Max Valve Spring Pressure for Reground Camshaft

mopowers said
That's what I thought too. The cam grinder said that original cores weren't made from the best materials though and that the springs he recommends are seemingly nothing more than a comp 901. That seems a pretty strange for the hyd roller I'm looking at considering all other cam makers are calling for something in the 120/355 range for similar grinds.

Ken Heard at Oregon says the stock Chrysler cores were hardened almost slam to the center of the core. He said they have never ground through the hardness. I guess if you're getting into solid roller territory, it's best to go with a billet core anyway.