Oil Pressure Sending Unit Install on 440

[captain crusty]

Little heat makes a perfect oil sending unit wrench

 

[RJRENTON]

Hmmm,
I cant remember BUT...I think there are 2 different types
Depending on years.
Be advised, they both are NPT thread...

I believe the tapped hole in the block (there are 2, one pluged, but both could be used) is 1/8" NPT (National Pipe Thread- tspered). You may just need a short extension, or 45degree elbow and coupling to get clearance.....just my opinion of course....
BOB RENTON

 

[khryslerkid]

The ports on the back of this 1967 440 are two different sizes. The factory location is 1/8" npt thread and the right side is 1/4" npt. The original 361 that came out of the car has both 1/8" npt.

 

[Time Machine]

1976 440-3 So the bell-shaped unit is an oil pressure gage that hooks to a gage. What does the unit next to it on the passenger side do? Is it a pressure warning light sending unit? Or is an oil temp sending unit that would go to a gage?

 

[69Bee]

Left-Oil pressure gauge
Right-Oil pressure light

 

[Time Machine]

Left-Oil pressure gauge
Right-Oil pressure light

Thanks !!

 

[Time Machine]

I pulled two other sending units that have never been hooked up also. Which one is the temperature sending unit that hooks to a gage and which one goes to the temperature warning light?

 

[69Bee]

Left-Electric temp gauge
Right-Manual spring covered capillary tube temp gauge (Yours is broken)

 

[Time Machine]

"Yours is broken" yup need that as a bumper sticker. They are both temp gages. I heard the capillary tube one is more reliable? Why two temp gages so close to each other? It not before and after the thermostat. Thanks for the info. I really should by the service manual.

 

[69Bee]

"Yours is broken" yup need that as a bumper sticker. They are both temp gages. I heard the capillary tube one is more reliable? Why two temp gages so close to each other? It not before and after the thermostat. Thanks for the info. I really should by the service manual.

The electric is for the stock OE gauge, and the mechanical is for an aftermarket gauge, usually at the bottom of dash frame. They both should represent the temperature accurately enough. The problem arises when the electrical sending unit has to be replaced, and all we have is chineze **** with improper ohmic ranges, so the temp indication is not correct anymore. The manual capillary tube gauge is a complete assembly and as long as the tube or bulb are not damaged, should work forever. My money would be on the gauge unit itself having problems long before the capillary system did.