oil sensor location?

[nsxxtreme]

So I know about the oil sensor on top of the engine but my blazer had a second sensor that went on the driver side of the engine. Problem is I dont know where exactly it goes. The 4 bolt main block I purchased had a plug near the oil filter where I think this sensor goes. Does anyone know for sure?

 

[nsxxtreme]

New motor is ready to drop in just need to figure out the sensors.

 

[cwn anwyn]

Pretty sure it goes in where that plug is/was. My 84 had the one on the top for the guage and the one your asking about was for the idiot light.

Z

 

[byggyns]

On every one of my small blocks, that port on the side has been used for the factory gauge sender (1 prong- large sender). The one on top of the block is the switch for the idiot light & on FI engines, for the electric fuel pump relay emergency override (2 or 3 prong small switch). I understand that some years / models swap locations, so match up your wires with the appropriate switch / sender location.

And, yes, the port immediately above the oil filter in your photo is the one I referred to as the side. IIRC, it is 1/8" NPT.

 

[3MAX]

Are those split lock washers under your head bolts? I'm not saying it's incorrect, but I've never seen them in that application.

Engine looks great by the way