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4 speed temperature gauge

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Old Dec 13, 2013 | 12:05 AM
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Default 4 speed temperature gauge

Since I've got the engine out and the trans out by default, I figured it was time to dry up that annoying little leak between the main case and the mid plate. Gaskets were perfect, I really don't think the trans has ever been apart before now but I have a new gasket/seal kit on the way.
The real question is- Now would be a perfect time to drill and tap the case for a temperature probe. But where should it go? At the bottom where it looks like GM should have put a drain plug?
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Old Dec 13, 2013 | 12:08 AM
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Could you use a brass NPT bushing in place of the drain plug to install the temp sending unit?
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Old Dec 13, 2013 | 12:20 AM
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Honestly, I can put it anywhere. The fill plug would not be a good choice, but that is the only hole in the case. Anywhere else, I drill and tap.
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Old Dec 13, 2013 | 12:28 AM
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I have a T10 and it has a fill plug and a drain plug on the bottom side with a 1/2 in NPT plug, I just assumed that the other transmissions also had a drain plug. I have added spots only to automatic transmissions.
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