Bare with me as I'm still learning... So my current comp springs are installed at 1.8 which is a seat pressure of 121#... Now the springs the cam card suggested should be installed at 1.65 and a seat pressure of 120#.
OK, the comp springs have 120#s @ 1.75" When installed at 1.8" and a spring rate of 370 you lose 18.5#s, so now you are at 101.5 #s. Of course it is not a perfect world , so they could be less. You cannot shim these springs to gain seat pressure because you will run into coil bind. Listen to PHR on the cam and springs, and B3RE about the geometry
