Specifications

• Part# PAC-1236X
• Name PAC-1236X RPM Series LS Aftermarket Cylinder Head Upgrade Dual
• SKU PAC-1236X
• Alt Part# PAC-1236X-16
• Description RPM Series LS Dual Valve Spring Aftermarket Cylinder Upgrade
• Outside Diameter 1.310
• Outer Spring ID 0.925
• Middle Spring ID N/A
• Damper No
• Inner Spring ID 0.665
• Install Height 1.800
• Load at Installed Height 156
• Spring Open Height 1.150
• Spring Open Load 495
• Recommended Valve Lift 0.650
• Spring Rate (lbs/in) 520
• Coil Bind (max) 1.080