Hot water takeoff and return

[highpowerdad]

Hi all, I have an engine that I might be re-furbishing to replace my 5.0GXI-e, it is a 5.7 GXI-D. It has a hot water system (for cabin heat I assume?). I know where the return is (large t-fitting), can someone tell me where the takeoff is and how I would plug it. It would be the bottom parts in the attached diagram. I don't have the engine in my possession yet, so I am trying to figure out what I have and what work would be involved to convert it.
Thanks
Scott R.

 

[alldodge]

The supply usually comes from a plug on the circulating water pump, so just plug it. In few cases it can come from the side of the block where the drain plug is (Formula does this).

 

[Bondo]

Hi all, I have an engine that I might be re-furbishing to replace my 5.0GXI-e, it is a 5.7 GXI-D. It has a hot water system (for cabin heat I assume?). I know where the return is (large t-fitting), can someone tell me where the takeoff is and how I would plug it. It would be the bottom parts in the attached diagram. I don't have the engine in my possession yet, so I am trying to figure out what I have and what work would be involved to convert it.
Thanks
Scott R.

Ayuh,.... The feed side should be coming from the motor side of the t-stat, either from the block drain as AD mentions, or on my Merc, there's a 1/2" pipe plug in the intake manifold water tube,....

The pipe plug in the circulating water pump, is for cold water return,.....