Z2 289/302/351W ALUMINUM HEAD WITH VELOCITY VANE
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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.
The small block Ford Z2 aluminum cylinder head features an advanced “Velocity Vane” intake port design that delivers outstanding street/strip power. Developed with the aid of advanced computer aided engineering simulation tools, the unique design improves power throughout the RPM range. This high performance aluminum cylinder head is a direct bolt on for Ford 289/302/351W engines and retains OEM exhaust, intake, and accessory mounting locations.
View the dyno test results here: Z2 Head Dyno Test Graph
Fits 289/302/351 Windsor engines
Cast from prime 356 T6 aluminum
Heads retain Ford OEM intake and exhaust port location and flange
Intake ports feature a unique “Velocity Vane” in port floor to direct airflow around the valve stem – that leads to more HP and torque throughout the full power range
20° degree inline valve angle
Premium stainless steel valves - 2.05" intake - 1.60" exhaust
PAC 1219X conical style valve springs with machined retainers and 10° machined valve locks. Most hydraulic cams can be used with these springs.
Valve spring closed pressure - 145 lbs. @1.800"
Valve spring open pressure - 358 lbs. @ 1.175"
Coil Bind @1.100” 0.650” Max Lift.
Includes laser cut guide plates for use with 5/16" pushrods and 7/16" rocker studs
Steel alloy intake and exhaust valve seats
Manganese-bronze valve guides
63cc combustion chamber
Uses gasket style 14mm spark plugs
Uses small block Ford 7/16 stud mount, 1.65 ratio rocker arms
Check piston to valve clearance including radial valve clearance before installing these cylinder heads on your engine
Uses Intake gasket - M-9439-A50 and FelPro exhaust gasket part number 1415
Engine: Cylinder Heads
8.5" x 11.5" x 26"
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