Is a 7.25 rear strong enough?

Dana67Dart said

7 1/4 came stock behind 273 2bbl.

Mine has 322,000 miles on it.

It will hold up just fine

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It’s good to know they will last if treated well. My 68 dart has a 360 in it and the rear end is quiet and seems fine. I drive it gently though,but I never beat on any of my cars.