SBC S/M 1.940in Intake Valve

The SBC S/M 1.940in Intake Valve is a precision engineered component purpose-built for small-block Chevrolet engines requiring OEM or performance-grade replacement valvetrain hardware. This intake valve is essential for serious engine builders, mechanics, and performance enthusiasts who demand reliability in high-RPM or competition applications. Whether you're rebuilding a stock engine or upgrading a modified platform, this valve ensures proper air-fuel mixture delivery and maintains critical combustion chamber sealing under demanding operating conditions.

Engineered to exacting tolerances, the SBC S/M 1.940-inch intake valve features a head diameter optimized for small-block Chevrolet cylinder head porting and flow characteristics. The 1.940-inch specification refers to the valve head diameter—a critical measurement that determines sealing surface area, flow efficiency, and compatibility with your specific cylinder head casting. Precision valve stem grinding and hardened construction ensure consistent performance across extended duty cycles, preventing flutter, micro-movement, and premature wear that compromise engine efficiency and reliability. The compact 0.32 lb weight reflects its precision machining and material composition, designed for rapid valve actuation and reduced valvetrain inertia.

This intake valve is ideal for SBC platform restorers, professional engine builders, and transmission shops performing complete top-end rebuilds or performance upgrades. Compatibility is critical—confirm your cylinder head casting number and valve seat angle before ordering to ensure proper fit and sealing. Installation requires precision valve seat work, spring pressure verification, and proper pushrod or rocker arm geometry adjustment; professional installation is strongly recommended for optimal engine performance and longevity.