geterdun
+1y
I would say unusual, mounts even on high performance vehicles last many years. Were these new mounts? That said, they do break, new ones would sound like defective, maybe free replacement?
I do not see the torque of a 2200 breaking a mount without way more artillery on it than you have, if then.
GM I know in the '70's added an over the other half of mount kickup tab, to prevent the engine jumping more than a half inch when the rubber pad broke. That in and of itself would save the radiator on a close fit.