Seized Motor or Stuck _____?

[5280VertDET]

UPDATED: Trans dun frozed up real gud.


Fearing the worst here about a potential seized motor.
(notes below)

Is there anything else that can bind the engine to not spin by starter or by hand??

Also, I don't want to bend a rod, but I keep reading about these old timers CRANKing on the breaker bar to free it up, is that even a concern to bend a rod? (stock rebuild)

So, in the process of finishing my car and the SOB will not turn over. Just a thud/thunck when the starter turns. Replaced and test starter, all working 100%. It's a SR20DET Automatic trans, Verified the motor turns (via socket with trans in neutral) and its compression prior to dropping it in.

Prior to turning it over I wanted to pressure test the fuel system, a few leaks that I patched up, but never cranked it with fuel pressure. The fuel prime was about 5 weeks ago (in the process of moving to a new house and wanted to drive it over).

Now that everything fuel system-wise is sealed up tighter than Tebow's butthole, I cannot get it to crank over at all.

Tried hand cranking (CW) with a 2 ft breaker bar but it will not budge. the crank pulley bolt seems to tighten (even so slightly) so I pushed a bit more and nothing. No movement, nada.

Put some Marvels Mystery Oil in and tried again a day later and still NOTHING.That was 2 days ago.

My other concern is that something in the trans or a solenoid is stuck causing the motor to not turn, but it does shift to neutral and the tires can spin while in neutral. Also, I verified the motor turned in neutral prior to the drop anyway.