My son purchased a 79 elcamino and it had from the factory A/c and Cruise My son purchased a 79 elcamino and it had from the factory A/c and Cruise control, those things were removed at one time and there seems otbe allot of extra hoses and wires sittign aorund. We are considering putting them back but unsure of what goes with what :? My son purchased a 79 elcamino and it had from the factory A/c and Cruise control, those things were removed at one time and there seems otbe allot of extra hoses and wires sittign aorund. We are considering putting them back but unsure of what goes with what :?

What size engine? I've got an 80 Elky with a 267, AC, and cruise sitting out back rusting into oblivion. It's all original. I can take a few pics for you. What do you want to see?

:mrgreen:

Those two systems should be the same regardless of the size of the V8.

On your cruise control you get full unported vacuum from a "T" on the intake manifold. You'll have a Vacuum line from the Brake Pedal to the Cruise master along with three wires with a plug on the end it could be an "L" shaped plug or a "T" shaped plug that goes to the Cruise Modulator/Amplifier / Cruise master. (I've seen it call all of those it is just the spot that the upper and lower Speedo Cables go to, and the speedometer is attached to the top connection on the Module and then the bottom goes to the Transmission. There are some tricky vacuum connections I can't explain them you'll have to have a diagram or someone else can explain. I took mine off! It didn't work and made the Speedometer bounce.

The AC is a piece of cake. If you have all the brackets. Get You can still buy a Hose assembly for it at the auto parts stores. Perhaps ACAuth can explain. He does this for a living.

Thnaks for the replys, Like I said all th eitems for the Ac and Cruise controlhave been reomved from under the hood, including the AC core that goes inside the fan housing. What about the load of the AC on the 305, anyone feel thatit was to much or?

Replacing the core is a lot of work but if you gotta have AC then it is work you just have to do. As far as the compressor, yes the compressor drags down an engine but it shouldn't be that bad. There are much better compressors than the ones that come on a Chevy and take lass of the Hp away from the engine but they are still a load. All the accessories are a drain one way or another.

Here in Texas AC is a must and it really needs to be working good. Even sometimes in the "Winter!"

Whenthey remvoed the AC, the unit plus hoses were removed and the the housing where the fan resides is still there, is that wher teh core would and the hoses wouldthen gothrought the slot in the housing..

Thanks

The box that you see on the firewall should have the hoses for the heater (hopefully connected) and just beside that (to the left) should be two connections for hoses. That will be the AC connections. Actually the Dryer hooks up to one and then connects to the AC compressor via the "Suction Hose". The other connection there will go from the Condenser (In front of the radiator) to the AC box. It will have the expansion valve in it (Lower hose connection on the box) that could also have the pressure switch on it. That is a much smaller hose and is a high pressure side. The other side of the Compressor Manifold Hose set goes to the condenser (in front of the radiator).

If the AC Evaporator has been removed then you will not see the two pipes sticking out of that AC Box.

So it is possible that if they removed it all then..... you will need

Compressor, Manifold hoses, Condenser (In front of the radiator), High pressure line, Dryer / Accumulator, High pressure switch, evaporator, and the expansion valve. along with the bracketing for the compressor.

I think that just about covers the A/C system. You'll need to have it evacuated, leak checked and charged once you get it together. It is important that you git rid of the atmosphere in the system (pulling a vacuum - evacuating) or the system will mess up and probably not work.

the only thing that remains is the bracket for the compressor to bolt to. Everything else is gone and the place where the hoses/ go into the fanhousing is just open. Should there be a raidator of som etype inside the fan housing.....The heator hoses are connected that.

Yeah, it is actually called an Evaporator.

It is where the liquid expands causing the rapidly expanding gases to cool. The expansion is a lot like the nozzle on a Spray Can. If you have a can of compressed air and relaese it slowly through a sprayer nozzle the can gets really cold. But then you probably already know that.

The one in front of the Radiator is called a Condenser.

When the gas is compressde into a liquid it heats up. It is ran through the Condenser to not only condense the gas but to cool it off some or remove the heat energy. At that point the Gas is a Liquid and is under a lot of pressure (High Side)

Am I helping any?

Yes helping allot, I very much appreciate it....... :)