Ford Racing Driver Side Assembled CNC Ported Cylinder Head for 4.6L and 5.4L 3V Mustangs.-New production cylinder head castings
-CNC ported to increase flow and performance
-50.3cc combustion chamber
-Intake flow increased approximately 20%
-Exhaust flow increased approximately 30%
-Assembled with production springs, valves, retainers, locks, and seals
-Minimize your vehicle down time waiting for a shop to port your heads. Get a brand new head for a little more than the price of exchange!
-No exchange required
-Heads will fit early cars originally equipped with "High thread" design spark plugs. Requires spark plug and ignition coil update
-Requires 2008-2010 12 MM spark plugs
Engines with late style 12MM spark plugs can be identified by coil engineering number 8L3E Engines with early style 16mm "High Thread" design spark plugs can be identified by coil engineering number 3L3E part number.
*Does not include camshaft, followers and hydraulic lash adjusters.
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