318 stroker builds

I'm really only looking for enough head to support 400 fly wheel hp. I'm sure I can get them in the 230 cfm range with some work on the short turn and the bowls. If I have to have guide work I was going to go with 11/32 stems. 2.02's might be needed for the bigger cubic inches. Thanks

As you wish. In the case of a lot of cubes, you can't put enough head on top from OE iron and a larger valve will only improve everything.
A dead stock small valve head is enough on paper to support 400HP.