SBC R/M 1.600 Exhaust Valves 8mm AFR Heads

The SBC R/M 1.600 Exhaust Valves 8mm AFR Heads from MANLEY are designed for small-block Chevrolet engine builders who seek high-RPM performance and reliability. These valves are essential components for those working with AFR (Air Flow Research) cylinder heads, specifically tailored for both naturally aspirated and forced-induction applications.

Manufactured from premium stainless steel, these precision-engineered exhaust valves are built to withstand extreme combustion temperatures and mechanical stress cycles that standard valves cannot endure. The 1.600-inch head diameter ensures optimal flow characteristics and seat contact geometry, while the 8mm stem diameter is crucial for compatibility with AFR heads, preventing issues such as poor valve sealing and increased blowby.

Serious SBC engine builders, particularly those utilizing AFR heads with upgraded cam profiles or increased boost, will find these MANLEY valves indispensable for maintaining engine durability and performance. With precision tolerances, they guarantee a consistent fit and reliable sealing across all engine operating ranges, from idle to peak horsepower.