Ford Performance "Z-Head" Assembled Aluminum Cylinder Head Fits 302/351W
397-M-6049Z304DA
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"Z-Head" Cylinder Head
Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). The manganese-bronze valve guides are installed with a semi-finished I.D. and the combustion chambers are CNC-machined. Laser-cut guideplates are included, and they accept both tapered seat and gasket-style 14mm spark plugs.
Specifications:
Is this a pair of heads or just one head?
Do these come with rockers arms if not which one is suitable for these heads
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