Cam my 416

I have never seen a 4" crank motor that was soft on bottom, even with big cams.

Truth. I'm at 500ft/lbs by 4000rpm. 255/263 @ .050" and .643lift on both. Solid roller. Pulls to 7000rpm.

To the OP, you'll be happy with your choice. Definitely get the heads checked out. If you're an auto car I would be looking at a converter that will stall to 3k, will make launches more fun and not slip enough to annoy you out cruising.