Dyno'd the Magnum.

Cam specs sound good. Are you sure the stock magnum pistons are hypers?? I was considering a 150 shot with an MSD retard of 6 degrees but now I'm hesitant because the pistons are hypers and I have also heard that hypers wont hold up nitrous because they are too brittle???Is that it that, hypers are too brittle or what ????