I might have to rethink what I want to do if I get this block. I was wanting to put a big inch - 420 or so - small block together, but with that bore size and short deck it looks like about 410" would be about the limit, and that with about a 5.7" rod. This block must be better suited to the short stroke cranks and 9500RPM! Might have to dig an old 5.83 R&P out of the shed...