After the tear down, damage was found on #1 cylinder connecting rod bearing, and slight scoring on the journal that was polished out. The timing chain had over an inch of play, which more than likely caused havoc on timing. Valve seats had significant damage which most likely caused hot spots to develop, and led to detonation.
Everything was buttoned back up. The headers are just a cheap Hedman 289/302 model that had some ceramic paint thrown on it to cover up the rust to make for a nice picture. I planned on ditching the Holley 750 4160 for a 700 4150.