Changing the heater core in the '78 Phoenix is primarily an inside job, meaning your going to be working under the passenger side dash.
First, disconnect the battery, then drain the radiator of all coolant (preferably not onto the ground). Remove both heater hoses at the fire wall and remove the rubber grommet on the firewall at the top hose.
Remove the glove compartment door and the glove box itself.
When you look under the dash you are going to see the big plastic heater case. That entire unit needs to be removed and it contains your heater core. Most of the screws are self evident and not hidden but there are two studs that protrude into the engine compartment that you need to remove from that side. They are located on the firewall behind the right (passenger side) valve cover. Look for two threaded studs with an11mm nut and remove those.
Once the heater case is removed carefully remove the rubber gasket and remove the 7 small screws holding the heater core and it's mount in place.
I left out some of the details that are obvious like disconnecting vacuum lines and such.
A third stud is on the lower right of the heater case inside and has a grounding strap attached to it. The factory manual calls for you to use a 1/4: drill and drill that stud out which is the easiest way, unless you want to remove the right front fender.
I don't know but I think it is few, I have one in Egypt
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
factory recommendation is to cut a hole in the inner fender well to access/replace it.
Programme super Phoenix - 1978 is rated/received certificates of: Belgium:KT
Flasher should just "plug in" either next to or inside fuse box located by steering column under dash
There are a hundred answers for that question on here. However, the easiest way is to remove the passenger side fender to gain access.
Summer Phoenix was born on December 10, 1978.
Collins College - Phoenix - was created in 1978.
Summer Phoenix was born on December 10, 1978.
1978
Dallas - 1978 The Phoenix 5-16 was released on: USA: 29 January 1982
Dawn Phoenix was born on July 2, 1978, in Larnaca, Cyprus.