Small block temperature sender - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pwdcougar · 02-02-2022, 04:44 PM

Looks like the stock location for the temp sender on my truck is on the left side of the engine by the spark plugs. I'm running an Edelbrock Performer and it has two locations that can be used for the temp sender. Anyone see a problem with capping the original location and putting it in the intake?

HotWheelsFan · 02-02-2022, 06:05 PM

Should be fine

**kwmech** · 02-03-2022, 01:39 AM

Port you have the sender in feeds the heater core.

67chevemall · 02-03-2022, 08:31 AM

Yep you dont want it in that hole
..

pwdcougar · 02-03-2022, 09:54 AM

Quote:

Originally Posted by kwmech

Port you have the sender in feeds the heater core.

Thanks that’s the info I needed. My other issue is sensor thread size. The motor is a Chevy crate that was installed in the 80’s. The original sensor was 1/2” pipe and the block hole is 3/8” pipe thread. At the time I ran in a pipe nipple and adapter. My new sensor is 1/2”. Do they make a sensor for a 70 gauge that is 3/8”? The Edelbrock diagram shows two different temp sensor locations. One is 3/8 the other is 1/2”.

**kwmech** · 02-03-2022, 11:08 AM

There is somebody on this site that machines them down for this application. Looked for a link and couldn't find it right away

**A1971Blazer** · 02-03-2022, 11:43 AM

Quote:

Originally Posted by pwdcougar

Thanks that’s the info I needed. My other issue is sensor thread size. The motor is a Chevy crate that was installed in the 80’s. The original sensor was 1/2” pipe and the block hole is 3/8” pipe thread. At the time I ran in a pipe nipple and adapter. My new sensor is 1/2”. Do they make a sensor for a 70 gauge that is 3/8”? The Edelbrock diagram shows two different temp sensor locations. One is 3/8 the other is 1/2”.

I have the modified sensors 3/8NPT in stock
Brand new AcDelco G1852...correct for 67-72 gauge
http://67-72chevytrucks.com/vboard/s...d.php?t=726700

pwdcougar · 02-03-2022, 12:17 PM

Quote:

Originally Posted by A1971Blazer

I have the modified sensors 3/8NPT in stock
Brand new AcDelco G1852...correct for 67-72 gauge
http://67-72chevytrucks.com/vboard/s...d.php?t=726700

Thanks how much? I’ll send you a message.

68 P.O.S. · 02-03-2022, 11:29 AM

What's wrong with the stock location in the driver's side head?

pwdcougar · 02-03-2022, 12:12 PM

Quote:

Originally Posted by 68 P.O.S.

What's wrong with the stock location in the driver's side head?

The thread size is different. Original block had 1/2 pipe thread replacement block has 3/8.

68 P.O.S. · 02-04-2022, 04:38 PM

Quote:

Originally Posted by pwdcougar

The thread size is different. Original block had 1/2 pipe thread replacement block has 3/8.

Yeah, caught that after I posted

BigBird05 · 02-03-2022, 05:53 PM

I'm a little confused by all of this I thought the sender went into the cyl head.

leftybass209 · 02-03-2022, 05:58 PM

Quote:

Originally Posted by BigBird05

I'm a little confused by all of this I thought the sender went into the cyl head.

originally, yes, you are correct. The temp sender was in the cylinder head. However, you can also put it in the intake manifold.

There's varying degrees of my mechanics, brothers, uncles' friend who races said one is better than the other.

My thought is, the cylinder heads are the biggest issue if you overheat, so why put it in the intake manifold? However... how much hotter is the fluid from one spot to the other, they're like a literal distance of a few inches at best, so idk the scientific, objective answer.

**HO455** · 02-04-2022, 05:57 PM

Quote:

Originally Posted by leftybass209

originally, yes, you are correct. The temp sender was in the cylinder head. However, you can also put it in the intake manifold.

There's varying degrees of my mechanics, brothers, uncles' friend who races said one is better than the other.

My thought is, the cylinder heads are the biggest issue if you overheat, so why put it in the intake manifold? However... how much hotter is the fluid from one spot to the other, they're like a literal distance of a few inches at best, so idk the scientific, objective answer.

