SBC R/F 1.600 Exhaust Valves

The SBC R/F 1.600 Exhaust Valves from MANLEY represent a purpose-built solution for small block Chevy engine builders and performance enthusiasts seeking reliable, high-flow exhaust evacuation. These race-spec valves are engineered for applications where maximum breathing efficiency and durability under sustained load matter most. Whether you're assembling a competition engine, rebuilding a high-performance street application, or restoring a classic with modern internals, this eight-valve set delivers the precision engineering required for serious horsepower gains.

Each valve in this set features a 1.600-inch head diameter paired with a 0.342-inch valve stem, optimized for the SBC platform's port geometry and flow characteristics. The stainless steel construction provides exceptional corrosion resistance and thermal stability under the extreme temperatures of exhaust cycles, while the Race Flo design maximizes gas scavenging efficiency. At 5.165 inches in overall length, these valves are dimensioned to fit OEM-compatible valve seats and spring assemblies, making installation straightforward for experienced engine builders. The set includes eight valves, covering both cylinder banks and allowing for balanced flow across all exhaust ports.

Small block Chevy engines—from carbureted street motors to fuel-injected LS-based platforms—benefit significantly from upgraded exhaust valves that reduce backpressure and improve cylinder scavenging. This set is ideal for restorers, race teams, and tuners who understand that exhaust valve quality directly impacts combustion efficiency, fuel economy, and peak power delivery. Installation requires basic engine machine work and compatibility with your specific cylinder head casting; consult your engine builder or technical resource to confirm proper seat and guide dimensions. MANLEY's reputation for precision valve manufacturing ensures that each piece meets strict tolerances for concentricity and surface finish, critical for sealing integrity and long service life.