The ''Z'' Aluminum head for 5.0L/5.8L Windsor engines is a high performance head that will give you some serious power. These heads are cast from prime A356-T6 aluminum and feature 63cc combustion chambers. Other features include steel alloy intake and exhaust valve seats, Mag-Bronze valve guides installed with a semi-finished ID. These heads are made to accept both tapered seat and gasket style 14mm spark plugs. This cylinder head was designed using Ford's Solid Modeling Technology. These heads require screw-in rocker studs, guideplates, and roller rockers (not included).

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