Upgrade your engine's performance with the 1.635 Dia. Inter-Fit Valve Springs by COMP CAMS. These Pacaloy springs are designed for precision and durability, providing a spring rate of 640 lb/in and a coil bind of 1.100 inches. This set of 16 valve...

Valve Spring - Dual Spring - 637.5 lb/in Spring Rate - 1.100 in Coil Bind - 1.546 in OD - Set of 16

Valve Spring - Dual Spring / Damper - 677 lb/in Spring Rate - 1.090 in Coil Bind - 1.638 in OD - Set of 16

Upgrade your engine with COMP CAMS 1.638 H11 Dual Valve Springs for unmatched performance and durability. These high-quality valve springs feature a dual-spring design with a damper for smooth valve control, perfect for racing and high-horsepower...

Valve Spring - NexTek - Dual Spring - 647 lb/in Spring Rate - 1.070 in Coil Bind - 1.640 in OD - Each

Valve Spring - NexTek - Dual Spring - 647 lb/in Spring Rate - 1.070 in Coil Bind - 1.640 in OD - Set of 16