66 C10 factory temp gauge and a Temp Sending Unit on a vortec L31. Anyone done it? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

msg · 10-20-2020, 03:14 PM

After recommendations from others I checked with the site member A1971Blazer about some help with a temp sending unit that will fit the block of an L31 Vortec and he uses the AcDelco G1852 part and has had it work for 67-72 but wasnt positive it would work on a 66 temp gauge. Ive got the American Autowire kit to update my 66 with and spoke with them and was told as long as the specs were 620 ohms for cold to 96 ohms to hot that it would work fine. Ive contacted AC Delco and havent heard yet on what the specs are. Anyone had this done for a 66 with an L31 and had it work ok?

**The Rocknrod** · 10-20-2020, 04:45 PM

http://67-72chevytrucks.com/vboard/s...d.php?t=779140
The correct sending unit from Lectric Limited. https://www.lectriclimited.com/elect...ng-unit-110070
Part # 01513321
There are many GM sending units that look similar but have different ohm readings. We know this one works.
You may want to read this - http://67-72chevytrucks.com/vboard/s...44&postcount=3

msg · 10-20-2020, 05:38 PM

Thanks Rocknrod, I mistakenly (frantically) posted 2 threads today on temp units. Cwcarpenter98 also mentioned the lectric limited part so that is what I am going to get. I have plugged off a 1/2 npt port in the new edelbrock intake I have and reconsidering taking the lectric limited unit and installing it there instead of having to deal with the block. Does it read that differently in the manifold vs block? Would I be making a mistake by not having it in the block?

Also thanks for the other two links you sent. Ray Mcavoy helped me out a great deal when I was trying to test the existing gauges I had in my cluster and he brought up the ammeter issue and I switched it out with the voltmeter instead. Im nearly done with the cluster, just need to add the tach and vacuum.

**cwcarpenter98** · 10-20-2020, 08:35 PM

I wouldn't think there would be too much of a difference. If it runs hot, it will show in both places

**The Rocknrod** · 10-20-2020, 09:39 PM

That's where they were.

10-20-2020, 03:14 PM	#1
msg Registered User Join Date: Feb 2013 Location: GA Posts: 1,315	66 C10 factory temp gauge and a Temp Sending Unit on a vortec L31. Anyone done it? After recommendations from others I checked with the site member A1971Blazer about some help with a temp sending unit that will fit the block of an L31 Vortec and he uses the AcDelco G1852 part and has had it work for 67-72 but wasnt positive it would work on a 66 temp gauge. Ive got the American Autowire kit to update my 66 with and spoke with them and was told as long as the specs were 620 ohms for cold to 96 ohms to hot that it would work fine. Ive contacted AC Delco and havent heard yet on what the specs are. Anyone had this done for a 66 with an L31 and had it work ok? __________________ Progress thread for my 66 http://67-72chevytrucks.com/vboard/s...d.php?t=623848

10-20-2020, 04:45 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 66 C10 factory temp gauge and a Temp Sending Unit on a vortec L31. Anyone done it http://67-72chevytrucks.com/vboard/s...d.php?t=779140 The correct sending unit from Lectric Limited. https://www.lectriclimited.com/elect...ng-unit-110070 Part # 01513321 There are many GM sending units that look similar but have different ohm readings. We know this one works. You may want to read this - http://67-72chevytrucks.com/vboard/s...44&postcount=3 __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

10-20-2020, 05:38 PM	#3
msg Registered User Join Date: Feb 2013 Location: GA Posts: 1,315	Re: 66 C10 factory temp gauge and a Temp Sending Unit on a vortec L31. Anyone done it Thanks Rocknrod, I mistakenly (frantically) posted 2 threads today on temp units. Cwcarpenter98 also mentioned the lectric limited part so that is what I am going to get. I have plugged off a 1/2 npt port in the new edelbrock intake I have and reconsidering taking the lectric limited unit and installing it there instead of having to deal with the block. Does it read that differently in the manifold vs block? Would I be making a mistake by not having it in the block? Also thanks for the other two links you sent. Ray Mcavoy helped me out a great deal when I was trying to test the existing gauges I had in my cluster and he brought up the ammeter issue and I switched it out with the voltmeter instead. Im nearly done with the cluster, just need to add the tach and vacuum. __________________ Progress thread for my 66 http://67-72chevytrucks.com/vboard/s...d.php?t=623848

10-20-2020, 08:35 PM	#4
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,488	Re: 66 C10 factory temp gauge and a Temp Sending Unit on a vortec L31. Anyone done it I wouldn't think there would be too much of a difference. If it runs hot, it will show in both places __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

10-20-2020, 09:39 PM	#5
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: 66 C10 factory temp gauge and a Temp Sending Unit on a vortec L31. Anyone done it That's where they were. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?



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