I am trying to figure out all the plumbing and vacuum stuff in my 87 gt because i am swapping an engine and baught the car without an engine. I am having a problem trying to figure out the heater core lines, I can see where the 2 are i think, they are on the passanger side symetrical to the ac lines right? from there i see one come up and around and the other looks like it would plug into the coolant line that goes to the water pump, but that doesnt make sense to me..... is there a diagram anywhere someone could point me to? Thanks a million!

Blake

Take a look at this picture from Dodgerunner:

See the heater hose with the open end facing you? That goes to the thermostat housing.

The other hose connects to a metal line that follows the frame rail to the trunk, then up under the dogbone, then over to the water pump.

Hey thanks, plus for you. Mine looks like the hoses are a bit different and i dont have a hose that runs around the fender to the back of the car like the one in that pic...hmmm....mines an 87 fastback, could it be different than that one?