Assuming all you have on hand is a rebuildable 440 core, the complete 6-pak set up, and the correct tin and exhaust manifolds....... To buy the parts and have the machine work done, engine assembled and dynoed by a reputable builder...... I'd say it's easily in the $10,000 range.
Assemble it yourself, no dyno, maybe a flat tappet instead of a roller....... Knock a couple grand off.

This is assuming you're building a FAST legal motor and are pretty set on your mid-11 second goal.

You'll still need a good exhaust system, fuel system, decent trans, converter and gears.