I'm currently collecting parts to put a 470 together next spring. I plan on building a low deck with 6.700 rods a 1.30 ch piston and a 3.915 stroke crank. This should give me a little room to have the block decked and get close to a zero deck. I'm going to build mine as close as I can to Andy Fs' 550hp build except with a hydraulic roller. Hope this helps a bit.