67 Temp Sending Unit - Team Camaro Tech
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post #1 of 5 (permalink) Old Apr 9th, 08, 08:12 PM Thread Starter
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Dee
 
Join Date: May 2006
Location: central ok
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67 Temp Sending Unit

I recall seeing a post where someone was asking about a temp sending unit with the old style connector. I am putting a numbers engine in my 67 SS350 and needed one of these senders for a gauge. I asked my pal at O'Reilly's on a whim and he went back in the isles and brought our a BWD part number WT203. I'll be darned if it wasn't exactly what I was looking for!

And it only cost $6.25. I haven't fired the engine yet to see how it will work but if anyone is looking for such a thing I don't think you can go wrong with this one. I'll try to post pictures of it installed later.

Dee

1967 RS/SS350 Camaro (mostly stock)
1969 RS/SS Camaro (being improved!)
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post #2 of 5 (permalink) Old May 8th, 08, 08:37 PM Thread Starter
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Dee
 
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Re: 67 Temp Sending Unit

Well, some things are just too good to be true.

After many issues to deal with, I finally have the engine up and running. Runs good too!

This sending unit shows the engine to be running quite a bit on the warm side. I have tested temps at the radiator and on the intake at the thermostat and it is not running hot. I can even leave me hand on the intake for a half minute or so.

My guess is that this sending unit has a different temperature/resistance pattern than the one I need. Tomorrow I plan to pull it out and compare it to my old one (it still worked okay but did not look good) at room temperature.

I'll post the results in case anyone is interested.

Dee

1967 RS/SS350 Camaro (mostly stock)
1969 RS/SS Camaro (being improved!)
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post #3 of 5 (permalink) Old May 9th, 08, 07:11 AM
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Charlie
 
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Re: 67 Temp Sending Unit

Where is the sender located? Is in the head between #1 & #3 or #6 & #8? If so, then it will read slightly higher. Unless the sender is in the water outlet, you gauge is going to read slightly higher than radiator.

Charlie Knudsen 67 Camaro RS/SS 350 TKO 600, 4.10's, AFR 195 Street Heads, Comp 270H, Rhoads Lifters, Crane Ignition, Pertronix Dizzy, Performer RPM Q-Jet, Heavily Modified Q-Jet, Hooker Comp Headers, MagnaFlow 2 1/2", 144 Decibles(Alpine CDA-7998 Head Unit, RF X7 and RF 750X Amps, MB Quart Mid's & High's, Kicker L7 12" Solo Barics)
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post #4 of 5 (permalink) Old May 9th, 08, 10:08 AM
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John
 
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Wink Re: 67 Temp Sending Unit

On a "Numbers 1967 SS350" - the sender would be in the intake, on the driver's side next to the thermostat housing ...

It is quite normal for replacement senders to have different (universal) specifications than the OEM unit.
You can install a variable resistor in the circuit and 'tune' the gauge reading to adjust the accuracy of the gauge closer to your liking - but, factory gauges are notoriously in-accurate and are to be used as a referance rather than an absolute standard anyway.

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post #5 of 5 (permalink) Old May 10th, 08, 08:43 PM Thread Starter
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Dee
 
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Re: 67 Temp Sending Unit

Well, I compared the new sending unit's resistance at room temp to the old sending unit's resistance at same temp. The new one was 600 ohms, the old one was 400 ohms (my ohm meter only reads to the nearest 100 ohms at tis scale). I put the old one back in. Will drive it tomorrow to see how it does.

I went back to O'Reilly's. They had two more of the new sending units. Both ones on the shelf read the same 600 ohms. I may have to live with the dirty old one rather than a clean new one.

My sending unit is in the intake manifold very near the thermostat housing.

1967 RS/SS350 Camaro (mostly stock)
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