Specifications

• Part# PAC-1222X
• Name PAC-1222X RPM Series LS Aftermarket Cylinder Head Dual
• SKU PAC-1222X
• Alt Part# PAC-1222X-16
• Description RPM Series LS Aftermarket Cylinder Upgrade Dual Valve Spring
• Outside Diameter 1.280
• Outer Spring ID 0.925
• Middle Spring ID N/A
• Damper No
• Inner Spring ID 0.655
• Install Height 1.800
• Load at Installed Height 180
• Spring Open Height 1.100
• Spring Open Load 480
• Recommended Valve Lift 0.700
• Spring Rate (lbs/in) 425
• Coil Bind (max) 1.055