Which Hose?
 

I have a 1985 Dodge Ram pickup with the 3.7L slant 6, and last night one of my hoses blew I was almost to my destination. I ended up using round 5 gallons of water just to get round 20 miles. It it's red, about 1 inch in diameter, and round 20 inches long. It clamps to a port in front of the motor. Then you go towards the back of the house and it clamps to a little circle thing song with a black hose on the other side of it. Please help me figure out which hose this is. I do my own work on her so if y'all can help me figure out which hose it is then ill just fix it myself.

Thanks!

Sounds like one of your heat core hoses.