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Old 03-17-2019, 07:17 AM   #2
mongocanfly
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Join Date: May 2015
Location: Alabama
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Re: Temp sensors and LS swaps

ive never seen or heard of a 1/2-18npt....all npt ive seen are 1/2-14...
if you got a replacement sender for a 78 it should work with your gauge...you could test it before you do any machine work though...put it together and drop it in a pan of boiling water with a temp probe in it and compare that to what your gauge is showing...you could test your old sender as well
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