5.3 temp sensor conversion

[BrutonLS1]

Hey guys,

I've got a 5.3, it has 6.0 heads cast#317. I've bought 2 temp sensor adapters. I was trying to get my 1/8npt gauge to plug into the engine. The first adapter I had broke when I was tightening it (barely had any pressure on it) I then ordered another adapter from a DIFFERENT company, and the sender unit wouldn't go in all the way because there was an edge in the middle of the adapter that was blocking it, so I tried drilling out the adapter to fit the sensor, I drilled as far as I could without hitting the threads, and the sensor still wouldn't go in!!!
I decided to ditch the old goofy gauge with the long sensor and 1/8npt threads, and find a gauge that came with a short sensor and 1/8npt threads, that would fit right into my second adapter. I went to all 4 autoparts stores in town and found that NO ONE has a 1/8npt gauge!!! All the gauges I found had much bigger fittings. (I wish I remembered the sizes)

I would like to use the autometer gauge #4337 but do not know which adapter I need to make this work with the weird GM Temp sensor threads on the driver side cylinder head?? $70 and 2 frustrating weeks later, I'm asking for y'alls help. Thanks