302/351W "Z-HEAD" ALUMINUM - ASSEMBLED 63CC M-6049-Z304DA

Fits 302/351 Windsor engines

Cast from prime A356 T6 aluminum

Heads are cast with high-flow ports

20 degree inline valves

Premium stainless steel 2.02" intake M-6507-A304 and 1.60" M-6505-B304 exhaust valves

Uses M-6513-BH conical style valve springs with machined retainers and machined valve locks. Most hydraulic cams can be used with these springs. 130# @ 1.800", 318lbs. @ 1.200" and CB @ 1.150"

Includes laser cut guide plates M-6566-Z304D for use with 5/16" pushrods and 7/16" rocker studs

Steel alloy intake and exhaust valve seats

Manganese-bronze valve guides

63cc CNC'd combustion chamber

Intake port volume as cast: 204cc

Exhaust port volume as cast: 85cc

Accepts both tapered seat and gasket style 14mm spark plugs (Motorcraft AGSP-32-PP, Autolite 3924, 3925)

Requires M-6564-F351 1.65:1 or M-6564-G351C 1.5:1 ratio roller rocker arms with .150" offset intake pushrod cup (not included)

Raised exhaust port exit, custom headers may be required

Ford Racing M-9439-A50 intake manifold gasket recommended

Uses Felpro® exhaust gasket part number 1487

Felpro® VS13264T valve cover gasket recommended

Check piston to valve clearance including radial valve clearance before installing these cylinder heads on your engine