I am new to this board, so holler if I should be posting this to another spot or if the info is out there.

I have a '68 Chevy Pick-up with a 350 in it. It was running fine, until the power steering pump bracket came loose and the fan hit the pump, sending fan shrapnel through the hood. That is fixed, and I replaced the brackets with a '66 Corvette kit so that the pulleys now line up.

After the "event", I also had a leak out the back of the water pump, so I put in a new aluminum one from JEGS.

Now, I have a new problem. The truck gets up to temp, and then overheats, without the thermostat opening. Then, when the gauge says the truck is overheated hot, the thermostat opens, and it cools down. But then, the top hose collapses on itself, and the truck heats back up.

I plan to put in a new thermostat tonight, but I am wondering if that is going to solve the problem with the collapsed hose?

Also noticed the air cleaner has oil in it - can you do engine damage from just a few overheats?

Thanks for any info.
Dan