340 build question

I'm actually LOOKING for a cast crank slant 6. Chrysler used nodular cast iron and not regular grey cast iron. Nodular iron is much stronger and not as brittle as grey cast iron. It has a little "give" to it, similar to a forged crank, plus, it's lighter. But do what you want. This is your build. If you think you're gonna push the boundaries of a cast crank, then go forged. But Ibet probably 90% of street builds out there with forged cranks could have gone with cast. ....and if you decide cast, don't get one of those new "cast steel" cranks. Stick with the stock Chrysler crank. They're a much better piece, IMO, because they were made with good old American metallurgy.