TOM B said:
Under what circumstances are you overheating?
I have a Griffin alum radiator, 2 row with 1 inch tubes and a 1250 cfm puller fan. I overheat only when in stop and go traffic or when I am in a traffic jam. When I am on the highway, the needle is buried deep into the "C". It is only when I idle after coming off the freeway that my temps come up.
You are at about as high as you can go with respect to aftermarket fans so perhaps your problem lies elsewhere. Do you have the fan wired to a thermostat and switch and the switch is not functioning properly? How much juice is your fan taking and can your alt handle it? Were the head gaskets recently installed? I was told here on SN by others who know that head gaskets that are installed backwards can block water flow. How is your water pump?
I cannot think of any reason that a <450fwhp NA engine with an aluminum radiator should overheat at idle in <100degree weather unless some component in the cooling system is malfunctioning.
Is it possible you are confusing running hot with overheating? Are you using the factory temp gauge or sender? Is steam blowing out of her?
Is it possible you are confusing running hot with overheating? Are you using the factory temp gauge or sender? Is steam blowing out of her?
Overheating in traffic points to the fan IMO. This is totally up to you, but you can go to the local junk yard and find an older (early to mid 90's) Ford Taurus and buy that fan. Supposedly it'll push 4000+ cfm but make sure your alternator is up to the task. If you put this fan on there and it still overheats, then i'd look at the water pump.