And just to add to the confusion GM used several different locations over the years.

**A1971Blazer** · 02-03-2022, 06:29 PM

Quote:

Originally Posted by BigBird05

I'm a little confused by all of this I thought the sender went into the cyl head.

The hottest part of the engine is where the combustion takes place…cylinder head
the factory engineers designated the cylinder head as the place where the coolant temperature sensor should go…
whether you agree or disagree, that’s a fact.

BigBird05 · 02-03-2022, 06:32 PM

I only asked because the word block keep coming up.

leftybass209 · 02-03-2022, 06:45 PM

Quote:

Originally Posted by BigBird05

I only asked because the word block keep coming up.

Lol i get it.... every time i hear someone say 3 or 4 core radiator i always wonder why they need the extra 3 cores in the first place.

Alas, the phrasing stuck anyway and hardly anyone refers to it as a 3 or 4 row radiator.

pwdcougar · 02-04-2022, 08:35 AM

It’s my mistake. It is the head and not the block.

**A1971Blazer** · 02-04-2022, 08:40 AM

Quote:

Originally Posted by pwdcougar

It’s my mistake. It is the head and not the block.

It's all good...you will have what you need soon...

pwdcougar · 02-07-2022, 07:57 PM

Quote:

Originally Posted by A1971Blazer

It's all good...you will have what you need soon...

Got the part today! Fits perfect thanks!

BigBird05 · 02-04-2022, 10:09 AM

Not trying to criticize, I was just trying to clarify for my understanding.

02-02-2022, 04:44 PM	#1
pwdcougar Registered User Join Date: Oct 2013 Location: New Jersey Posts: 1,308	Small block temperature sender Looks like the stock location for the temp sender on my truck is on the left side of the engine by the spark plugs. I'm running an Edelbrock Performer and it has two locations that can be used for the temp sender. Anyone see a problem with capping the original location and putting it in the intake? Attached Images __________________ "You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997)

02-02-2022, 06:05 PM	#2
HotWheelsFan Registered User Join Date: Mar 2010 Location: Oregon Posts: 189	Re: Small block temperature sender Should be fine __________________ 1970 C20 Long Bed Fleetside - Restoration My truck videos - Youtube

02-03-2022, 01:39 AM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,659	Re: Small block temperature sender Port you have the sender in feeds the heater core.

02-03-2022, 08:31 AM	#4
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Re: Small block temperature sender Yep you dont want it in that hole .. __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

02-03-2022, 11:08 AM	#6
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,659	Re: Small block temperature sender There is somebody on this site that machines them down for this application. Looked for a link and couldn't find it right away

02-03-2022, 11:29 AM	#9
68 P.O.S. Registered User Join Date: Jan 2007 Location: Puyallup, WA Posts: 1,662	Re: Small block temperature sender What's wrong with the stock location in the driver's side head? __________________ 72 C10 lwb fleetside -stock 350/350 combo

02-03-2022, 05:53 PM	#12
BigBird05 Registered User Join Date: Aug 2019 Location: Cheraw Posts: 1,300	Re: Small block temperature sender I'm a little confused by all of this I thought the sender went into the cyl head.

02-03-2022, 06:32 PM	#16
BigBird05 Registered User Join Date: Aug 2019 Location: Cheraw Posts: 1,300	Re: Small block temperature sender I only asked because the word block keep coming up.

02-04-2022, 08:35 AM	#18
pwdcougar Registered User Join Date: Oct 2013 Location: New Jersey Posts: 1,308	Re: Small block temperature sender It’s my mistake. It is the head and not the block. __________________ "You know that little thing in your head that keeps you from saying things you shouldn't? Yeah well, I don't have one of those" 1969 Mercury Cougar Standard 4 speed 1969 Mercury Cougar XR7 convertible 1970 4WD Chevrolet Suburban 1997 4WD Chevrolet Silverado Extended Cab Short Bed (purchased new January 1997)

02-04-2022, 10:09 AM	#21
BigBird05 Registered User Join Date: Aug 2019 Location: Cheraw Posts: 1,300	Re: Small block temperature sender Not trying to criticize, I was just trying to clarify for my understanding.



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