Water temp probe woes

[99 to Life]

I wanted to do the same thing. Upon reading, don't recall from what. But the temp senders back then are different from todays not only in collar size but the gases inside of the sender aka probe. But if your is all intack I don't see why you couldn't adapt that into the sbc. I understand what you are saying in that there is not enough lip on it to seal. I'd try a reducer and teflon, if that does not work, maybe try a rubber washer and washer if you can find one that is exactly the same size as your probe, and put them on it and tighten it down into the reducer, just a thought.

I wanted to adapt a modern sender with copper wire the OG gauge, but just never tried yet. I think that way would be better

I went with hidden aftermarket gauges because they are far more accurate. But I was in your shoes before.