1974 Duster

Finished the ring and pinion last weekend and it looks like we got a bad one. Install went fine, great pattern, car was silent running on the lift. Went for a road test and inside 5 miles was starting to make noise and by the time I made it back to the garage it was howling. Pulled the cover and found the backlash had gone from .008 to .012. Looks like the surface of the gear is actually coming apart like improper heat treat. Vendor states going to cover under warranty, will keep you posted with how that goes.