Power limits for LA small blocks?

My 410 stroker was somewhere north of 500hp (probably 550 ish, but never dynoed). Ran great for 7 years, mid 10's, raced a LOT, no real issues....then broke a rod out of the blue which destroyed the block. The bearings (except for the one on the broken rod) all looked great. It may be ill advised, but I'm rebuilding for about 600hp, and my new ET goal will be low 10's (10.3-10.0).