This listing is for sixteen (16) performance valve springs (single spring with damper), sixteen (16) chrome-moly valve spring retainers, and (32) 7-degree hardened valve keepers/locks compatible with Ford 289 302 351W. 

For camshaft up to .528 lift

• Spring Type: Single spring with damper, Outside Diameter: 1.460", Inside Diameter: 1.060", 
• Seat Load: 115-lbs. at 1.820", Open Load: 245-lbs. at 1.320", 
• Coil Bind: 1.230". 
• Retainers: Outside Diameter: 1.400", 1st Step Diameter: 1.060", 2nd Step Diameter: .690", 
•  Material: 4140 chrome-moly Locks: 
• Lock Angle: 7-degree, Valve Stem Size: 11/32"
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