just make sure you bore a scope the hole first It sounds like a piston issue.
Good luck
Either way it doesn't matter I am not going learn anything I don't already know. The motor has to come apart anyway whether its a piston or a rod.
2012 Race Red GT w/ a 5 Liter and a 6 speed
2010 Dodge Challenger R/T traded in.
'03 DBS Cobra .... Traded in, THANK GOD
'01 Ford Lightning.... Sold, sorely missed