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I ordered an M12 x 1.5 to 3/8" adapter for my 5.3 swap for my original temp gauge.
Gonna stick it in the rear of passenger head.
Just realized my car uses one in 1/2" size.
Anyone know of a 3/8" sender that is close in ohms to suit?
There's a brass block plug on the rear passenger side of the block. I drilled and tapped for a 1/2" NPT sender on my 68 corvette.
Thanks but I won't be drilling and tapping at this point.
I can get a 3/8 sender and add resisters in line to get close.
I have no problem doing this. Just need to find one in 3/8 size relatively close in ohms to what a 69 Chevelle uses.
I found the plug in the pic attached beside the crank sensor.
Are you saying to drill and tap that plug? It looks about 1/2" NPT size already at the most.
Passenger side, but no matter. There's a huge one on the driver's side that I couldn't get out during the rebuild.
I got pissed and got to work in the garage.
I will pick up a stainless 1/2" coupling in the morning and weld it on to this adapter I made up.
Lots of folks use it because it's there - relatively easy to use. It will give you a temp reading just fine -- just know that whatever temp your gauge is showing - there's a higher temp at the front of the head. That's why the factory coolant temp sensor is there on the driver's side. I had a fitting welded into the radiator tank right where the hose with hot coolant coming in from the pump connects -- sensing the highest temp available. That way you know you've got worst case.