Cracked block....recommendations?

JB WELD!!

During the summer my buddy got a running 350 with nice cam and intake on it for $500, came with a camaro too. Anyway we did a nice burnout then pulled the motor. he was happy that it seemed like a great running motor supposedly recently rebuilt. Then we saw the block had a nice crack in it where coolant must have froze. my buddy was real bummed. I was like its just a stock 350 bottom end slap some jb weld on it and drive it! so we did. Its only been maybe 6-7 months but he drives this thing HARD. 6000 rpm most of the time hes behind the wheel. He has been through 3 sets of rear tires since the engine went in, 1 t5 trans as well. It also dropped a valve through a piston, put a new piston in and beat it harder. No issues so far with the jb weld.

I would clean it up really good, apply a generous amount of jb weld, give it plenty of time to cure. then drive it and take your sweet time building the other motor.