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Do i need an npt adapter for aftermarket temp gauge?

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Old Aug 18, 2011 | 09:39 PM
  #1  
J0hn_J0hn08's Avatar
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Posts: 482
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From: SE Houston TX
Car: 1986 Iroc-Z
Engine: 355
Transmission: 700R4
Do i need an npt adapter for aftermarket temp gauge?

Im looking to buy this gauge to use as an aftermarket temp gauge because my cluster is a bit jumpy sometimes.

http://www.summitracing.com/parts/AT...s/?prefilter=1

I plan on plugging in the gauge where the stock sending unit is between the two spark plugs on the driverside head.

Will i need an npt adapter? like this one?
http://www.summitracing.com/parts/ATM-2263/

or can i just buy the gauge by itself?
Im not sure if it will be the right thread size.

Can anyone give me some info ?

Thanks
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Old Aug 30, 2011 | 03:04 AM
  #2  
IROCtheRoad's Avatar
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Joined: Sep 2003
Posts: 738
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From: Hurlburt Field
Car: 84 Z28, '15 Colorado
Engine: L69
Transmission: A4
Axle/Gears: 3.73
Re: Do i need an npt adapter for aftermarket temp gauge?

Factory heads use 3/8" threads.

Some aftermarket (Trickflow) use 1/2" threads.

If I'm not mistaken, Autometer's should come with a 3/8 to 1/2 adapter
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Old Aug 30, 2011 | 07:01 AM
  #3  
J0hn_J0hn08's Avatar
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Joined: Jun 2010
Posts: 482
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From: SE Houston TX
Car: 1986 Iroc-Z
Engine: 355
Transmission: 700R4
Re: Do i need an npt adapter for aftermarket temp gauge?

Thank you exactly what i needed to know.
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