I was always told that boost motors need swept volume (stroke) for most power. Hellcat was set-up for overbuilt-durability, you'll see guys putting stroker cranks in them soon enough though. I'd be investigating the 400" boosted BES 3rd gens over the stock stuff
That applies for both NA and boosted because you are getting more displacement. The problem, as stated previously by another user, is the fact that you run into higher rod angles with the lower rod ratio you create. That, along with the higher cylinder pressures, can cause large side loading on the pistons and cylinder walls. For 5.7 and 6.1 blocks (which are already notorious for cracking because of thin cylinder walls) this should be taken seriously. On top of that, you reduce dell time and increase piston speed with a stroker...
