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1953 GMC temperature probe
#1336587 Thu Dec 05 2019 10:55 PM
Joined: Dec 2013
Posts: 19
R
New Guy
Just got around to installing the temp probe on my 1953 GMC 1/2 ton with a 302-- mechanical (capillary tube) temp gauge. Had planned to use the rear most 1/2" NPT hole in the head. The probe is too long to fit with its adapter, it's about 3/16-1/4" too long-appears the probe hits the top of the block.
Research shows these trucks had their probes mounted on the thermostat housing. My housing has a boss for the probe, needs drilling and tapping--had planned to do that, BUT the capillary tube is TOO SHORT to reach to the front of the engine. Doesn't appear venders sell a longer cap tube temp gauge. Anyone know someone that can build me a gauge, or extend my current gauge's tube? Needs to be 18" long.


phone: 636-219-7705
Re: 1953 GMC temperature probe
Roverman #1336607 Fri Dec 06 2019 01:50 AM
Joined: Jun 2011
Posts: 3,630
E
Shop Shark
Wow, I have seen several that were long enough even for my 503, can you send it back?

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: 1953 GMC temperature probe
Roverman #1336646 Fri Dec 06 2019 11:35 AM
Joined: Jul 2019
Posts: 329
B
Shop Shark
I believe most all the after market ones were longer that the stock ones.
Does it look like this one?

https://www.classicindustries.com/product/1953/chevrolet/truck/parts/cx1722.html

Re: 1953 GMC temperature probe
Roverman #1336704 Fri Dec 06 2019 08:40 PM
Joined: Apr 2008
Posts: 795
F
Shop Shark
Maybe a real hardware store would have an adapter that may be taller to fit in the head. Just a thought.


Ed
Re: 1953 GMC temperature probe
Roverman #1336778 Sat Dec 07 2019 02:35 PM
Joined: Jun 2011
Posts: 3,630
E
Shop Shark
If one uses a tall adapter, I wonder if there is enough circulation around the sensor?

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: 1953 GMC temperature probe
Roverman #1336782 Sat Dec 07 2019 03:07 PM
Joined: Jun 2001
Posts: 730
T
Bondo Artiste
The thermostat housing was only used for electric temp gauge probes, never the mechanical style probe. Shoot me a email absolutesml@gmail.com and I’ll be happy to send you a pic of my mechanical gauge set up at the back of the block.


Phillip
1927 Chevy Capital 1 Ton truck - basket case
1941 Chevy Suburban - Parts only
1949 GMC Suburban - 10 year project
1945 GMC half ton truck - Driver
1946 Chevy COE - Might restore one day...
1959 GMC Half ton long bed NAPCO

https://photos.google.com/u/1/albums

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