GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

LS2 thread size/pitch questions

Old Feb 20, 2013 | 11:02 AM
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Default LS2 thread size/pitch questions

just working my way to the nickel and dime stuff that will eventually kill me on my build.

i need to buy a e-fan controller and manual temperature guage and manual oil pressure guage. i'm not running a PCM so dont ask why lol.

#1) the engine temp senso on the front side of the drivers head...what thread do i need to get for my e-fan controller to fit into that hole.

#2) i plan to run the engine temp from the passenger back side of the head. there is a plug back there that i should be able to tap into. what size on that thread?

#3) thread size on the oil pressure sending unit hole
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Old Feb 20, 2013 | 11:30 AM
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WHY are you not running a PCM?????

I bought an el cheapo oil gauge from Oreilly for $17 and it had the metric to stand adapter in the box. Hint hint
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Old Feb 20, 2013 | 11:38 AM
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Speed Inc - Pure Power

both adapters right there. same ones i use
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Old Feb 20, 2013 | 11:39 AM
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#1 and #2 are the same btw
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Old Feb 20, 2013 | 01:55 PM
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Originally Posted by TXSZ66AVLANCHE
WHY are you not running a PCM?????

I bought an el cheapo oil gauge from Oreilly for $17 and it had the metric to stand adapter in the box. Hint hint
i ditched that ancient fuel injection technology in favor of a carburetor.
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Old Feb 20, 2013 | 01:58 PM
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Originally Posted by Phantom
Speed Inc - Pure Power

both adapters right there. same ones i use
there isnt a manual guage that would thread right in? i'm just wanting to run some manual guages straight up under the cowl of my hood. my dash will only have RPM, MPH and voltage.

then under the cowl i'll have oil psi, engine temp and nitrous pressure.
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Old Feb 20, 2013 | 02:01 PM
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I have no idea, but that's the threads right there. Those adapter have 1/8' npt that you could put sensors in. That's what I do or did. ECT in the driver right side head, now in the passenger read and oil pressure on the top port
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Old Feb 20, 2013 | 02:41 PM
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ok, just to clarify, the oil pressure threads are the same size as the threads on the back side of the passenger head? is the drivers front hole where the OEM temp sensor goes the same size also? the oil sensor seemed a lot bigger if i remember correctly.
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Old Feb 20, 2013 | 02:48 PM
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Electric Temperature Adapter 1/8" NPT to M12x1.5 - threads in the cylinder heads

Oil Pressure Adapter 1/8" NPT to M16x1.5 - self explanitory
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Old Feb 20, 2013 | 03:58 PM
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thanks for retarding it down for me hahah...but just to clarify. lmao J/K.
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