Guys with Crane Cams Book- Need Help

Here You Go!
O.D. I.D. Damper Seat Press. Open Press. Coil Bind Rate (lbs/in.) Max Net Lift Application Part No
1.500 1.086 Yes 113 lbs @ 1.600 280 @ 1.150 1.000 412 lbs/in. 0.565 SB Chrysler; Street/Strip; RV/Truck Power 99835-16
According to the Wallace spring calculator if the installed height is set at 1.60, the spring pressure at .480 lift will be 291 pounds
Thanks!