Ok the reason I run a 160 thermo is very simple, the 351C in the pantera engine compartment has no real air to circulate around the motor. The small block & big block Fords run very well bewtween 180-195 %, when I had the 180 thermostat the motor temp would run over 200 % usually @ 215% which is way too hot.
The temp of the radiator was running (top) was about 170%, (bottom) was about 188 %, but then the motor was @ 215%.
I had many Fords over my lifetime Race engine + stockers) and they (for me) run exceptionally well 175-195% and back in the day thats what they recommended. Im running a correct thermo for the cleveland, also my Boss 302 has 160% thermo and runs @ not hotter than 190% on days that are 100% + here, it usually runs @ 185%.
If the motors run too hot then you start to have internal problems as well pre-ignition.
So hope you understand why I run the 160% instead of 180% thermostat
thx again Mike #7042
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