Spec: 30% more coolant flow, eliminating the need to use a cooler temperature thermostat. Conventional style thermostat with jiggle pin. FACTORY THERMOSTAT OPEN: 91 DEGREES. THIS THERMOSTAT OPEN: 71 DEGREES.
I'm using the thermostat in a Ford Cleveland 351 running on straight LPG. The motor now runs 10 degrees C cooler than with the standard thermostat, which is a positive in hot Queensland weather.