Coolant Temp Sensor Location: Head or Intake? - Team Camaro Tech
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post #1 of 4 (permalink) Old May 21st, 17, 07:08 AM Thread Starter
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Brett
 
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Coolant Temp Sensor Location: Head or Intake?

Since there are some cooling questions currently, I'll add another; I am in the process of switching my incorrect Quadra-Jet Intake out for a Dual-Plane Air Gap intake to match up with my Holley 650, and since I'm in a good place for placing my Temp sensor in the best place, where is it? initially, I had it in the left rear intake. Then, when I wasn't getting much activity on my temp gauge, when I upgraded to the Roller Cam, I went ahead and moved the sensor to the forward left-hand port in the intake, right next to the T-Stat. My engine is a 1966 396 with 3904390 oval port heads. I keep noticing people using the forward-Left port in the head. Can you guys offer feedback on any advantages/dis-advantages to these different locations?

Thanks All!

Brett....

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1969 Code X-66 SS 396 - RS Conversion - TKO600 - 3.73 Posi - Paint Code 71-LeMans Blue
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post #2 of 4 (permalink) Old May 21st, 17, 07:34 AM
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Chad
 
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Re: Coolant Temp Sensor Location: Head or Intake?

I've always put the temp sensor between 1 and 3 on the driver's side head. I believe that this is the hottest area that can be gauged and is about 10-15 degrees cooler than the intake, at least according to my laser. Some run gauges in both spots.

67 Black RS Coupe, 383, M21 & 10 Bolt Posi. Edelbrock E-Tech 170 Heads, 2204 Roller Cam, Air Gap Intake.
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post #3 of 4 (permalink) Old May 21st, 17, 12:32 PM
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Mike
 
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Re: Coolant Temp Sensor Location: Head or Intake?

I cannot comment on the actual coolant temp difference between the head and the intake locations for the temp probe. I have a RPM air gap intake, and installed my coolant temp probe into the intake coolant port close to the T-Stat housing.

I used to have my coolant temp probe installed in the head between the #1 and #3 cylinders, but I found the temp wire from the probe was always getting in the way when I was changing the spark plugs... and I always had to double check that the temp wire was not touching the header.

It all comes down to personal preference, but I think the temp probe install looks cleaner at the intake manifold... with the wire running along the top side of the valve cover back to the fire wall. I never liked the look of the temp probe wire coming out from the head location.

I also wanted to know how my thermostat was working. By placing the coolant temp probe by the thermostat, I have a clear indication of when my thermostat was opening and that it is operating correctly. I have a 180 degree thermostat and my temp gauge reads 180 degrees at full operating temp.

Hope this helps with your decision.
Mike
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post #4 of 4 (permalink) Old May 21st, 17, 03:17 PM Thread Starter
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Re: Coolant Temp Sensor Location: Head or Intake?

After I posted this question I went out and looked at my heads.....I don't have a port in my heads for a temp sensor! That was an easy decision, haha. I will leave it in the port next to the thermostat when I get my air gap intake.

Brett....

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