SBC R/M 1.940in Intake Valves

The Manley SBC R/M 1.940in Intake Valves are purpose-built high-performance engine components engineered for small-block Chevy racing and rebuilds where reliability and precision meet uncompromising quality. This set of eight stainless-steel intake valves represents the standard for competitive engine builders, performance technicians, and enthusiasts who demand OEM-equivalent durability combined with race-proven metallurgy. Whether you're restoring a vintage muscle car, building a street-performance engine, or preparing a competition powerplant, these valves deliver the dimensional accuracy and material integrity required for sustained power delivery and longevity.

Manley's Race Master line specifies a 1.940-inch head diameter with a 0.342-inch valve stem and 4.951-inch overall length—dimensions engineered to maximize flow efficiency while maintaining the structural integrity demanded in high-RPM small-block applications. The stainless-steel construction resists thermal cycling stress and corrosion, critical factors in engines subjected to sustained high-temperature, high-pressure conditions. Each valve in this eight-piece set is precision-manufactured to exacting tolerances, ensuring consistent seating geometry and repeatability across all eight cylinders for balanced combustion and predictable performance across the RPM band.

These Manley intake valves are the preferred choice for small-block Chevy engine rebuilds, from 262 to 400 cubic-inch platforms, and are essential components in any serious performance or racing build. Installation requires precise valve seat machining and spring selection matched to your specific camshaft and intended application; consultation with your engine builder or performance technician is recommended to confirm compatibility with your valve springs and head specifications. For buyers seeking OEM-quality replacement valves or performance upgrades, this complete eight-valve set eliminates the need for individual purchases and ensures matching materials and dimensions across all intake positions.