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This Edelbrock 1.66" exhaust valve (single) for specified Pontiac heads is a one-piece, swirl-polished stainless steel valve with a hardened tip and undercut stem for increased flow. It is manufactured .120" longer than stock with an overall length of 5.230" and fits the listed Edelbrock cylinder head references, providing a longer valve option where additional length is specified.
Edelbrock 1- Pont Perf RPM 60599 Exh Valve 1 660 X 5 230
