Quote:
Originally Posted by 5ABI VT
Looks like ill be getting that nipple ! Planned to pull apart the shroud and rad for cleaning and tinkering with the thermostat soon. Btw does anyone make a 170 or something slightly cooler than the 180 factory thermostat?
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I think you can find cooler Thermostats down to 160 deg but my theory is the LT5 engine operates best with 180 deg Thermostat and both a 160 deg and 180 deg thermostat will be fully open at say 185 deg F.
The 160 deg just opens sooner but does not keep the engine cooler than a 180 deg thermostat once the 180 deg Thermostat is fully open. The 160 deg thermostat will keep the engine down to say 165 deg on cool days which is too cold I think. The cooler Thermostat will set the bottom temperature but does nothing to set the top temperature once both thermostats are fully open.