Speedmaster BBC Aluminum Cylinder Head Intake Chamber

Speedmaster BBC aluminum cylinder heads are built for big block Chevrolet engines. They give street, strip and street/strip builders a lightweight alternative to cast iron heads. The line is also sold as cylinder heads with angle spark plug layouts and a choice of intake runner and combustion chamber volumes, so you can match the head to your engine combination.

Key Features:

• Aluminum construction: Cast aluminum heads reduce weight on the front of the vehicle and shed heat well.
• Big block Chevy design: Made for Mark IV-style BBC engines, with angle spark plug and raised exhaust port configurations.
• Port and chamber options: The line includes as-cast and CNC-ported versions, with oval and rectangular intake port styles, so you can choose a head for your intended RPM range and power level.
• Bare or assembled: Bare heads suit custom builds. Assembled heads come with valves and springs installed for easier installation. Assembled heads are available for hydraulic and solid flat tappet and roller camshaft setups.
• Machined for accessories: The heads have drilled accessory bolt holes and a specific valve cover mounting style, which varies by model.

Check the specifications of each head in the line, including intake runner volume, combustion chamber volume, port shape and valve train components. Make sure you choose the right head for your camshaft type and engine build.