Hi, I have a 89 motorhome with the fuel injected 460 and I have a question about the coolant lines that come off the motor and to the heater core.

Are there any vacuum controlled stop valves or anything else along the way or simply a hose from the engine to the heater core and back?

I picked the motorhome up as salvage with an engine fire and a big mess under the hood. I found someone with a blown engine who I bought all the wiring and connectors I needed but I wasn't there to see it come off.

The 460 is up and running and I simply looped the coolant hose coming off the block but I don't have another e350 with the 7.5 to compare it to and my all data has is a very limited description with no diagram.

So if someone has a photo or diagram or could simply tell me then that would be great.