1966 FE 390 Running Hot

ford
engines
mustang

#1

Just put a rebuilt FE390 with 5K on it into my 1969 Mustang. It is running at about 230 degrees. Any suggestions to lower the temp. Timing?

Electronic Fan install?


#2

Was the radiator sized for the 390? Is this a rebuild of the factory installed engine?

If the radiator is not big enough for the engine’s needs, this will happen.


#3

The radiator I am using now came with the motor. Motor Trans & radiator came out of a 1968 project the previous owner never finished. It is a good sized radiator. It is not aluminum but it is very light. I have another radiator that is very heavy and I think it is original from 1969. My Mustang came with 428cj. I will measure the sizes of the radiators. Do you know how to tell how may cores a radiator has? 3 core 4 core does it matter?