High-performance cylinder head is cast from A356 T6 aluminum and utilizes high-flow 204cc intake runners. Assembled head, engineered for use with hydraulic camshaft applications, is fit with stainless steel 2.02" intake and 1.60" exhaust valves, PAC ovate beehive valve springs, retainers, locks, 7/16" rocker studs, and pushrod guide plates. Sold each.Note: Head requires roller rocker arms with .150" offset intake pushrod cup. Raised exhaust port exit may require custom headers.
- 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 lightweight 7MM 2.02" intake M-6507-D3047 and 1.60" M-6505-D3047 exhaust valves
- Uses PAC 1219X conical style valve springs with machined retainers and 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"
- 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 1.65:1 or 1.5:1 ratio roller rocker arms with .150" offset intake pushrod cup (not included)
- Raised exhaust port exit, custom headers may be required
- Check piston to valve clearance including radial valve clearance before installing these cylinder heads on your engine
- Uses Felpro® exhaust gasket part number 1487
- Cylinder Head Style:
- Assembled
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- Yes
- Combustion Chamber Volume (cc):
- 63cc
- Combustion Chamber Style:
- Heart
- CNC-Machined Intake Runner:
- No
- Intake Runner Volume (cc):
- 204cc
- Intake Port Shape:
- Rectangular
- Intake Port Location:
- Standard
- Intake Valve Angle:
- 20 degree
- CNC-Machined Exhaust Runner:
- No
- Exhaust Runner Volume (cc):
- 85cc
- Exhaust Port Shape:
- Square
- Exhaust Port Location:
- Raised
- Exhaust Valve Angle:
- 20 degree
- Intake Valves Included:
- Yes
- Intake Valve Diameter (in.):
- 2.020 in.
- Exhaust Valves Included:
- Yes
- Exhaust Valve Diameter (in.):
- 1.600 in.
- Valve Type:
- Stainless
- Maximum Valve Lift (in.):
- N/A
- Valve Springs Included:
- Yes
- Valve Spring Type:
- Single
- Outside Diameter of Outer Spring (in.):
- 1.290 in.
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Manganese bronze
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Ductile iron
- Valve Seat Machine Style:
- 3-angle
- Retainers Included:
- Yes
- Retainer Material:
- Steel
- Valve Stem Seals Included:
- No
- Valve Stem Seal Style:
- Umbrella
- Locks Included:
- Yes
- Lock Style:
- 7 degree steel
- 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:
- No
- 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:
- Utilizes premium stainless steel lightweight 7MM intake valves.
- Make:
- Ford
- Engine Family:
- Ford small block Windsor
- Engine Sizes:
- 4.7L/289-5.8L/351
- Years:
- 1963-1995
