It should be in the back of the engine, just to the drivers side of the distributor.
8.3:1 is stock
Front driver side.
The schematic for an 83 Chevy 305 engine can be found in the service manual. It gives the location of each component and how everything is connected.
usually caused by a leaking heater core.
.045 inch , according to my Chilton book
It's sitting on top of the distributor cap.
driver side at rear of engine under neath
Passenger side, front, lower on the motor.
either a 285 or a 350... the odds are that its not a turbo 400
How do you change the heater core on a 1978 Chevy Nova Custom with a 305 v8 engine and where is it located on the car? thanks jj
They made a few versions of it. I would have to know which motor you have.
That would be a 2 bolt