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I have a bone stock 1963 Chrysler 300 with a 383 and a 22" radiator. I went for a small cruise (20 minutes) and went to put her away and felt it was running abit hot. The dummy gauge did not show excessive heat but when I shot it with the gun this is what I found...Any help is appreciated...



My guess is lean fuel mixture, especially on old original car like that.

It never had shroud when new? If no shroud from the factory then I don't think that is your problem?

If your running today's pump gas(93 is full of ethanol, that's how they get it to 93 octane now), then I know it's leaner than with straight gas with no ethanol. The 10% ethanol does not have the same BTUs as gasoline and that makes the overall mixture lean on our old cars with carburetors. Lean makes additional heat.

If you don't want to mess with the jetting yet, then find some straight gas to try. It don't matter what kind of straight gas. Most times 110 leaded race gas is easiest to find and won't hurt a thing to run it straight on top of a small amount of unleaded ethanol.

Marinas or nearby water seem to have straight gas for sale FYI.