Specifications

• Part# PAC-1227
• Name PAC-1227 Circle Track Dual w/Damper
• SKU PAC-1227
• Alt Part# PAC-1227-16
• Description Circle Track 1200 Series Valve Spring 1.539 Dual & Damper
• Outside Diameter 1.539
• Outer Spring ID 1.125
• Middle Spring ID N/A
• Damper Yes
• Inner Spring ID 0.731
• Install Height 1.950
• Load at Installed Height 200
• Spring Open Height 1.250
• Spring Open Load 550
• Recommended Valve Lift 0.700
• Spring Rate (lbs/in) 500
• Coil Bind (max) 1.130