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4.6L/5.4L CNC PORTED 3V LH CYLINDER HEAD - ASSEMBLED
- New production cylinder head casting
- No exchange required. 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 an exchange!
- CNC ported to increase flow and performance
- 53 cc combustion chamber (Stock head is 51 cc)
- Intake runner volume: 202cc (Stock 174cc)
- Exhaust runner volume: 73cc (Stock 62cc)
- Intake flow rate at .600 lift: 272 CFM
- Exhaust flow rate at .600 lift: 190 CFM
- Assembled with factory guides, production springs, valves, retainers, locks, and seals
- Does not include camshaft, followers, and hydraulic lash adjusters
- Use head changing kit M-6067-3V46.
- Requires 2008-2010 12 MM spark plugs
- Heads will fit early cars originally equipped with "High thread" design spark plugs. Spark plugs M-12405-3V12MM and ignition coils M-12029-3V recommended.
Note: 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.