It is common knowledge that in order for a Hydraulic FT cam to survive during break-in you have to lower the spring pressure...especially for a BB. Does anybody have target #s for safe spring pressures to reduce the chance of losing a cam. I have a set of used springs that I am wanting to use but I don't want to go to low and bounce the valve and create another issue. Cam specs: Lunati Voodoo 268/276 duration and .542/.554 lift. The break-in spring I want to use is a old (well used) double with the inner spring removed. With the inner spring removed and installed at 1.88 spring height it reads 100# on the seat, at a lift of .550 the spring reads 235#. If I remove the damper the spring goes down to 90# on the seat and it takes 25# off at .550 lift.....so new rate over the nose is 210#. The recommended Lunati valve springs for this cam have a spring rate of 348 and would be 118# at 1.88 and at .550 lift the pressure would read about 310#. The engine is assembled with the single springs but I left the dampers installed. So do I pull the springs back out, remove the dampers so I can get the lowest possible pressure over the nose of the cam? BTW, the heads are peanut port 236 with stock valves.