Its a 84 13b from a gslse. Heater core is currently not installed and I just want to fire this bad boy up. Its sitting in an 84 mazda b2000. So I think theres 3 water ports on the engine??

1. on intake manifold
2. driver side engine right below oil filter
3. right below thermstat housing

Questions:

1. Can I block all these off for now and just test run the engine?
2. Can I block them all off and drive it causing no harm?
3. Which one is the delivers water to the heatcore and which is returning line?

Outside wiring up coils to fire this thing up for the first time. So if you got the time you can txt or call me with said answers. 9...0..3.....3...9..9..8..0..3..6.

Thanks again,

Shawn