SBF 1.570 Exhaust Valve 8mm 5.030 OAL

The SBF 1.570 Exhaust Valve 8mm 5.030 OAL from AIR FLOW RESEARCH is a precision-engineered replacement exhaust valve designed specifically for Small Block Ford cylinder heads. Built for enthusiasts and professional engine builders who demand reliable, high-flow performance, this stainless steel valve serves as a critical component in any Small Block Ford rebuild, restoration, or performance upgrade. Whether you're refreshing a stock engine or maximizing airflow in a modified application, this exhaust valve ensures proper sealing and efficient scavenging of burnt gases from the combustion chamber.

Manufactured from premium stainless steel, the SBF 1.570 Exhaust Valve features a 1.570-inch head diameter optimized for Small Block Ford cylinder head ports, paired with an 8mm valve stem for compatibility with standard valve guides. At 5.030 inches in overall length, this valve integrates seamlessly with factory and aftermarket Small Block Ford heads. The stainless steel construction provides superior corrosion resistance and heat tolerance compared to standard iron valves, reducing thermal stress and extending service life in high-temperature exhaust environments. AIR FLOW RESEARCH's precision manufacturing ensures consistent valve seating geometry and minimal leakage, critical factors in maintaining combustion chamber efficiency and engine longevity.

This exhaust valve is ideal for Small Block Ford engine builds across 221, 255, 260, 289, and 302 cubic inch variants. Engine builders, restorers, and performance enthusiasts rely on this component for complete valve train assemblies, top-end refreshes, and high-mileage engine overhauls. Installation requires removal of the original valve and spring assembly; proper valve seat preparation and alignment ensure optimal sealing. Individual valve specification (this is a single exhaust valve) means buyers should verify their complete valve train requirements and order both intake and exhaust valves as needed for full cylinder head coverage.