Cam break in during cold weather?

don't worry about the cold weather. i just broke my SFT cam in on Friday with -35*C with windchills at -42*C.

i made a test run stand to break cam in and check for leaks. i poured hot hot water into rad and turned on the electric water pump. after a few seconds the heads were warm and ready to fire up. i opened the garage door and rolled it out. fired it up and broke the cam in.