V-8 Engine Rebuild SBC #13 180 degrees off?

V-8 Engine Rebuild SBC #13 is your timing 180 degrees off, is the fifteenth video in a series on the full rebuild of the original 350 Chevrolet engine in my 1971 K-10 truck. This video covers how to decipher whether your timing is on or 180 degrees off?

Below are the addresses my YouTube channel which I no longer have access to, my Instagram page, HRI Services welding Facebook page, my Outdoor Pursuits Facebook page, and the Classic Chevy Parts page.
https://www.classicchevy.com/
https://www.doorcounty.com/
https://www.usa.canon.com/
https://www.youtube.com/@HRIservicesllcSturgeonBay
https://www.instagram.com/hri_services/
https://www.facebook.com/HRIServicesllc/
https://www.facebook.com/groups/218766029078898