Valve Springs - HR Series (16) 1.555 Dual Valve Spring - Hot Rod Series - Dual Spring / Damper - 469 lb/in Spring Rate - 1.150 in Coil Bind - 1.555 in OD - Set of 16

Valve Spring - HR Series (1) Valve Spring - Hot Rod Series - Dual Spring / Damper - 431 ln/in Spring Rate - 1.125 in Coil Bind - 1.540 in ID - Each

Valve Springs - HR Series (16) Valve Spring - Hot Rod Series - Dual Spring - 417 lb/in Spring Rate - 0.910 in Coil Bind - 1.465 in OD - Set of 16

HR Valve Spring Kits - Dual GM LS Valve Spring Kit - Dual Spring - 392 lb/in Rate - 1.020 in Coil Bind - 1.304 in OD - Chromoly Retainer / Locks / Viton Seal / Steel Seat - GM LS-Series - Kit

Valve Springs - HR Series (16) Valve Spring - Hot Rod Series - Dual Spring - 392 lb/in Spring Rate - 1.020 in Coil Bind - 1.304 in OD - GM LS-Series - Set of 16

Valve Springs - HR Series (16) Valve Spring - Hot Rod Series - Dual Spring - 391 lb/in Spring Rate - 1.050 in Coil Bind - 1.459 in OD - Set of 16