Engine locking up??

I assume you bolted a center sump pickup and oil pan on the motor. Might be time to have a look inside.

Yeah, I did that. Since you mention that, I just drained the oil back out. I was going to unbuckle the motor mounts, lift the engine and drop the steering to see if I can get the oil pan off. I'm still looking at it. I'm so far along that it may be easier just to lift the engine out.

If that's not the problem, I'm stumped!