I have heard similar, I wouldn't use a factory block, given the choice, anyway.
I would buy a Motown or Dart block in 8.7" deck height, and build a 289 size 3800+ cube engine, or step up to a 351w sized 9.5" deck block, and build a 427 - 460 cube motor. I wouldn't mess with a 8.2" block, or a standard ford block, given the choice.
I regret not doing it in mine, I bought the stroker first, and had to go very long stroke.
69mach1 has a 427cube small block, he probably has a 4.17" stroke, with 4" bore, but with aftermarket blocks, you can go 4.125" bore, and shorter stroke, and keep the revability AND cubes!