Choosing the right stroke for a 340

Garrett Ellison said
Stock stroke is great for factory iron X or J type heads if you want it to keep pulling at high rpm. If you're running aftermarket heads, I really like the 3.58 inch stroke, for 368 to 379 cubic inches depending on bore size.

Those are nice combos, but budget wise for a street build I would just build a 360 rather than drop the coin for those.