Reply to "temp gauge"

The "stock" sender location in the tank is useless as far as getting real temp info on your engine, as you seem to have found. Reroute the sender to the front of the engine block like every other OHV Ford engine ever built and start from there. There's a lot of turbulence in the remote surge tank (note the name of this part) as well as varying water levels and a huge reading-delay as the thermostat cycles open & closed. Once the sender is moved to a rational position, I suggest calibrating the new gauge, which should be much closer to correct than the myriad combinations of stock parts that are possible. Note- do NOT position the sender in the water pump either; this unused port has cavitation present and bubbles don't read true temperature. Place it in the block, horizonally, just under the thermostat. The removed block plug can be used to fill the hole in the surge tank, making this a zero-cost change.