Ford Performance Z Aluminum Heads, Complete

Ford Performance Z Aluminum Heads, Complete

Bare Head Features - This cylinder head was designed using Solid Modeling Technology - Cast from prime A356 T6 aluminum - Fits 5.0L/5.8L Windsor engines - Heads are cast with high-flow ports - 20 degree inline valves - Suggested valve sizes: 2.02" intake and 1.60" exhaust - Requires competition valve job and bowl blending - Steel alloy intake and exhaust valve seats installed (no valve job) - Manganese-bronze valve guides installed with semi-finished ID -63cc CNC'd combustion chamber - Intake port volume as cast: 204cc - Exhaust port volume as cast: 85cc - Bare head weighs 27 lbs. - Accepts both tapered seat and gasket style 14mm spark plugs (Motorcraft AGSP-32-PP, Autolite 3924, 3925) - Requires guide plate M-6566-Z304D (not included) - Requires 7/16" screw-in studs (not included) - Requires M-6564-F351 roller rocker arms (not included) - Uses M-6505-B304 exhaust valve and M-6507-A304 intake valve (not included) - Raised exhaust port exit, custom headers may be required Assembled Head Features - Premium stainless steel 2.02" intake M-6507-A304 and 1.60" M-6505-B304 exhaust valves - Uses M-6513-BH Beehive style valve springs with machined retainers and machined valve locks. Most hydraulic cams can be used with these springs. 130lbs @ 1.800", 293lbs. @ 1.200" and CB @ 1.085" - Includes laser cut guide plates M-6566-Z304D for use with 5/16" pushrods and 7/16" rocker studs - Requires M-6564-F351 roller rocker arms (not included) - Check piston to valve clearance including radial valve clearance before installing these cylinder heads on your engine - Cork valve cover gasket recommended Ported Head Features - CNC ported version of M-6049-Z304D cylinder head to increase flow on intake and exhaust - Intake and Exhaust airflow increased approximately 10% - Bare casting

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