PAC Racing Springs PAC-1231X - Beehive RPM Series Valve Spring Upgrade for GT500 and Cobra Jet -Exhaust

Part#: PAC-1231X Name: PAC-1231X RPM Series Ford GT500 & Cobra Jet Exhaust Ovate Wire Beehive SKU: PAC-1231X Alt Part#: PAC-1231X-16 Description: Beehive RPM Series Valve Spring Upgrade for GT500 and Cobra Jet -Exhaust OD Large End: 1.083 ID Large End: 0.720 ID Small End: 0.636 Install Height: 1.575 Load at Installed Height: 120 Spring Open Height: 1.025 Spring Open Load: 280 Recommended Valve Lift: 0.550 Spring Rate (lbs/in): 291.000 Mass (grams): 41.40 Coil Bind (max): 0.952