Been gone a while guys but I am back but unfortunately with problems and worry. I drove my 67 around and before I knew it my temp was skyhigh and I pulled over to see what was going on and my 289 started throwing up it's coolant from the overflow hose and from under the Cap. So I let it cool then I hurried the old girl home. But as I arrived the poor girl started knocking and clanking like no other. I hit get parked and shut her off and she continued to run clacking and clanking and rattling away I had to cycle the key a few times to get her to go down. But the knocking was that of nightmares. The overheating I found was caused by the shop using a gob of gasket sealant on the thermostat gasket that then got into her thermostat clogging the poor girl up. I haven't started her since worried about the clanking noise. What was it and is she going to be ok without another rebuild?