4.6L/5.4L LH HIGH-FLOW CNC CYLINDER HEAD
This part is no longer available.
WARNING:This part is designed and intended for competition use only or off-highway use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this part on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.
- New OEM production cylinder head casting
- 5 axis CNC ported to increase flow and performance
- 48 cc combustion chamber (Stock head is 51 cc)
- Increased size 35.0 mm intake valves (Stock intake valve is 34 mm)
- Increased size inconel 38.5 mm exhaust valves (Stock exhaust valve is 37.5 mm)
- Intake runner volume: 214cc (Stock 174cc)
- Exhaust runner volume: 73cc (Stock 62cc)
- Intake flow rate at .600 lift: 291 CFM
- Exhaust flow rate at .600 lift: 191 CFM (no pipe)
- Fully assembled with bronze guides, light-weight steel retainers,upgraded valve springs
- Includes Ford 4.6L 3-Valve Cam Phaser Limiter Kit
- Does not include camshaft, followers and hydraulic lash adjusters
- Use head changing kit M-6067-3V46.
- Requires 2008-2010 12mm spark plugs
- Heads will fit early cars originally equipped with "High Thread" design spark plugs. Requires spark plug and M-12039-3V ignition coil update.
- 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 3L3E part number.
Engine: Cylinder Heads
12" x 9.75" x 22"
Country of Origin