I heated the last SFI dampener up on my shop wood heating stove to 130F and it tapped on real nicely, I did use Permatex brand silver antiseize on the crank snout and in the dampener hub so it will come off eaiser than without it. I'm sure some of us who have worked on stock BB Chevy have thought we would break the dang puller before getting those dampeners off Most Mopars are a breeze to remove compared to them turds