I don't understand why you are asking us about anything when you have all these known problems that you haven't resolved.
The first thing you have to do is replace the battery and hope you haven't already damaged any electronics with all the power swings.
How about the basics when putting the engine together? Did you send the heads out to a machine shop foer testing and resurfacing. Did you get all the pushrods back in the correct positions? They are different for intake and exhaust.
After all those things are resolved, you replaced an ignition lock which means you now have to perform a Passlock security relearn procedure.
30 MINUTE LEARN PROCEDURE
Turn ON the ignition, with the engine OFF.
Attempt to start the engine, then release the key to ON (vehicle will not start).
Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the PASSLOCK Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).
IMPORTANT: The vehicle learns the PASSLOCK Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
Start the engine (the vehicle has now learned the PASSLOCK Sensor Data Code and/or password).
With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).
Sunday, September 21st, 2014 AT 5:18 AM