Bare Head Features
  • Fits 302/351 Windsor engines
  • This cylinder head was designed using Solid Modeling Technology
  • Cast from prime A356 T6 aluminum
  • 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 1.65:1 or 1.5:1 ratio roller rocker arms with .150" offset intake pushrod cup (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
  • Check your intake manifold for port match; not all intakes are compatible due to the tall high-flow ports. Does not fit M-9424-Z51/-Z51P 
  • Uses Felpro® exhaust gasket part number 1487
  • Felpro® VS13264T valve cover gasket recommended
Part Type
Engine: Cylinder Heads
Instruction Sheet
Warranty Availability
Not Available
Package Dimensions
8" x 24" x 8"
Package Weight
24 lb(s)
UPC Code
Country of Origin
United States