What size is the oil galley plug on the head on drivers side?

And man I should fix that oil leak by the high pressure fuel pump that Gm obviously never fixed in any of the engines. Makes it messy

 

I believe M12x1.75

Autometer Electric Temperature or Pressure 1/8" NPT to M12x1.75 Ecotec Oil Feed Adapter - Interior

 

got one on amazon for 16

 

Hope you got the stainless steel one. The brass ones snap for like no reason lol.
My brass one snapped from vibrating on my LSJ.

 

Well I have a brass on in the back by the turbo for oil pressure gauge and it's been holding up for years. But Ya it looks like the stainless one.

 

Did you have one of the big sending units attached to it?

 

Never mind I did lol thanks for telling me I cancelled and reorder right one

 

Yes. Electric Autometer 100psi sender.
Still, it snapped right off under the weight of autometers own sender. I was doing a burn out, my heart dropped when oil psi suddenly hit 0 lol.

 

I bet that was a mess. mine is a temp sensor so not as heavy

 

I would definitely remote mount the sender.

I used the small one, but still ran a short AN line to it so there was no weight on the adapter.

 

IIRC after I installed the stainless steel galley adapter I made a little bracket to hold the sender against the block, almost like a sling for it. AN would have been a good idea, I didnt think of that.

 

Where can u even get an an to 12mm 1.75 fitting, I looked

 

 

To bad they don't ship to Canada. Read the reviews, one guy had that break on him as well. I just decided to do it a much better way, I have a oil pressure sender relocated to an aluminum manifold block, I'll just drill a hole in that and tap it and screw my sender in there, problem solved, no adapter needed.

 

If a dude broke it, he over torqued it a ton.

 

Maybe u did that to brass one lol. Idk iv had a sender unit on a brass fitting in my oil block there for 5 years, it hasn't broke yet. Maybe u just had bad luck