525" Lift ECOTEC Racing, Drop In, Dual Valve Springs: Part# ET240 240# at Max lift (.540"), Drop In Racing Valve Springs, using stock retainers and without any Machining required. These springs are compatible with all Ecotec 2.0, 2.2, 2.4 liter Ecotec engines. Specs: Part Type: Ecotec Drop-In Racing Valve Springs. Compatible with all Ecotec 2.0, 2.2, 2.4 liter Ecotec engines Type: Dual Damper Included: No Outer Spring Out Side Diameter (O.D.): 1.010" Outer Spring In Side Diameter (I.D.): .740" Inner Spring Out Side Diameter (O.D.): .723" Inner Spring In Side Diameter (I.D.): .540" Seat Pressure: 79 @ 1.320" Open Pressure: 240 @ .775" Spring Rate/Inch: 250 Maximum Suggested Lift: .525" Coil Bind: .785" Electro Polished: No Nitrided: No Suggested Steel Retainers: VSRET252-B Manufacturer: Racing Engine Technologies Manufacturer's Part Number: ET240 Packaged Weight: 3.0 Ibs. Warranty: Race Application, No warranty expressed or implied

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