis will help you choose the right set for your build.
| Photo | Product | Score | Buy |
|---|---|---|---|
|
🚗
|
AFR 195cc Eliminator CNC Cylinder Heads Best Overall 195cc intake runner, 64cc combustion chamber, CNC ported |
9.2 | 🛒 Check Price |
|
🚗
|
Edelbrock E-Street 60899 Cylinder Heads Best Value 170cc intake runner, 64cc combustion chamber, as-cast finish |
8.7 | 🛒 Check Price |
|
🚗
|
Brodix IK 180 Cylinder Heads Best for High RPM 180cc intake runner, 64cc combustion chamber, CNC ported |
8.4 | 🛒 Check Price |
|
🚗
|
ProMaxx 200cc Aluminum Cylinder Heads Best for Big Blocks 200cc intake runner, 64cc combustion chamber, CNC ported |
8.1 | 🛒 Check Price |
|
🚗
|
Speedmaster 170cc Aluminum Cylinder Heads Budget Pick 170cc intake runner, 64cc combustion chamber, as-cast |
7.8 | 🛒 Check Price |
|
🚗
|
Dart SHP 180cc Cylinder Heads Best for Street/Strip 180cc intake runner, 64cc combustion chamber, as-cast with CNC chambers |
8.3 | 🛒 Check Price |
|
🚗
|
World Products S/R Torquer 487P1 Cylinder Heads Best for Torque 170cc intake runner, 76cc combustion chamber, as-cast |
7.3 | 🛒 Check Price |
1. AFR 195cc Eliminator CNC Cylinder Heads: Best Overall
In our evaluation, the AFR 195cc Eliminator heads stand out for their precision CNC porting and consistent quality. They deliver strong low- and mid-range torque, making them ideal for 350-383 stroker engines. Owner feedback highlights easy installation on most small block Chevys with standard intake and exhaust bolt patterns. The 64cc chambers allow compression ratios around 10.5:1 with flat-top pistons, suitable for pump gas.
However, these heads are not the best choice for extreme high-rpm racing or engines over 400 cubic inches, where larger runners would be better. The price is premium, so budget-conscious builders may need to consider alternatives. If you want a proven performer for a street-driven performance car, these are worth the investment.
- CNC-ported intake and exhaust for superior airflow out of the box
- Straight spark plug angles fit most headers and manifolds
- Bronze valve guides and hardened exhaust seats for longevity
Pros: Excellent flow numbers for mild to moderate street/strip builds; Bolt-on design with minimal modifications required
Cons: Higher price point compared to budget options
2. Edelbrock E-Street 60899 Cylinder Heads: Best Value
We compared the Edelbrock E-Street 60899 heads as a solid entry-level option. They feature 170cc intake runners that support good low-end torque for street-driven 350s. Owner feedback indicates they bolt on easily with no interference issues. The included springs handle cams up to 0.480″ lift, which covers many mild performance cams. For the price, these heads offer reliable performance gains over stock cast-iron heads.
However, serious enthusiasts may find the as-cast port finish limits peak horsepower potential. For high-rpm or forced induction builds, porting is recommended. If you’re restoring a classic truck or building a daily driver on a budget, these heads deliver solid results without breaking the bank.
- Affordable price point without sacrificing quality
- Straight spark plug location for easy header fitment
- Includes stainless steel valves and valve springs for mild cams
Pros: Great value for budget builds; Works well with stock intake manifolds and valve covers
Cons: As-cast ports may need cleanup for max performance
3. Brodix IK 180 Cylinder Heads: Best for High RPM
Based on owner feedback and spec sheets, the Brodix IK 180 heads are engineered for serious performance. The 180cc intake runners are optimized for high-rpm power, making them a favorite among racers. We found that the CNC porting is consistent, and the heavy-duty springs support lift up to 0.600″ without issue. These heads are built to withstand the rigors of competition.
However, installation can be more involved. The raised runner design may not clear stock intake manifolds, and header fitment can be tight. For a pure street car, these heads might be overkill and less user-friendly. If you’re building a high-revving race engine and don’t mind extra work, the Brodix IK 180 delivers exceptional performance.
- CNC-ported runners for excellent high-rpm airflow
- Heavy-duty valve springs handle aggressive cams
- Renowned for durability in racing applications
Pros: Top-tier flow for high-horsepower builds; Proven in circle track and drag racing
Cons: May require aftermarket intake and header modifications
4. ProMaxx 200cc Aluminum Cylinder Heads: Best for Big Blocks
We evaluated the ProMaxx 200cc heads for builders targeting larger small blocks. The 200cc intake runners support high airflow demands of stroker engines. Owner feedback notes that the CNC porting is well-executed, and the included dual springs handle cams up to 0.600″ lift. These heads are a popular choice for 383 and 406 builds looking for affordable power.
However, the larger runners can sacrifice low-end torque on smaller 350 engines. Also, some users report that intake manifold bolt holes may need slight alignment. If you have a stroker motor and want a budget-friendly option with strong top-end power, these are a solid pick.
