SBC 165cc I/E SS Head 67cc S/P 2.02/1.60 Bare

The SBC 165cc I/E SS Head 67cc S/P 2.02/1.60 Bare from DART is designed for serious small-block Chevrolet engine builders who are focused on maximizing flow and combustion efficiency in both naturally aspirated and moderately boosted applications. This bare cylinder head serves as a critical component for high-performance builds, including street-strip combinations and racing engines, where port velocity and chamber design are essential for optimizing horsepower and torque output.

With a 165cc intake port volume, this head is engineered to maintain sustained flow rates while ensuring velocity, which is vital for scavenging efficiency and throttle response below 6,500 RPM. The 67cc quench pad (squish area) is designed to minimize end-gas detonation by directing the fuel mixture towards the spark plug, facilitating faster and more complete combustion. This feature allows for the safe use of higher compression ratios or boost levels, making it suitable for a range of performance applications.

Engine builders will appreciate the flexibility offered by the bare configuration, which allows for customization of rocker arm ratio, valve spring pressure, and pushrod geometry to align with specific build intentions. The stainless steel exhaust seats enhance durability in high-heat environments, while the optimized 2.02-inch intake and 1.60-inch exhaust valve diameters are tailored for the small-block bolt pattern and gasket surface area. This head is an excellent choice for those looking to refresh a vintage 350 or construct a modern 383 stroker.