Welcome to the forum

4.0l OHV (Over head valve)
or
4.0l SOHC (single over head CAM)

Spark plugs need to be removed
Trans in Neutral

If 4.0l SOHC then timing chain problem could be locking engine from turning
Need to pull trans out with engine if that's the case, or pull off valve covers and check the front and rear chains

Why are you pulling out the engine?

 

 

And all spark plugs are out?
Starter motor is out?

What year Ranger, that will tell us what engine it is

Won't be a cracked block.

If 4.0l OHV, 1990-2000 Rangers will be cracked head, maybe both.

If 4.0l SOHC then probably not cracked head but crushed head gasket


You can pull just the engine with torque converter attached, it will come off/out of the trans, just be careful
Pull out radiator for clearance up front

 

Thats weird because I just put a wrench on the crank and it rotated all the way around to get each of the 4 nuts off the torque converter to flex plate? I didnt have to remove sparkplugs or anything.

 

Reads like you have no compression in the engine if crank was not hard to turn in certain places