Hughes cam?

If You go from a run of the mill Magnum lobe to a fairly aggressive Mopar lobe, it could be worth 15-25hp on a 225 easy. But with the long pushrods, and requisite spring loads, stock components are out. Better pushrods are always a good idea on tall-deck Slantys anyways, but may not be in the original budget plan. Springs should always be so, it's a matter of degree & related cost, but expected. I'll try to link My post in Steve's spring shimming thread, about My project.
Post in thread '340 xhead spring shimming, height and pocket question(s)' 340 xhead spring shimming, height and pocket question(s)
I'm sure you're right in the ballpark. There's no question about it. But where "I" am with what "I" am doing I actually WANT a slower, lazier lobe. I want dead nuts reliability and no parts breakage due to stress caused by aggressive lobes. What I have now is a PERFECT example of that. I can drive this car every single day and not have to worry about anything being too aggressive causing stresses that might break things. I'll take a 15-25HP cut any day for that. Now, were I building something to blast down Reynolds Drag Strip, then things would be different.