Change the thermostat to a 180* thermostat.
The 160* stays open basically all the time and never keeps the coolant in the radiator long enough to cool down.
If you checked for a head gasket blown and turned up negative and switching thermostats doesn't help,you should get a better(bigger) radiator.Actually you
should already have a bigger one,just like
Unit has said already.I'm using the stock radiator with blower,180* thermostat, with NO overheating problems,but every car is different and I plan to get a Fluidyne aluminum radiator this summer.
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Paxton Blown 87GT
ICQ#91504337