440 stroker K&B crank

I would have it carefully x-rayed first. Any visible crack is only a small part of the total crack, and if it breaks, it can take a lot with it. A friend got a killer deal on a fueler carnk like that. Teh thought being if it took 6K hp, it can take under 1000 forever. It make 870 ont he dyno, and when it did come apart ont he cars second full pass, it took the right corner off the block, brock the Indy head, took the right tire off it's rim, and ran the car into the wall. He was fine. Car was repairable. but that crank deal cost him over $3K in chassis, body, and paint, plus a new engine from the block up.