PAC Racing PAC-1280X RPM Series Beehive Valve Springs for 604 Crate Engines

1.282 Valve Springs - Ovate Beehive (16)
Valve Spring - RPM Series - Beehive Spring - 386 lb/in Spring Rate - 1.181 in Coil Bind - 1.077 in / 1.282 in OD - Set of 16

Type:Beehive Valve Springs
Spring Diameter Bottom (in.):1.282
Spring Diameter Top (in.):1.077
Spring I.D. Bottom (in.):0.860
Spring I.D. Top (in.):0.655
Max Lift (in.):0.500
Load (lbs) @ Installed Height (in):92 @ 1.800
Open Load (lbs) @ Open Height (in):285 @ 1.300
Coil Bind (in.):1.181
Rate (lbs/in.sq):386
Notes:GM 604 Crate Engine