All-new ?Z2? cylinder head is designed to be very versatile, yet suit the needs of 500+ horsepower engines. Similar to the original ?Z? head, but with the added benefits of innovative ?velocity vane? intake ports, stock exhaust port and bolt locations, and the ability to accept straight rocker arms. Sold each, fully assembled head is cast from premium, A356 T6 aluminum, and fitted with stainless steel 2.050" intake and 1.600" exhaust valves, and premium valvetrain components.
- Cylinder Head Style:
- Assembled
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- No
- Combustion Chamber Volume (cc):
- 63cc
- Combustion Chamber Style:
- Heart
- CNC-Machined Intake Runner:
- No
- Intake Runner Volume (cc):
- 208cc
- Intake Port Shape:
- Rectangular
- Intake Port Location:
- Raised 0.125 in.
- Intake Valve Angle:
- 20 degree
- CNC-Machined Exhaust Runner:
- No
- Exhaust Runner Volume (cc):
- 75cc
- Exhaust Port Shape:
- Square
- Exhaust Port Location:
- Raised 0.125 in.
- Exhaust Valve Angle:
- 20 degree
- Intake Valves Included:
- Yes
- Intake Valve Diameter (in.):
- 2.050 in.
- Exhaust Valves Included:
- Yes
- Exhaust Valve Diameter (in.):
- 1.600 in.
- Valve Type:
- Stainless
- Maximum Valve Lift (in.):
- 0.650 in.
- Valve Springs Included:
- Yes
- Valve Spring Type:
- Single
- Outside Diameter of Outer Spring (in.):
- 1.207 in.
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Manganese bronze
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Steel
- 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:
- 10 degree
- Camshaft Style:
- Hydraulic roller
- Spark Plug Style:
- Angled
- Guideplates Included:
- Yes
- Guideplate Pushrod Size:
- 5/16 in.
- 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 pushrod
- Machined for O-Ring:
- No
- Quantity:
- Sold individually.
- Notes:
- Valve spring closed pressure is 145 lbs. @1.800 in., and open pressure is 258 lbs. @1.175 in. Coil bind @1.100 in. at 0.650 in. max lift.
- Make:
- Ford
- Engine Family:
- Ford small block Windsor
- Engine Sizes:
- 4.7L/289-5.8L/351
- Years:
- 1963-1995
