World Products 053030-2 S/B Ford Windsor Jr. Cylinder Head, Complete

Windsor JR Cylinder Head for 302 Ford Engines

Designed for enthusiasts looking to unlock serious power from their 302 engines, the World’s Windsor JR cylinder head is a high-performance, cost-effective replacement for factory cast iron heads. With 180cc intake runners and 64cc exhaust ports, these heads ensure significantly improved airflow over OEM Ford heads. Engineered with a highly efficient combustion chamber design and larger valves, Windsor JR delivers robust, bolt-on power. Plus, it’s 50-state emissions legal, making it an ideal upgrade for street and race applications.

Key Features:

1.      Improved Airflow: Featuring 180cc intake runners and 64cc exhaust ports, these heads provide better airflow than OEM Ford heads, enhancing engine performance.

2.      Efficient Combustion Chamber: The 58cc combustion chamber and larger valves (1.94" intake, 1.60" exhaust) ensure optimized fuel burn, boosting power and torque while improving engine efficiency.

3.      Durable Construction: Made from cast iron, these heads are built for strength and reliability, suitable for high-performance applications.

4.      Emissions Legal: These heads are 50-state emissions legal, making them a factory replacement for street-driven vehicles.

5.      Versatile and Approved: Designed for both mechanical flat tappet and hydraulic roller camshafts, they are also IMCA-approved for various racing classes like Stock Cars and Hobby Stocks.

Additional Specifications:

• Combustion Chamber Volume: 58cc
• Intake Runner: 180cc
• Exhaust Port Volume: 64cc (standard location, dual exhaust bolt pattern)
• Valve Specifications: Machined for 1.94" intake & 1.60" exhaust valves (11/32" stem)
• Spark Plug Fitment: 14MM, .460" reach with 5/8" hex plugs (Accel 276 or equivalent)
• Valve Job: Multi-angle intake and radiused exhaust
• Valve Angle: Stock 20°
• Valve Springs: 1.437" dual springs with max lift .600", seat pressure 125 lbs. @ 1.850"
• Manley Stainless Steel Valves: Robust, high-quality components designed for reliability and performance.

Recommended Gaskets & Installation Torque Specs:

• Head Gasket: Fel Pro 1011 or Speedway 344-1011
• Intake Gasket: Fel Pro 1250
• Exhaust Gasket: Fel Pro 1415 or Speedway 344-1415
• Torque Specs: Refer to Iron Windsor Jr Head Instructions/Specifications for detailed guidelines

Why Choose Windsor JR Cylinder Heads?

• Optimized for Performance: A perfect balance of airflow and combustion efficiency for increased horsepower and torque.
• Flexible Applications: Compatible with a wide range of camshaft setups, making it ideal for different build configurations.
• Street and Race Ready: Emissions legal across all states, ensuring compliance without sacrificing performance.

Upgrade to Windsor JR heads and unleash the true potential of your 302 Ford engine. Experience reliable, efficient, and powerful performance with a straightforward, bolt-on upgrade!

Parts selection and machine work for Assembled head are done by Speedway Motors Racing Engines.

• Intake Port Dimension 1.98" X 1.09"
• Exhaust Port Dimension 1.30" X 1.22" 

Head Flow @ .600" Lift

• 236 intake, 169 exhaust (Super Flow 1050)
• 254 intake, 176 exhaust (Super Flow 600)

All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.

Gaskets Recommended:

• Head Gasket: Fel Pro 1011 or Speedway 344-1011
• Intake Gasket: Fel Pro 1250
• Exhaust Gasket: Fel Pro 1415  or Speedway 344-1415

Heat Bolt Torque Specs: Iron Windsor Jr Head Instructions/Specifications (PDF)