I had to break loose a TTY cam bolt on an Intrepid 3.5L v6. I had a 3 or 4ft cheater on my breaker bar, and it was all my buddy and I could manage to break it loose. I thought for sure the bolt would shear or the drive would shear on my wrench, but thankfully neither failed. I swear that bolt must have been wound like a clock spring, before it loosened.
Been there done that. Three years at a dodge dealership. Bought a 1-7/16 wrench,stuck it in vise, heated it and bent it to hold cam. Nothing i hate more than damaging a new tool.
Ford cam phaser bolts too.