1972RedNeck

My stock coolant temp gauge shows that my truck is getting hot when pulling heavy. I would like to know exactly what it's doing so I bought an aftermarket temp. gauge. The only problem is, I don't see any ports to put the sender in.

Where should I install the sender? I kinda want to leave the stock gauge hooked up.

comotionman

you should have an unused port on top of cyl head at t-stat housing. that's where I put mine.

93-12Smoke

Mine will get warm pulling a hill. Never got to the hot line but will get to the line just right of center on the gauge. If you are running a lot of timing that could cause a motor temp issue too. My understanding is the heat gets held in the motor longer before exiting out the exhaust.

1972RedNeck

I don't think that my truck is getting hot, but I want to know.

jimbo486

You probably would be better off reading coolant temps from the back of the head. Cylinders #5 and #6 get the hottest being the furthest away from the water pump. Thus, less flow/circulation of coolant.

1972RedNeck

Isn't the stock gauge sender back there?

jimbo486

Yes, it is. Driver side, rear corner of the head.