Alum Cyl Head CNC GM LS1 65cc A/P 225cc Bare

The Trick Flow Alum Cyl Head CNC GM LS1 65cc A/P 225cc Bare is a precision-engineered aluminum cylinder head designed for serious LS1 engine builders and performance enthusiasts who demand maximum flow potential without compromise. This bare casting is purpose-built for street, strip, and track applications where cylinder head selection directly impacts horsepower, torque delivery, and overall engine efficiency.

CNC-machined from premium aluminum alloy, this cylinder head features a 65cc combustion chamber volume paired with 225cc intake runners—a combination that balances high-RPM flow characteristics with street-friendly low-end responsiveness. The 65cc chamber volume is ideal for LS1 applications where you're targeting moderate compression ratios without sacrificing quench clearance or detonation margin. Trick Flow's attention to port geometry, valve seat quality, and runner transitions ensures that every cc of displacement works efficiently, translating to measurable gains across the entire RPM band.

LS1 engine builders, performance shops, and dedicated gearheads benefit most from this head when pairing it with quality valve packages, as the bare casting arrives valve-ready, requiring only head machining, valve installation, and gasket-surface preparation before bolting to your block. This cylinder head provides the foundation for reliable, repeatable power gains, making it an excellent choice for those looking to enhance their engine's performance.