


The Edelbrock #5806 Sure Seat Valve Spring for Ford 390-428 FE V8 1961-1976 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus, Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance, use only the springs recommended by Edelbrock for each camshaft application.
Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.; Edelbrock products offer improved performance and aesthetics for a broad array of vehicles and engines. 'Proven performance' is the philosophy by which Edelbrock was founded and it continues to this day with the highest standards for performance and quality. Edelbrock core products are engineered manufactured and tested in the USA to ensure the best quality possible. This is further backed by some of the best warranties in the industry and a highly qualified technical support staff.
The Edelbrock #5806 Sure Seat Valve Spring for Ford 390-428 FE V8 1961-1976 O.E Cast iron cylinder heads are made of highest quality spring wire and precision wound to close tolerances our Sure Seat Valve Spring sets are for use on original equipment heads when installing Edelbrock Performer-Plus Performer RPM and Torker-Plus camshafts. These are the same high-performance springs used on Edelbrock Performer and RPM cylinder heads. For camshaft warranty compliance use only the springs recommended by Edelbrock for each camshaft application.
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