The PAC-1219 Spring Kit is a drop-in high performance spring kit for all OE LS cylinder heads and is rated for up to .625″ lift. This spring kit uses all OE hardware, including seats, retainers, and locks and is 100% drop-in. The PAC-1219s are an ovate beehive spring that has increased loads, rates and frequencies for more aggressive cams. This is a full set of 16 springs.
Type:Beehive Valve SpringsSpring Diameter Bottom (in.):1.307Spring Diameter Top (in.):1.072Spring I.D. Bottom (in.):0.885Spring I.D. Top (in.):0.650Max Lift (in.):0.625Load (lbs) @ Installed Height (in):135 @ 1.800Open Load (lbs) @ Open Height (in.):348 @ 1.175Coil Bind (in.):1.100Rate (lbs/in.sq):340Quantity:Sold as a set of 16
