Rear End

And yet they worked just fine in the 71+ B-bodies with 383/727's, even though that combo would weigh more, have more horsepower, and have a crap load more torque than that Scamp.

The 8.25" is more than capable of handling a sub-300hp 318 like the one you described. Either yours was in poor repair to begin with, or you abused the crap out of it. You can break anything if you try hard enough.

can only tell you what happened.... had a well built 904 with a rather mellow engine... was on the main drag in my town hit second under hard acceleration and bang sounded like a shotgun... limped to side and rear was in piece internally.... so yes it can happen and you say i abused the crap out of it... isnt that what street racing and drag racing does...? those many cycles of hard hits? good god.. lets remember thats what this sport is about to some of us.... gettting some power to the ground and if that doesnt abuse the rear then...