High-Performance HEMI Cylinder Heads
HEMI cylinder heads are a critical upgrade for building reliable horsepower. We stock high-flow options for 5.7 HEMI heads, 6.4 HEMI heads, and Hellcat cylinder heads that support aggressive tuning and high-out setups.
Every casting we offer improves airflow, combustion efficiency, and top-end performance across Dodge, Chrysler, Jeep, and RAM platforms.
What HEMI Cylinder Heads Actually Do for Power
Cylinder heads control airflow, combustion, and temperature at the top of the engine. They manage how air and fuel enter, how exhaust exits, and how efficiently the engine makes power. A better head increases flow, allows for more aggressive cam profiles, and improves combustion stability tenfold.
The shape of the head plays a major role in throttle response and torque on HEMI engines. Upgrading heads means more power without risking engine reliability.
Choosing the Right Heads for Your HEMI Setup
Each version of the HEMI platform responds differently to head upgrades. Selecting the right casting depends on your engine size, tuning goals, and how much power you’re pushing. Below are different HEMI cylinder head types to help you determine which is best for your build.
5.7 HEMI Heads: Best Starting Point for Performance
5.7 HEMI heads offer a solid mix of compatibility, cost, and upgrade potential. They’re ideal for street builds and entry-level power setups. Many aftermarket versions improve airflow with larger intake ports and stronger valve springs.
These HEMI cylinder heads pair well with cam swaps and tuning without stressing the whole engine block, too. For daily drivers or mild race setups, they offer reliable gains without overcomplicating the process.
6.4 HEMI Heads: More Flow, More Potential
6.4 HEMI heads increase airflow through larger parts and valves, giving the engine more top-end power and throttle response. These types of HEMI heads support higher compression and more aggressive cam profiles.
These heads, common in Scat Pack and Durango SRT builds, provide a solid foundation for naturally aspirated or lightly boosted applications.
6.4 HEMI cylinder head flow numbers outperform most 5.7 casting without relying on a full engine swap.
Hellcat Cylinder Heads: Built to Handle Boost
Hellcat cylinder heads are cast for pressure and heat. They feature reinforced structures, stronger valve seats, and superior cooling passages, making them ideal for high-boost builds.
These heads handle aggressive tuning without cracking or deteriorating under load. When paired with the right bottom end and fueling setup, they support some serious engine power.
FAQs About HEMI Cylinder Heads
Learn more about HEMI cylinder heads and their functionality through our frequently asked questions.
Can I use 6.4 HEMI heads on a 5.7 block?
Yes, but not without changes. The combustion chamber size and valve geometry differ between 6.4 HEMI cylinder heads and a 5.7 short block. You’ll need a custom cam and tuning to make it work without affecting compression and piston-to-valve clearance.
Are Hellcat cylinder heads worth it on a naturally aspirated build?
Not really. Hellcat cylinder heads are built for boost; without forced induction, you won’t see the full benefit. The flow velocity may actually drop at lower RPMs. Make sure only to use heads that match your setup and goals.
Do aftermarket HEMI heads require tuning?
Yes. Any time you change HEMI cylinder heads, airflow changes, too. That affects fuel delivery, ignition timing, and cam behavior. Tuning helps the engine adjust and prevents lean conditions, misfires, or idle issues.
Shop HEMI Cylinder Heads Now and Upgrade Your Car’s Performance Today
Stop leaving horsepower on the table. Dustenhoff Racing’s inventory of HEMI cylinder heads includes proven options for 5.7, 6.4, and Hellcat platforms, all ready to support big cams and forced induction.
If you’re serious about performance, it’s time to start at the top. Not sure which heads are right for your build? Contact us and we’ll help you get it right.
