5.7L HEMI CNC Ported Cylinder Head Set

The Modern Muscle Performance 5.7L HEMI CNC Ported Heads are a performance upgrade for 2003-2008 5.7L HEMI engines. These heads are ported to order and have an estimated 3-5 week lead time. They feature proprietary CNC porting for intake and exhaust ports, hand blending of bowls, and a multi-angle valve job. Included with these heads are new seals, shims, and Moly retainers. The heads are also cleaned, deburred, and assembled. An optional upgrade is available from the standard PSI 1511 springs to PSI 1516 springs for an additional cost. It is important to check local and state laws for emissions compliance before purchasing this product. Customers must send in their original 5.7L HEMI heads for reworking or opt for a core charge option.