Qualcast 15-120011K01 Ready-to-Assemble Aluminum Cylinder Head Assembly 196cc SBC

The Qualcast 15-120011K01 is a Ready-to-Assemble aluminum cylinder head assembly designed for Chevrolet small block engines (262–400 cubic inch). Built with a cast aluminum construction and 64cc combustion chambers, this head delivers improved airflow and performance for street and performance applications. The heads are drilled to accept both standard and Vortec intake manifolds, offering versatile compatibility.

Key Features:

• Material: Cast aluminum construction for reduced weight and improved heat dissipation
• Combustion Chamber Volume: 64 cc
• Intake Runner Volume: 196 cc rectangular port style
• Exhaust Runner Volume: 69 cc
• Intake Valve Diameter: 2.020 in. stainless steel
• Exhaust Valve Diameter: 1.600 in. stainless steel
• Spark Plug Angle: Straight
• Max Valve Lift: 0.500 in.
• Recommended Cam Type: Flat Tappet
• Valve Spring OD: 1.260 in.
• Closed Spring Pressure: 120 lbs. @ 1.700 in.
• Open Spring Pressure: 300 lbs. @ 1.200 in.
• Coil Bind: 1.160 in.
• Valve Spring Retainer Material: Chromoly
• Compatible with standard and Vortec intake manifolds

This kit includes all components needed to assemble the heads, including street performance valves and springs (up to 0.500 in. lift). Qualcast cylinder heads are engineered to deliver OEM-quality performance with aftermarket value, making them an excellent choice for engine rebuilds and performance upgrades on GM small block platforms.