Building a 408/416 stroker

Expect to spend upwards of $12,000+ to build a 550hp smallblock. At least in Canada. As mentioned earlier for the iron heads to flow and perform as well as the alloys, unless you want all stock look, you are better off going with some Eddys. I'm at $10,000 with my 416 so far and that is just for the tall block with eddy heads(no port work), scat forged bottom end, machine work, conical springs titanium retainers, comp roller cam, hughes 1.6 roller rockers, and custom push rods. I did consider a 440 for my Demon at first but found a date correct 340 block and wanted to have room to work on it in the engine bay as well as have a much lighter front end. Good luck with the build.