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Old 01-31-2019, 12:08 PM   #2
Senior Member
Join Date: May 2015
Location: Alabama
Posts: 9,633
Re: Mechanical Water Temp Gauge NPT Size

The mech sender I used on my c30 was 1/2" npt....they may not all be the same though between brands...
Drill and tapmthe passenger side head at the back...where the little metric plug is...
Mongo...aka Greg

1981 C30 LQ9 NV4500..
Mongos AD- LS3 TR6060...
Columbus..the 1957 IH 4x4...
2013 GMC Z71..daily driver
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