I have the bell shaped oil pressure switch which
screws on top by the oil filter. My question is I can't seem to find the "adapter" so I can screw into the block and then the bell shaped oil pressure switch onto the top of it. I am looking for some guidance. Has anyone make one of these? If you did what what parts did you use? Threads, sizes etc. Any help will be great. Thanks

 

Are you trying to put it on top of the china wall by the distributor instead? I think I used standard NPT fitting from local hardware store.

 

No mine is a 1989 350. I have the one by the distributor as well as the one with the one ontop of the oil filter or by it. When I rebuilt my motor I don't know where it went. Its kinda like an L-shaped fitting. I can't just screw in the switch becuase it wont fit without the adapter.

 

The standard brass NPT fittings at local hardware store should do it for you, it's what I used. When I installed my 350, the oil filter location was plugged, and I couldn't get the plug out, so I used an elbow and size adapter and put mine on the china wall.

You should only need one sender. There were several. My 1992 originally had only one - the 3 wire sender - it was by the oil filter. 1 wire is for the guage, the other two larger ones are for the fuel pump. When I swapped motors and went to carb, I seperated the 3 wires - ran the sender wire to an older style guage sender that like I said I had to install in the china wall. The fuel pump wires I ran to a relay on the firewall with a hot-in-run to operate my fuel pump when key is on (since I eliminated the ECM control of the fuel pump).

Some had both - the one fed the guage (china wall location) and the other ran the fuel pump (oil filter location).

 

I have the 2 wire ontop by dizzy and then the 1 wire bell shaped one which goes into the block.

 

one is the sensor and the other (switch) is for the gauge