Hey guys..I have a Chrysler 360 fresh water cooled engine overheating. Just changed the manifolds risers and elbows. Start it up, no leaks but it gets hot real quick up to 220 in seconds. Shut it off real quick, start pulling some coolant hoses to see if is airlocked, sure enough it seemed to be. Seems like all coolant hoses have antifreeze. I Got what seemed to be all the air thru the system, still gets hot, 160 at idle and it keeps going. Here's the odd part. When I give it some more rpms the temp actually goes down quite a bit, and then will go back up again. Nothing is clogged on the raw water side as far as I know, bottom is clean, new hoses to the raw water pump. New impeller last year. Before I changed the manifolds it ran 170 at 2500 rpm. Saw a little steam coming from under each side of both manifolds when I kicked the rpms up. Risers and elbows are cool so it appears the raw water side is good. Mechanic took a quick look said he thinks it's still airlocked, but didn't have much time to look at it as he was going on vacation. Now I can't go on vacation...help!