Twisted Wedge 185-series cylinder head includes relocated combustion cham-bers and intake valves that dramatically increase mid-lift air flow, while providing added piston-to-valve clearance and valve-to-bore clearance, allowing higher lift cams, and large valves without the need for machine work. Head fits all 2V Romeo and Windsor engines, and is fully compatible with all OE-type camshafts, followers, lash adjusters, valve covers, and most front covers. Sold each as a fully assembled cylinder head.
- Cylinder Head Style:
- Assembled
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- Yes
- Combustion Chamber Volume (cc):
- 38cc
- Combustion Chamber Style:
- Twisted Wedge
- CNC-Machined Intake Runner:
- No
- Intake Runner Volume (cc):
- 185cc
- Intake Port Shape:
- Rectangular
- Intake Port Location:
- Standard
- Intake Valve Angle:
- 6 degree
- CNC-Machined Exhaust Runner:
- No
- Exhaust Runner Volume (cc):
- 93cc
- Exhaust Port Shape:
- D-port
- Exhaust Port Location:
- Standard
- Exhaust Valve Angle:
- 9 degree
- Intake Valves Included:
- Yes
- Intake Valve Diameter (in.):
- 1.840 in.
- Exhaust Valves Included:
- Yes
- Exhaust Valve Diameter (in.):
- 1.450 in.
- Valve Type:
- N/A
- Maximum Valve Lift (in.):
- 0.600 in.
- Valve Springs Included:
- Yes
- Valve Spring Type:
- Single w/Damper
- Outside Diameter of Outer Spring (in.):
- 0.940 in./1.050 in.
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Powdered metal
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Ductile iron
- Valve Seat Machine Style:
- 3-angle
- Retainers Included:
- Yes
- Retainer Material:
- Chromoly
- Valve Stem Seals Included:
- Yes
- Valve Stem Seal Style:
- Positive stop
- Locks Included:
- Yes
- Lock Style:
- 7 degree
- Camshaft Style:
- Hydraulic Roller
- Spark Plug Style:
- Angled
- Guideplates Included:
- No
- Guideplate Pushrod Size:
- N/A
- Rocker Arm Studs Included:
- No
- Rocker Arm Nut Thread Size:
- N/A
- Accessory Bolt Holes Drilled:
- Yes
- Valve Cover Mounting Style:
- Perimeter bolt
- Heat Crossover:
- No
- Steam Holes Drilled:
- No
- Oiling Style:
- Through head
- Machined for O-Ring:
- No
- Quantity:
- Sold individually.
- Notes:
- 2 Valve
- CARB EO Number(s):
- D-747-3
- Emissions:
- California EO Approved
- Make:
- Ford
- Engine Family:
- Ford modular V8
- Engine Sizes:
- 4.6L/281-5.4L/330
- Years:
- 1992-2016
