SBC S/F 1.940in Intake Valves

The SBC S/F 1.940in Intake Valves are precision-engineered replacement intake valves designed specifically for small-block Chevy engines seeking stock or mild performance upgrades. This set of eight stainless steel valves addresses wear, corrosion, and heat damage in high-mileage or modified SBC powerplants. Whether you're rebuilding a classic muscle car, restoring a street rod, or refreshing an engine for improved reliability, these intake valves deliver OEM-comparable fit and durability without premium pricing.

Manufactured from stainless steel, these valves feature a 1.940-inch head diameter and a 0.342-inch valve stem that maintains tight tolerances in standard SBC cylinder heads. At 4.911 inches in total length, they integrate seamlessly with stock or ported heads without requiring custom machine work. The Street Flo designation indicates these valves are optimized for street-driven applications—balancing flow efficiency with operational stability across normal RPM ranges. Stainless construction resists oxidation and thermal stress, extending service life in high-temperature combustion environments compared to standard carbon steel alternatives.

Mechanics and engine builders working on small-block Chevy platforms—whether 283, 305, 327, 350, or 400 cubic-inch variants—will find these valves essential for top-end rebuilds, head reconditioning, or performance maintenance. Installation requires standard valve spring compressors and basic machine shop competency. Always verify head specifications before ordering, as slight variations exist across year and casting numbers. This complete eight-valve set eliminates the need for mixed sourcing and ensures uniform valve performance across all cylinders.