Another 416 Stroker Build-Pic Heavy

yellow rose said
Bullet point 3 is the deal killer for me.

ANY SFI damper is steel. Some are aluminum. None that I know of can get SFI approved if they are cast iron.

BUT-BUT you said that Tom Lieb the owner of Scat crankshafts says elastomer type dampener is JUNK. I'm confused. Help a fella out. J.Rob