The Dusterhoff Racing Air Assault Ported Gen 3 HEMI Cylinder Heads are a performance-focused airflow upgrade developed for enthusiasts looking to get more from naturally aspirated, supercharged, and other high-performance Gen 3 HEMI combinations. By improving the airflow characteristics of the factory-style cylinder head architecture, the Air Assault porting package helps the engine move air more efficiently and allows supporting modifications such as camshafts, intake manifolds, headers, and forced induction to work more effectively together. Rather than treating cylinder heads as an isolated horsepower upgrade, Dusterhoff Racing approaches them as part of the complete engine combination, making proper component selection and custom tuning especially important. These heads are an excellent option for street performance vehicles, aggressive naturally aspirated combinations, stroker engines, and high-horsepower boosted builds where increased cylinder head airflow can become an important part of reaching the desired power level. For Gen 3 HEMI owners who have already addressed the basic bolt-ons and are ready to improve the engine’s underlying airflow capability, Air Assault Ported Cylinder Heads provide a serious foundation for the next stage of the build.

This product is a CNC cylinder head porting service only. It is NOT a cylinder head rebuild service. Customers must send in their own OEM 6.4L/6.2L Gen 3 HEMI cylinder heads in exchange for a ported set. This service includes professional disassembly, inspection, cleaning, CNC porting, CNC machining, and reassembly of your existing cylinder heads.

This service does NOT include new valves, valve guides, valve seats, valve springs, retainers, locks, or any other replacement valvetrain components unless they are specifically selected and purchased as optional upgrades. Your factory components will be reused if they are found to be serviceable during inspection.

All cylinder heads are thoroughly inspected before machining begins. If your cylinder heads require additional machine work or replacement components due to excessive wear, damage, cracks, broken parts, or components that do not meet service specifications, those repairs are not included in the standard porting service.

If additional repairs are required to complete your cylinder heads, the cost of those repairs will be deducted from your refundable core credit (if applicable). If the required repairs exceed the available core credit, our team will contact you to discuss the necessary work and obtain approval before proceeding.

Cylinder heads with severe damage that are determined to be unsuitable for machining or rebuilding may not qualify for the full core credit. Customers will be contacted before any additional charges are incurred or if replacement castings are recommended.

Cylinder heads play a major role in determining how efficiently a HEMI can fill and evacuate its cylinders. The intake side must supply the engine with enough air to support the desired horsepower, while the exhaust side must efficiently move spent gases out of the combustion chamber. Improving these airflow paths can help the engine make better use of other performance components rather than forcing those parts to work around restrictions in the factory ports.

This becomes particularly valuable when pairing ported heads with a performance camshaft. A larger cam can provide additional valve lift and duration, but the full benefit depends on the cylinder head’s ability to take advantage of that increased valve event. Combining an appropriately selected Dusterhoff Racing camshaft with Air Assault ported heads can create a more complete airflow package for customers pursuing serious naturally aspirated performance.

Ported heads can also provide value in forced-induction Gen 3 HEMI builds. Superchargers increase the amount of air entering the engine, but efficient cylinder heads can help the engine process that airflow with less restriction. For Hellcat-based combinations, Whipple builds, centrifugal supercharger applications, and other high-output setups, cylinder head airflow should be considered alongside boost level, camshaft selection, fuel system capacity, exhaust flow, and engine strength.

The Air Assault heads can be incorporated into builds ranging from performance-oriented 5.7L and 6.1L engines to 6.4L/392 combinations and compatible 6.2L supercharged applications. The exact head configuration should be selected according to the engine platform and intended use rather than assuming one cylinder head configuration fits every Gen 3 HEMI.

Supporting valvetrain components are equally important. Depending on the camshaft and intended RPM range, a complete build may require upgraded valve springs, pushrods, lifters, and other valvetrain components. Piston-to-valve clearance and other critical engine clearances must also be verified during assembly.

For customers building a serious Gen 3 HEMI, the Dusterhoff Racing Air Assault Ported Cylinder Heads provide an airflow-focused upgrade that can grow with the rest of the combination, whether the goal is a responsive street car, a strong naturally aspirated package, or a high-horsepower forced-induction build.

Looking for additional upgrades? Browse our catalog!

Specifications & Features

• Brand / Manufacturer: Dusterhoff Racing
• Product Line: Air Assault
• Product Type: Performance Ported Cylinder Heads
• Engine Family: Gen 3 HEMI
• Engine Compatibility: Configuration-dependent, available for compatible Gen 3 HEMI engine combinations
• Vehicle Compatibility: Application-dependent, including compatible Dodge Challenger, Charger, Magnum, Chrysler 300, Jeep Grand Cherokee, Dodge Durango, Ram, and other Gen 3 HEMI platforms
• Year Compatibility: Varies according to engine displacement, cylinder head architecture, vehicle, and selected configuration
• Cylinder Head Configuration: Application-specific
• Porting: Performance-oriented intake and exhaust port work
• Primary Benefit: Improved cylinder head airflow and reduced airflow restriction
• Performance Benefits: Supports increased horsepower potential and helps maximize compatible camshaft, intake, exhaust, and forced-induction upgrades
• Naturally Aspirated Use: Yes
• Forced-Induction Use: Yes, when properly configured for the complete engine combination
• Stroker Engine Use: Suitable for compatible performance stroker combinations
• Camshaft Compatibility: Compatible performance camshaft recommended based on the intended build
• Supporting Valvetrain: Springs, pushrods, lifters, and other components may be required depending on camshaft specifications and engine configuration
• Size / Dimensions: OEM-based application-specific cylinder head dimensions
• Weight: Varies by cylinder head configuration
• Color / Finish: Natural aluminum / machined finish; appearance may vary
• Quantity: Verify selected product configuration when ordering
• Intended Uses: Street performance, cam and head packages, naturally aspirated builds, stroker engines, supercharged combinations, high-horsepower Gen 3 HEMI builds, drag racing, and competition applications
• Custom Tuning: Strongly recommended and typically required when incorporated into a modified engine combination
• Installation Difficulty: Advanced
• Professional Installation: Strongly recommended
• Installation Note: Proper head gasket selection, fastener torque, valvetrain geometry, piston-to-valve clearance, and all applicable engine clearances must be verified during assembly.
• Fitment Note: Exact cylinder head configuration and supporting components should be matched to the engine displacement, model year, camshaft, induction system, power adder, intended RPM range, and overall performance goals before ordering.