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Reply to "Obsessing about thermostats and bypass"

The brass bypass plate is more or less permanently pressed into the engine block and it is doubtful that it has been removed. Easy to check, however

to determine if your current thermostat is correct go to the link you provided for flow cooler. They depict the correct high flow thermostat which must have the “hat” on the movable plunger that indexes with the bypass plate

note there are standard flow and high flow thermostats, the high flow is what is pictured at flow cooler.

The correct thermostat for our Cleveland engines is a high flow with the hat. Any other choices will most likely cause you cooling issues

Larry

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