A hemispherical combustion chamber is a combustion chamber in the cylinder head of an internal combustion engine with a domed "hemispheric" shape. An engine featuring this type of …

Upgrade your HEMI with a set of ported heads by Arrington Performance. Our heads are CNC ported and single point valve jobbed to provide the best horsepower and smoothest air flow.

The leaders in Gen III Hemi performance, the experts with more than 40 years of combined experience, designed these heads from scratch to be the highest-flowing and best-performing …

Cylinder Head, 185cc Black Hawk Gen 3 Cylinder Head, Left Side, 2.050 in. Intake, 1.590 in. Exhaust, Assembled, Aluminum, Mopar Gen III Hemi, Each Part Number: AFR-2509

How do we know these cylinder heads work better than anything else ever produced? We raced the entire 2024 Radial Outlaws season with these heads installed in the world’s quickest Gen3 …

Modern Muscle / ModernMuscleXtreme.com CNC ported heads are unmatched in performance and endurance. Relying upon over 40 years of HEMI experience as it applies to drag racing, …

Manufactured from A356 aluminum using permanent-mold technology, AFR's 212cc Black Hawk Gen III Hemi Aluminum Cylinder Heads feature 100% CNC ported intake ports, exhaust ports …

Our groundbreaking Billet G3 Hemi Cylinder head incorporates several unique design features that reduce complexity, cost and allow us to manufacture them most efficiently.

Now offering an improved HD cylinder head, as used on all FHO street hemi engines. These heads are an upgrade over the already excellent Stage V replacement models.

Mopar Performance Cast Iron & Aluminum Cylinder Heads for 5.7L, 6.1L, 426, and Pro Stock Hemi Engines. 426 heads are made with stronger updated castings and are machined to work …