OK to put temp senor in waterpump bypass line?

[brad-cam]

Waking up this thread to ask as related question I have. I have a 347 with Edelbrock AirGap manifold and Holley Sniper. Temp gauge sender is on right (passenger) side coolant port, no heater loop connected. Sniper EFI coolant sensor is on left (drivers) side coolant port. At idle both the gauge and Holley CTS are reading the same temp, however when driving on a 60 degree day, the Holley CTS runs about 20 degrees cooler than the gauge. I have a 180 degree thermostat. The gauge moves between 180-190, but the Holley CTS reads 150-152 (which means not warm enough to activate learn mode).

Could this be because of airflow through the cylinder 5 intake runner and it's proximity to the coolant sensor port? Or proximity to the cool coolant coming back from the radiator?

I'm going to swap the sensors side-to-side to see if the Holley CTS goes up to 180.

I just replaced the CTS with a new GM one after dealing with the well known "bad CTS" issue with the Holley-supplied one.

Thank you in advance for any guidance you have !!