451 overheating, even when moving

Are those temperatures with the hood opened or closed? If they're with it open, close the hood and see if it gets worse, I'll bet it does. If so then try stuffing a couple of towels in between the hood and the rad support. Should be better.
It's with the hood off, but good idea, I'll give it a try as it's easy to pull it off and put it back on. Thanks!