Valve spring limitations vs Cam selection

JoePole1 said

Thanks Mark. I am leaning towards an Oregon regrind that was recommended by a couple of members using them and the cost savings. Plus I have a good blank. I do understand that the Lunati and Howards have MoPar friendly lobes. I also see notations on the Oregon grind sheet with cam profiles that they copy (ie XR270HR) in some cases.

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Yes, the cost factor is something I figured you were looking at. Nothing wrong with that.

Looking at the Oregon grind HR sheet online (which is pretty od so may not have all their grinds), I can see the 1393 grind which is pretty close in terms of ICA (56* installed as in their listing), and the valve lift at .500". The 'intensity' based on the duration difference in Advertised duration - .050" duration alone (which is not a 100% sure way to look at it), looks almost as strong as Howards or Voodoo. This Oregon grind is 54* while a comparable Voodoo is 51*. What I cannot tell you is what these do at .100" or .200"; Howard's lobe list will show some of that but not Oregon and I have never seen a Lunati lobe list.

Now having said that, I have never been unhappy with a milder intensity cam like the standard Cranes. But I don't go for all-out maximal HP. So that Oregon grind may suit you just fine. And I have not looked back a springs and such with these; the less intense, the less spring is needed in general.

Do you have any Oregon specs or a grind number to share? As said, a lot of their online info looks old.