SBC R/F 1.560in Exhaust Valves

The SBC R/F 1.560in Exhaust Valves from MANLEY are precision-engineered components designed for small-block Chevrolet builders seeking reliable, high-flow exhaust evacuation in both street and competition applications. These valves are essential for anyone rebuilding or modifying an SBC head to maximize breathing efficiency and power output. Whether you're restoring a classic muscle car or tuning a street rod, quality exhaust valves directly impact combustion scavenging and overall engine performance.

Manufactured from premium stainless steel, the SBC R/F 1.560in exhaust valves feature a 1.560-inch head diameter optimized for excellent flow characteristics and thermal durability under sustained high-RPM operation. The design enhances gas evacuation patterns and reduces reversion, which is critical for engines with aggressive cam profiles. These valves are engineered to fit modern SBC cylinder heads with standard valve seats, ensuring consistent sealing and longevity.

Mechanics and engine builders working on SBC platforms—from 350 blocks to 427 strokers—rely on MANLEY valves for their predictable performance and durability across various applications. Proper installation requires valve seat machining and correct installed height measurement to ensure optimal performance. These valves are suitable for both naturally aspirated and turbocharged applications, making them a versatile choice for engine builders.