Description:

: aftermarket Replacement Z28 Style Performance Valve Springs are made of Chrome Silicon.. Valve Spring Specification: Max Lift: .550", Type: Single W/ Damper Valve, Spring Diameter: 1.250", Installed Height: 110# @ 1.700", Open Load: 285# @ 1.210",. Retainer specification: Lock Angle: 7 degree, Material: 4140 chrome moly steel, heat treated. Lock Specification: Single, square, heat treated, enhance durability and superior reliability.