Speedmaster 1-250-004-01 Chevy SBC 350 Ford SB 289 302 351W Head Build Kit Mechanical Roller Tappet

The Speedmaster 1-250-004-01 Head Build Kit is engineered for builders working on Chevy Small Block 350 and Ford Small Block 289, 302, and 351W engines. This comprehensive kit centers around mechanical roller tappets, delivering reduced valvetrain friction and improved throttle response compared to flat-tappet setups — making it a smart choice for performance street and racing applications.

Designed as a head build solution, this kit bundles the essential components needed to assemble or refresh your cylinder heads, helping streamline your build process and ensure component compatibility. Ideal for engine builders seeking a performance-oriented valvetrain upgrade on popular SBC and Ford small block platforms.