The spring goes towards the engine and if there is a vent hole , the thermostat is installed with the vent hole at the top if the thermostat is installed vertically
I'm not sure what you mean by direction? The thermostat goes in with the spring side in the housing with the metal cross bar horizontally positioned.
Spring side down, to the engine
A thermostat always goes in spring side toward the engine.
on a 1993 4.9 it is just to the left of the thermostat where the radiator hose and heater core hoses go into the thermostat it has a couple of wires running into it.
With the spring part inside the engine
Thermostat Spring always goes towards the engine
The spring goes towards the engine , and if the engine thermostat has a vent hole , the hole goes at the top
The spring goes to the engine side.
The copper pellet (the part with the temp on it opposite the spring end) should always go "into" the engine.
Your top hose of the radiator should go the thermostat housing. The bottom hose should go to the water pump housing.
Spring goes down towards the engine.Spring goes down towards the engine.
302 ÷ 42 = 7 with remainder 8 or 7.19 times.