Made in USA
"Z-Head" Assembled Aluminum Cylinder Head Fits 302/351W
InfoVehicle Info Needed
FORD PERFORMANCEPART NUMBER: 397-M-6049Z304DA

"Z-Head" Assembled Aluminum Cylinder Head Fits 302/351W

$1,70599
ShippingShips on 10/23/2026
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"Z-Head" Cylinder Head
    "Z-Head" Assembled Aluminum Cylinder Head
  • Fits 302/351W
  • Intake Valve: 2.02"
  • Exhaust Valve: 1.60"
  • Intake Ports: 204cc
  • Exhaust Ports: 85cc
  • Combustion Chambers: 63cc
  • CNC Ported
  • 1/Pkg.

  • Manufacturer Part Number: M-6049-Z304DA

    Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). The manganese-bronze valve guides are installed with a semi-finished I.D. and the combustion chambers are CNC-machined. Laser-cut guideplates are included, and they accept both tapered seat and gasket-style 14mm spark plugs.

  • Cast From Prime A356 T6 Aluminum
  • Heads are Cast w/High Flow Ports
  • 20 Degree Inline Valves
  • 145 lbs. @ 1.80 in. Valve Spring Closed Pressure
  • 358 lbs. @ 1.175 in. Valve Spring Open Pressure
  • Steel Alloy Intake/Exhaust Valve Seats
  • Manganese-Bronze Valve Guides
  • 63cc CNCd Combustion Chamber
  • 204cc Intake Port Volume As Cast
  • 85cc Exhaust Port Volume As Cast
  • Made in the USA

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    Ford Racing Cylinder Heads

    Upgrade airflow and unlock real horsepower with Ford Performance 289/302/351W Aluminum Cylinder Heads, available at JEGS. Designed for enthusiasts building or upgrading small block Ford engines, these high-performance cylinder heads deliver improved combustion efficiency, increased power, and modern reliability. Engineered by Ford Performance, the Ford Performance 289/302/351W Aluminum Cylinder Heads are built to meet the demands of street and strip applications while maintaining OEM-level quality and fitment. Whether you’re restoring a classic Mustang or building a high-output Windsor-based engine, these heads provide a proven performance upgrade.

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    Performance Benefits & Key Features

    Ford Performance aluminum cylinder heads are designed to significantly improve airflow, which directly impacts horsepower and torque output. Featuring optimized intake and exhaust port designs, these heads enhance air/fuel mixture delivery and exhaust scavenging for more efficient combustion. The result is stronger acceleration, improved throttle response, and increased overall engine efficiency.

    Constructed from lightweight aluminum, these cylinder heads offer superior heat dissipation compared to traditional iron heads, helping reduce engine temperatures and improve durability under load. Key specifications often include larger valve sizes, precision-machined combustion chambers, and upgraded valve springs designed to support performance camshafts and higher RPM operation. These heads are capable of supporting builds in the 350–500+ horsepower range depending on configuration.

    For performance enthusiasts, these upgrades translate into a noticeable improvement in engine responsiveness and power delivery. Whether naturally aspirated or paired with mild forced induction, these cylinder heads provide the airflow and strength needed for consistent, reliable performance.

    Fitment, Compatibility & Applications

    The Ford Performance 289/302/351W Aluminum Cylinder Heads are designed for compatibility with small block Ford Windsor engines, including 289, 302, and 351W platforms. This makes them an ideal choice for a wide range of Ford vehicles, from classic muscle cars to modern performance builds.

    Perfect for street performance, drag racing, and restoration projects, these cylinder heads are commonly used in Mustangs, Falcons, Broncos, and classic Ford trucks. Their OEM-based design ensures proper fitment with factory-style components, while also allowing seamless integration with aftermarket intake manifolds, camshafts, and valvetrain upgrades.

    These heads are especially popular among enthusiasts performing engine rebuilds or upgrades, as they offer improved performance without requiring extensive modifications. Whether you're building a daily driver with added power or a weekend street/strip machine, they provide the flexibility and compatibility needed to meet your goals.

    Backed by Ford Performance’s reputation for engineering excellence and durability, these aluminum cylinder heads deliver reliable, high-performance results. Explore the available options at JEGS to find the right setup and take your small block Ford engine to the next level.

Part TypeCylinder Head
Product LineFord Performance 289/302/351W Aluminum Cylinder Heads
BrandFORD PERFORMANCE
Package Height7.7
Package Width10.2
Package Length22.0
Weight31.0 PG
Part CategoryPerformance Parts
UsageStreet/Performance
TypeComplete
PreparationBolt On (Not Required)
EmissionN/A
Cylinder Head TypeRectangular Port
Part FitmentSemi Universal
FinishCast Aluminum
Engine Make/SizeFord 302-351W
Vendor Part NumberM-6049-Z304DA
Package Qty1
Package TypeEA
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Part Number : 397-M-6049-Z304D
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Some parts are not legal for use in California or other states with similar laws / regulations
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