Well i have a 235 chevy in a 58 chevy truck. I have had the head rebuilt, new water pump and a desert edition radiator and it sometimes still overheats. It has the origional 3 speed. It was fine when i was driving normaly and it was fine but it overheated when i have to stop and go and at hiway speed in hot wheater. What could this be.
the temp guage is not were it normaly is. When I are driving morely crusing it is alittle past the cold. But today I was on the hiway and it was alittle past the middle almost at hot. Then i went of the hiway and it colled down alttle but then i got into stop and got traffic and it got hot again. There was no boiling water but the guage just said it was hoter than normal.
If you have changed that much of the system, it may have a new "normal". Install a gauge with numbers or use a probe thermometer in the cooling fins of the radiator close to the inlet hose to see what's really going on before you say it's too hot.
my 54 chevy bel-air does that, i just shut it off some times at a red light, and as soon as i get going again the temp comes back down
I put a flex fan blade on my stove bolt. You might want to power spray your radiator to clean out the cooties,and straighten out the fins if you have any dings in them.
Sounds to me you may have some weird happenings in the temp gauge or it's sending unit. If the gauge operates off a voltage regulator (like Furds do) then the voltage regulator may be sticking and making the temp gauge look like the engine if overheating. (Usually makes the gas and oil pressure go up too) I would see about getting an independent gauge installed and drive till the one gauge goes up. If the other gauge goes up too then u may have a heating problem.
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