Edelbrock 1.66" exhaust valves (set of eight) for Ford Perf RPM FE applications are one-piece, swirl-polished stainless steel valves with hardened tips and 3/8" undercut stems to promote increased flow. These valves measure an overall length of 5.450" and are specified to fit the listed FE-series Edelbrock cylinder heads, providing a complete exhaust valve set for compatible Ford FE rebuilds.
Edelbrock 8- Ford Perf RPM FE Exh Valves 1 660 X 5 230