Here are some pics of a block heater or temperature gauge that threads into a freeze plug hole on the side of the block. The photos are disorienting and show the block upside down on a stand (I guess I could have held the camera upside down).
Attachments
block heater 4.jpg (37.46 KB, 165 downloads)
Block heater 5.jpg (40.57 KB, 164 downloads)

Last edited by tom moore; 11/12/2020 5:50 PM.

1946 GMC Project
"Back-in-the-day Restore"
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