Overheating during cam break in

yeah, I think Id go for more timing at idle. 14 or 15. I have used one of those big squirrel cage fans that they use in houses for heating systems. Got it at an auction. Blows tons of air. Still my small block overheated during the break in. Sprayed water on rad, messy but it worked. It's hard to break in an engine, set the timing and carb all at the same time. I got it close and just went for a drive. Got broke in real nice. DON"T FORGET to check the oil level during the break in. Fresh engines, just machined and hot tanked will soak up alot of oil. {into the pores?? IDK} Good luck, I know 440's tend to run warm anyway.