The PR1505S is a performance aluminum cylinder head designed for late-model 5.0 liter Hemi V-8 engines. It is a modified version of World Products' PR1501S cylinder head, which features larger intake and exhaust ports, a 3-angle valve job and is made from high-grade aluminum for maximum strength and efficiency. This cylinder head comes with the necessary hardware for installation, including hardened exhaust studs, push rod guides, valve stem seals and valve springs. Additionally, PR1505S features an exhaust rocker ratio of 1.75-1 and an intake rocker ratio of 1.7-1, and is capable of supporting up to 600 horsepower.