Speedmaster Aluminum Bare Cylinder Head

Speedmaster aluminum bare cylinder heads are a lightweight performance upgrade over heavy, restrictive factory heads. They suit engine builders who want to choose their own valves, springs, retainers and rocker components. This line covers bare aluminum heads for popular domestic V8 engine families.

Key Features:

• Aluminum construction: Gravity die-cast aluminum is significantly lighter than stock cast iron heads.
• Higher compression potential: Aluminum dissipates heat well, so it can tolerate more compression before detonation sets in.
• Bare design: Supplied without valves, springs, retainers, locks, seals or rocker hardware, so you can build the valvetrain to match your cam and goals.
• Valve guides and seats installed: Final sizing and a valve job are required to match the valves you choose.
• Port and chamber options: The line includes as-cast and CNC-machined versions, from street and strip builds to higher-RPM race engines.
• Natural finish: Ready for your machine shop and assembly.

Speedmaster bare cylinder heads give engine builders a cost-effective base for a custom, performance-focused build. They are sold by the individual head. Choose the child item that matches your engine family and build requirements.