Does abyone know what kind of horse power you would get from a 416 stroker kit in a 340 with some head work to a set of "X" heads and a mild hydralic cam and a set of TTI headers?

It will all boil down to the entire combo.

Figure a mild to moderate 915 casting port job, dual plane intake, a 750ish carb, and a hyd. street grind cam, probably around 400-425HP 470-490lbs torque.

WAY more porting, a single plane, Holley 950, stout solid or roller cam, more like 475-525HP 475-510TQ.

WAG numbers but should give you an idea of what you'll be getting, The big crank makes a small block car drive like a big block car!