Sniper Coolant Temperature Probe Location?

[farm truck]

Stock location for the dash gauge temp sensor is in the drivers side head where you found it, and it should be a green wire. It all looks correct. Some older iron heads had a 3/8” tapped hole, but newer 350 engines are usually 1/2”. My aftermarket aluminum heads have a 3/8” hole.

There is an identical tapped hole in the passenger side head and it works fine for a temp sensor. Its farther away from the thermostat, so it might be a little different temp than the other head, but that is usually not critical.

FlowKooler 330-195 FlowKooler Robertshaw Series High Performance Thermostats | Summit Racing

Free Shipping - FlowKooler Robertshaw Series High Performance Thermostats with qualifying orders of $109. Shop Thermostats, Mechanical at Summit Racing.

www.summitracing.com

I am using a 195 degree high flow thermostat (Robert Shaw, IIRC) and it works very well to keep the engine at about 190-195. It already has a drilled bypass hole, and it’s designed to provide a larger opening to help flow. I am also using a high flow cast iron water pump.

Thermostat arrived yesterday! Thank you!

 

[bluex]

Is the pass side fitting located towards the cab side of the head? I think mine is hiding, if so.

Yes it will be back by the cab between the last two cylinders.

 

[farm truck]

Boy am I a dum arse, or what?

All I need to do is to swap sensor locations; dash temp sensor from the current head location to the water neck port & sniper temp sensor to the head port. I don't care if the dash temp is not as accurate.

DUH is me!