- Large 200cc runners for 383-400+ cubic inch engines
- CNC-ported combustion chambers for consistent quench
- Stainless steel valves and dual valve springs included
Pros: Excellent airflow for larger displacement builds; Good value for the features offered
Cons: May require specific intake manifold for optimal fit
5. Speedmaster 170cc Aluminum Cylinder Heads: Budget Pick
In our comparison, the Speedmaster 170cc heads are the most affordable option. They are a direct bolt-on replacement for stock heads and come with all necessary hardware. Owner feedback indicates they provide a noticeable performance increase over stock cast-iron heads, especially in low-end torque. For a tight budget build, these heads get the job done.
However, we found that the as-cast ports can have rough spots that may hinder peak power. Quality control is less consistent than premium brands, so inspection before installation is recommended. If you’re on a strict budget and willing to do some cleanup, these heads offer great bang for the buck.
- Lowest price among aluminum heads for SBC
- Includes valves, springs, and retainers
- Straight spark plug location for easy header fit
Pros: Extremely budget-friendly; Lightweight and easy to install
Cons: As-cast finish may have casting flash
6. Dart SHP 180cc Cylinder Heads: Best for Street/Strip
We researched the Dart SHP 180cc heads as a versatile choice. They feature CNC-machined combustion chambers for precise quench and compression control. Owner feedback praises their ability to support both mild street cams and aggressive strip setups. The 180cc runner size is a good compromise for engines from 350 to 383 cubic inches. These heads are a popular upgrade for weekend warriors.
However, the as-cast intake runners may not match the flow of fully CNC-ported heads. For extreme high-horsepower builds, porting is recommended. If you want a reliable set of heads that perform well in a variety of applications without breaking the bank, the Dart SHP is a strong contender.
- CNC-machined combustion chambers for consistent volume
- 180cc runners balance low and high RPM power
- Heavy-duty ductile iron valve seats
Pros: Versatile performance for street and strip; Strong build quality from a reputable brand
Cons: Price is mid-range, not the cheapest
7. World Products S/R Torquer 487P1 Cylinder Heads: Best for Torque
We evaluated the World Products S/R Torquer heads for their torque-focused design. The 76cc combustion chambers are ideal for builds using flat-top pistons where you want to keep compression manageable. Owner feedback from truck owners reports improved towing and low-end grunt. These heads are a practical upgrade for work vehicles and daily drivers.
However, the large chambers and as-cast ports restrict high-rpm power. For performance enthusiasts seeking horsepower, these heads are not the best choice. Also, quality control has been inconsistent in some batches. If you’re building a low-compression engine for torque and reliability, these are a functional option.
- 76cc chambers for lower compression on budget builds
- Designed for low-end torque in trucks and heavy vehicles
- Includes stainless steel valves and valve springs
Pros: Good torque improvement over stock; Works with low-compression pistons
Cons: Large chambers limit high-performance potential
Frequently Asked Questions
What size aluminum heads should I choose for my small block Chevy?
The ideal intake runner size depends on your engine displacement, intended use, and rpm range. For street-driven 350s, 170-180cc runners are common. For 383-406 stroker engines, 195-200cc runners help support higher airflow. Larger runners can hurt low-end torque on smaller engines. We recommend matching the head to your camshaft and compression ratio for best results.
Can I install aluminum heads on a stock small block Chevy?
Yes, most aftermarket aluminum heads are designed as direct bolt-on replacements for factory small block Chevys. They use the same intake and exhaust bolt patterns. However, you may need to check valve clearance with your pistons, especially if using high-lift cams. Also, aluminum heads often require different spark plugs and may need minor adjustments for header fitment.
Do aluminum heads require any special maintenance?
Aluminum heads are generally low-maintenance, but they expand more than iron when heated. It’s important to retorque the head bolts after the first heat cycle according to the manufacturer’s instructions. Also, use anti-seize on spark plug threads to prevent galling in the aluminum. Otherwise, routine checks for leaks and proper coolant are sufficient.
Will aluminum heads increase my compression ratio?
Aluminum heads often have smaller combustion chambers (usually 64cc) compared to stock iron heads (typically 76cc or larger). This reduction in chamber volume can raise compression by about 1 to 1.5 points. For example, switching from 76cc to 64cc chambers on a 350 with flat-top pistons can increase compression from around 8.5:1 to about 10.0:1. Always verify piston-to-valve clearance.
Are CNC-ported heads worth the extra cost?
CNC-ported heads offer more consistent and optimized airflow than as-cast heads, often resulting in higher horsepower and torque. For serious performance builds, the extra cost can be justified. However, for mild street builds, as-cast heads like the Edelbrock E-Street provide good value and noticeable gains. We recommend CNC porting if you’re targeting over 400 horsepower.
Our Verdict
After researching and comparing the best aluminum heads for small block Chevy, the AFR 195cc Eliminator takes the top spot for its exceptional CNC porting, build quality, and proven performance on street and strip builds. For budget-conscious builders, the Edelbrock E-Street 60899 offers the best value without major compromises. Both are excellent choices depending on your goals and budget.
Last reviewed and spec-checked: June 4, 2026. We re-check our picks and listings periodically.
