400 builds-anybody?? NON STROKER!

Basically the 440/400 are the same bore. So deciding which stroke to run 400-540 cid will determine where your powerband will be.
Trick flow topend offers 600-700 + hp. Going 400 you gonna need to spin it fairly high and gear it deep with a high stall. Where a 540 is gonna bring down to a more streetable package leaving 470 ish engines in between.
Even though a 400 is a decent size engine, but since you got to buy custom pistons anyways it hard not to justify putting in a 440 crank for the extra cost. Or just build a 440, now if buying an aftermarket crank its definitely hard not to justify building a 440 stroker to 500-540 cid since its the same cost.