Yeah I think they are a great spring, only issue is that they are little on the expensive side. I don't fully understand the difference between 150 in the catalog and 205 when measured. I think it is due to the step on the locator and the retainer but Comp should know about that.
Comp does say that conical springs can be run with much less pressure than normal straight springs but they don't provide any more guidance than that. The engineer I talked to said these springs would work just fine with this cam profile but he didn't say why he felt that way. I know they have done a lot of Spintron testing with these conical springs so I'm guessing that someone knows what works and what doesn't but they didn't pass that knowledge on to me!
Still a lot of uncertainty and doubts with both beehive and conical springs. I have seen these new era springs being used on LS platforms making north of 700 horsepower with ZERO issues. I hope the springs perform well for you in that if they exceed your expectations some of the uncertainty and doubts will slowly disappear because these new spring designs are way better than traditional dual springs.
