The Edelbrock #9318 1.68" exhaust valve is a one-piece, swirl-polished stainless steel valve with a hardened tip and undercut stem for increased flow. Overall length is 4.780". Sold as a set of eight, these valves are specified to fit Edelbrock head #60519 for Olds applications requiring a matched exhaust valve set.
Edelbrock 8 Exhaust Valves - 1 68 Olds 60519 Heads