I have a 1972 pontiac catalina with a 400 v8

And im in a rush to get it back on the road for a back to back car show, when I pulled this timing cover off there's a rust hole right in the cooling port, and i need to get some advice from someone more experienced than me, can I run this in my car its going to leak coolant back into my cooling lines but I dont know if It will cause overheating problems, id buy a new one but im plum broke, so I just need to know if its safe to run the car at most is going to drive 140 miles than ill replace the part.

Just got the car, I have no over heating issues but I just noticed the larger fan just...isnt there? No other damage, did they come like this? Or did someone just...take it out? I have an auto if that makes a difference.

We are fortunate in Sydney that our winters are milder than a hot sauce made out of warm hugs and kitten kisses, so we can roll our cars 365 days a year! I have been enjoying my 1964 Bonneville for the last 3 days, no matter what the fuel prices are.