How can i make 700 horse from a 410 stroker

The first thing you should absolutely plan on is an aftermarket block and a set of heads that make use of offset rocker arms. Once you get these items your goal will be a lot easier.

I can sell you a balanced Molnar rotating assembly, but you need a solid foundation (block) and the correct heads, or your wasting money from the start if you truly want a reliable

700 HP that will last.

Tom