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Joined: Oct 2012
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G
Wrench Fetcher
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hey guys,
this might be a rediculous question, but on the head of my 1958 235, when looking from the front of the engine if you look at the upper right side of the head there is a hole, on top of the head, outside of the valve cover. Its fairly large, about 3/4" or so. WHAT GOES HERE?! i've been looking at pictures at it seems like its a sensor of some sort. I can't find anything in my manual, nothing online, and i cant remember wtf i took out of there! I probably left it in and the machine shop took it out. please let me know what it is.

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H
'Bolter
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Temperature sensor, if we are talking about the same place.


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'Bolter
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Maybe the Machine shop will know?. My temp sender is on rear drivers corner.

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K
Shop Shark
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In the link below is a picture of a 235 head from a chevy shop manual. The hole between head bolts 7 and 13 is where the temperature sensor goes. I am guessing this is what you are referring to. It is just outside of the valve cover.

235 head

Kurt

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1
'Bolter
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That's correct.....


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Originally Posted by gbuck
hey guys,
this might be a rediculous question, but on the head of my 1958 235, when looking from the front of the engine if you look at the upper right side of the head there is a hole, on top of the head, outside of the valve cover. Its fairly large, about 3/4" or so. WHAT GOES HERE?! i've been looking at pictures at it seems like its a sensor of some sort. I can't find anything in my manual, nothing online, and i cant remember wtf i took out of there! I probably left it in and the machine shop took it out. please let me know what it is.

Like the others said, temp sensor.


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perfect! thanks you guys, i have no idea where mine is so i guess i have to order a new one.

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K
Shop Shark
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Are you sure the sensor is not just dangling out of the firewall still attached to the tube? If it is the typical gas operated gauge, (not electric) it can't be detached from the tube which is also part of the gauge. If the sensor has been detached/broken the whole thing is toast and you will need a new gauge.

Kurt

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If you have the gauge but the tube has been cut there are outfits advertising in Hemmings that can rebuild it.

Last edited by Tiny; 12/09/2012 10:01 AM.

Save a life, adopt a senior shelter pet.
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really? i looked on my firewall and theres just a wire with a slip connector, i recall just unplugging it from the sensor. The machine shop must have pulled the sensor out of the head.

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Wrench Fetcher
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it looks to me that if i just got a new sensor in the head, the wire would plug right back on the sensor without a problem. or am i missing something?

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'Bolter
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Starting in 1956 Chevrolet went to electric temp gauges.
Just buy a sender/sensor and hook up the wire.


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5
'Bolter
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I'm quessing he has a electric temp sensor. I think second series
55 truck were the last to use the bulb set up. I think this is what he's looking for.

http://www.americanclassic.com/images/SP815.jpg

Last edited by 55 SHAKER; 12/09/2012 1:21 PM.

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G
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got the temp sensor at my local parts shop, it was about $22, not cheap.


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