Advice Needed - Can't Start Rebuilt 273

Hmm.Call me stupid but I always check for compression by plugging the spark plug hole with a thumb or finger and cranking the engine by hand until the pressure bleeds past my finger. It needs to be lots of pressure though.

I've used this method for years and it has always worked for finding TDC at any cylinder.

Then I pull the cap off the dissy and see where the rotor is pointing. It should be aiming for the intake bolt at the front left of the motor. If you check you cap and plug wires you will find this is where the #1 plug wire seats.

Keep it simple and dont panic. And stop working on the car after night shifts. Get some rest first and then approach it with a clear head.