Ferrea 1.650in to 1.600in .885/1.20/1.65 OD .645/.885/1.20 ID Triple Spring Valve Spring - Set of 16

The Ferrea Racing S10002 valve springs are triple springs made from Pacalloy material, designed for roller applications. They feature an outside diameter range of 0.885" to 1.650" and an inside diameter range of 0.640" to 1.200". These springs offer a seat pressure of 285 lbs at 2.000" and an open pressure of 790 lbs at 1.250", with a rate inch of 680 lbs. They have a coil bind of 1.140" and a maximum net lift of 0.800". Sold individually, these valve springs are engineered for high-performance engine builds where precise valve control is critical. They are compatible with specific engine and cylinder head dimensions for Chevrolet, Chrysler, and Ford applications.