Classic Instruments Temperature Sensor 12mm

[lutronjim]

Anybody have any info on this sensor?
https://shop.classicinstruments.com/sn12mm

Thanks

[kglowacky]

Yes. I am currently running one on my 2001 LS1. Its a direct fit and screws right in the rear of the pass side head. I am running it to factory gauges of my 78 C10 Silverado. Not sure if it is exact in temp readings but it will run at 1/2 gauge and at 3/4 gauge which is 207 (based on my PCM setup). The fans turn on and it cools down to 1/2 and the fans shut off. So for me it works fine as a indicator of I am in a safe running temp.

[lutronjim]

Do you happen to know if the 78 temp gauge has the same ohms range as 70?

[kglowacky]

I don't know. All I can tell you is the 3/4 position is around 207 temp. based on how my computer is set to turn on the fans

[A1971Blazer]

I think the Classic Instruments sender is calibrated for their gauge...not sure of the resistance range?

[6600DURAMAX]

This is the exact issues I'm running into as well

I have NVU gauges and I am looking for a temp gauge sensor that is M12 x 1.5 - while this gauge fits that spec will it read accurately with my NVU gauges ?

My other option is to use the M12 adaptor from ITC ( or others) but then the temp probe tip isn't truly in the water flow so how accurate will that be?

I cant be the only one trying to solve this ....

[kglowacky]

i am running one in my 78 with factory gauge and ecm from a 2002 camero. Works great . fans come on at 1/2 go off at 1/4 gauge . Dont know anymore details then that.

[6600DURAMAX]

I called classic industries and they are not willing to give out the OHMs range for their sending unit ........... I find that very odd. How do they expect people to buy their part if they wont share the details of them ......

maybe its just me

[Joyridin]

I used one from Stewart Warner. Seemed to work fine. It took me 3-4 months to get it at the time, but that was during covid.

[6600DURAMAX]

I just ordered the adapter and will see what happens