I was doing some research on old 55 chevy hotrods and I was wondering what made Olds rear ends so popular in them? I know the chevys from "Two Lane Blacktop" and "American Graffiti" had them, but what made them so popular?
I believe it was due to the housing or center section of the differential was beefier and stronger than other rearends to handle more HP and torque.
Had lower gearing for drag racing-
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