And while everything's off the front of your engine, now's the time to relocate the temp sender to the correct location in the block. Remove the 1/4" pipe plug from the block just above the water pump and mount your temp sender there. You'll get more accurate temperature readings. And put a radiator petcock into the temp sender mounting bung in the coolant tank where it was originally mounted. Then, if you need to change a water pump or thermostat in the future, you merely open that petcock to drain the top half of your cooling system.
Cheers!
Garth
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