Solid Rollers on a Hydraulic Grind Cam

IDK if too aggressive for a roller, and I've never run that one but I see that for a flat flank roller it's pretty agressive
that said any agressive cam needs to have the rocker geometry right on
why
because if you do not the acceleration, instead of being in the middle of the opening and closing ranks is more toward the valve open area
meaning that the rocker is trying to accelerate the valve when the cam is trying to slow down to go over the nose
and on the closing side is using less leverage toward closed meaning the valve is shutting harder
second what YR said about the right oil- I mentioned that as a "usual suspect" above.
I'm reposting my .006 list later today and you can compare the HE275HL to other cams in that duration area
IDK if comp sells it for AMC or Magnums or other 1.6 rocker motors but I suspect they do- just set up your springs
and light valves and light steel or TI retainers always help
on the HR comp sells it as a kit and should be held to "merchantibility and fitness" standard
their method of setting geometry sucks Hell Racer Brown knew all about it 50 years ago, so did Jack Engle and Dick Jones and I suspect Winfield
stumble both cams take pro level installation
Physics and Geometry say that a max effort flat tappet cam translated to roller the roller flank has to go concave
I have no indication that that Comp HR is an inverse flank like Mike Jones,and Engle (who I suspect used U know who's profiles) and a couple of others
so with it's specification it has to get there some other way
One way is to stretch the seat duration- obviously this is fixed
another is to show not quite as big at .050 then ramp up between 100 and 200 and up (and then you have to unramp to get over the nose)
I'm sure the guys at comp know what the tradeoffs are.
It would be interesting to put both the HP and the HE-XL cams on the cam doc and see how they compare
but bottom line is neither is going to work right without the geometry being attended to
on the HR you want to run the biggest wheel you can and a bigger base circle would be nice but we can't easily change that
YR- I'll take another look at it - You are correct that the intensity shown in the lobe list does not look that intense but it depends on where they are putting the acceleration
hard to do it right off the seat like a FT
thanks