You might consider doing the pressure sensor in the output line and the temp in the return line.
Th350 temp sensor location.
Th350 temp sender location.
Do not allow the converter outlet temperature to exceed 300f.
To lower the transmission temperature with the transmission in neutral run the engine at 1 200 rpm for 2 3 minutes to cool the oil.
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On a th350 with a stock depth pan i m going to put my sender on the edge of the pan facing the front of the car between the first and second bolt holes.
Black buick chevy oldsmobile pontiac th350 each part number.
It is the mileage on your body that adds up.
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This location is recom mended to monitor the true transmission temperature.
Rear of the transmission case.
The temperature in this location will vary significantly with each vehicle start up or hill.
Dont worry how old you are.
On gm th 200 th 200r4 4l80e and ford aod transmissions this is the lower oil line to the transmission case.
My original idea was to splice them into the cooler lines with some brass blocks.
For example if you consistently see the out line temp at 230 degrees on a pass and it suddenly jumped to 260 degrees you would start looking for a problem where the pan may only change by 1 or 2 degrees.
Than i got the idea to remove the test port plugs and install there but don t know if it will affect the reading or not.
If the temperature reaches 300f 350f reduce throttle.
Using the trans line will give you an indication of a problem before a pan temp sensor ever will.
On gm th 350 th 400 th 700r4 and powerglide transmissions this is the upper oil line to the transmission case.
If you need 2 inches inside the pan are you using mechanical temp sensor.
If i were going to install a temp gauge for the trans fluid then i d plumb it into the cooling lines somewhere.
