It looks like I should be looking for a seat pressure of 150-160 lbs. for the cam I have. According to the spec sheet that came with my heads, the pre-installed springs are rated at 120 lbs. I looked on Summit's website at inner springs and they sell Comp inners in various pressures, heights, diameters, etc. What I noticed though is that all of the installed heights are less than the installed height of the springs on my heads (1.88") except for one that is 1.90" tall. Should the inner spring be the same height as the outer or are the inners typically a little shorter than the outers? How do I go about choosing an inner that is the correct height?
