Skip to content
Are you in Oklahoma or Arizona? Are you in Oklahoma or Arizona?

Are you in Oklahoma or Arizona?

We hope to service your area soon. In the meantime, please choose the brand you’d like to browse, and we will redirect you.

Not ordering to one of these states? Click here to continue shopping.

302/351W Assembled Z-Head Aluminum
302/351W Assembled Z-Head Aluminum

Pick up at your selected dealer is free

Make the most of your vehicle – and your lifestyle

Engineered to fit your vehicle

Part No: {{ selectedVariant.sku }}

302/351W Assembled Z-Head Aluminum {{ variantColorValue }}

{{ selectedVariant.price | money }} {{ selectedVariant.compare_at_price | money }}

Pick up at your selected dealer is free

Make the most of your vehicle – and your lifestyle

Engineered to fit your vehicle

About This Product

  • 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 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 (Rocker Stud PN is ARP DRP154) 
  • 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
  • Ford Performance 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  

    This part has been determined by the California Air Resources Board (CARB) not to have an adverse effect on emissions when installed and used properly in the application(s) identified in the product description. Under EPA and CARB policy, such parts may be installed in vehicles driven on public roads and highways.

    Read More

    Technical Specifications

    Country of origin : United States
    Emission type : CARB Approved
    UPC : 756122092033
    Warranty : Not Available
    Instruction sheet : Click Here
    Read More

    Return Policy

      Ford or the dealer (where applicable) will accept returns or exchanges of applicable Motorcraft, Ford Parts, Omnicraft, Ford Accessories, Lincoln Accessories and Ford Performance Parts within 30 days of your receipt. Once you have initiated a return, you must return the part(s) within 14 calendar days. Electronics, wheels and custom-painted parts cannot be returned at any time for any reason. All returns and exchanges must be returned to Ford (for orders shipped directly to you) or the dealer (for orders picked up from the dealer) solely at your expense, except in the case of Ford or dealer error. Returned items must be in the original box, in new, non-installed, resalable condition, with all instructions and hardware, and in the condition it was received. If all of these conditions are not met, it is at discretion of Ford or the dealer (where applicable) to accept the return. Shipping charges are non-refundable. If you opt not to provide a VIN(s), you are solely responsible for making sure the accessories you have ordered are compatible with your vehicle. Attempting to return any parts or assemblies that have been tampered with in a manner that affects the re-salability and/or safety of the part(s) is prosecutable under the law, and these parts and assemblies are not eligible for return credit, refund and/or exchange. If you believe a product sold by Ford has a condition or defect that might make it unsafe, please report this safety concern immediately by using the chat feature on the Site or by calling 1-844-589-0060.

    Read More

    About This Product

    • 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 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 (Rocker Stud PN is ARP DRP154) 
    • 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
    • Ford Performance 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  

      This part has been determined by the California Air Resources Board (CARB) not to have an adverse effect on emissions when installed and used properly in the application(s) identified in the product description. Under EPA and CARB policy, such parts may be installed in vehicles driven on public roads and highways.

      Read More

      Technical Specifications

      Country of origin : United States
      Emission type : CARB Approved
      UPC : 756122092033
      Warranty : Not Available
      Instruction sheet : Click Here
      Read More

      Return Policy

        Ford or the dealer (where applicable) will accept returns or exchanges of applicable Motorcraft, Ford Parts, Omnicraft, Ford Accessories, Lincoln Accessories and Ford Performance Parts within 30 days of your receipt. Once you have initiated a return, you must return the part(s) within 14 calendar days. Electronics, wheels and custom-painted parts cannot be returned at any time for any reason. All returns and exchanges must be returned to Ford (for orders shipped directly to you) or the dealer (for orders picked up from the dealer) solely at your expense, except in the case of Ford or dealer error. Returned items must be in the original box, in new, non-installed, resalable condition, with all instructions and hardware, and in the condition it was received. If all of these conditions are not met, it is at discretion of Ford or the dealer (where applicable) to accept the return. Shipping charges are non-refundable. If you opt not to provide a VIN(s), you are solely responsible for making sure the accessories you have ordered are compatible with your vehicle. Attempting to return any parts or assemblies that have been tampered with in a manner that affects the re-salability and/or safety of the part(s) is prosecutable under the law, and these parts and assemblies are not eligible for return credit, refund and/or exchange. If you believe a product sold by Ford has a condition or defect that might make it unsafe, please report this safety concern immediately by using the chat feature on the Site or by calling 1-844-589-0060.

      Read More

      Shopping Cart

      {{ cartItemCountWithoutLabour }} item

      Your cart is currently empty.

      Return To Home
      Subtotal
      {{ cart.total_price | money }}
      Shipping
      Calculated at checkout
      View Cart