New engine, won't start

I have a 2001 Chevy Silverado 4.3L that I recently put a new engine in. The new engine will turn over but will not start. I am not getting any spark for some reason. The OBD2 code that keeps coming up says that the crankshaft position sensor is out of circuit. I have put in a new CKP sensor and new electrical connector, new spark plugs and wires, new distributor rotor and new ignition coil and still get the same OBD2 code and it won't start. Any suggestions??

I have a 2001 Chevy Silverado 4.3L that I recently put a new engine in. The new engine will turn over but will not start. I am not getting any spark for some reason. The OBD2 code that keeps coming up says that the crankshaft position sensor is out of circuit. I have put in a new CKP sensor and new electrical connector, new spark plugs and wires, new distributor rotor and new ignition coil and still get the same OBD2 code and it won't start. Any suggestions??

the crank sensor wiring or the crank sensor engine encoder wheel is messed up.

Check ground straps to engine block. A bad ground will cause this issue.