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Temperature Sensor

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Old Apr 5, 2022 | 02:24 PM
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Default Temperature Sensor

I put on my new Edelbrock heads and took my sensors out my old heads until I realized they are to small for my new heads,and noticed that each side was different,so curious what’s the difference in them and any particular sensor to go with thanks.
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Old Apr 6, 2022 | 01:58 PM
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You don't say what year and your profile doesn't have jack for info.
Go to the willcox website and find the sensor you need. They sell small 3/8" units for specific years and 1/2" originals. Go eyeball that.
While you're at it order the appropriate adjustable resistor for your year.

Golferdad
You can also move the big sender to the intake manifold hole and then use the adjustable resistor to dial in your gauge.

https://willcoxcorvette.com/catalogs...erature+sender

https://willcoxcorvette.com/catalogs...table+resistor

FYI: I am using the original big sensor in the intake manifold and dialed it in with the adjustable resistor. It's a fantastic contraption.

PS- you may want to update your profile to include info about your car, or mention at least the year when you post questions....
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Old Apr 6, 2022 | 02:14 PM
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What year car? There are a few different sensors for the c3's as the years changed.
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Old Apr 6, 2022 | 02:20 PM
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Yea,sorry,did a profile a couple weeks ago,but I see I didn’t save them.thanks.
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Old Apr 6, 2022 | 03:10 PM
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1981,but I replaced my heads with Edelbrock aluminum E street heads.
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Old Apr 6, 2022 | 05:45 PM
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I wish you had said something earlier.
I caught that water port diameter difference before installing the head.
Took my aluminum head to a machine shop. Drilled & tapped for the GM sensor, $30 labor.
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Old Apr 7, 2022 | 02:09 AM
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Didn't the 81 come with 3/8" temp sender thread size?
Are you saying that the sender holes in your new heads are larger than the actual senders from your old heads?
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Old Apr 7, 2022 | 04:32 AM
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Interesting, I also run Edlebrock heads. My factory temp sender fit perfectly. But my car is a 77. Perhaps they changed?
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Old Apr 7, 2022 | 05:03 AM
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Yep they are larger than my old heads.
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Old Apr 7, 2022 | 12:16 PM
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I *think* you're saying that the holes are bigger than the sender. If so just order the reducer pictured below (or equivalent).
Originally Posted by Golferdad
Yep they are larger than my old heads.


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Old Apr 7, 2022 | 08:47 PM
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Oh ok.
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